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Objetivo: Presentar dos casos en que se empleó como soporte la circulación extracorpórea (CEC) durante cirugía por traumatismo torácico con lesión de grandes vasos del tórax (TTLGV). Materiales y método: Se presentan dos casos con TTLGV en que se empleó cirugía con CEC. Resultados: Caso 1; hombre de 31 años con TTLGV por cuerpo extraño (tubo pleural) intracavitario del tronco de la arteria pulmonar izquierda con entrada a través de parénquima pulmonar, en que se realizó cirugía abierta para retiro de cuerpo extraño más tractotomía pulmonar utilizando CEC como soporte. Caso 2; hombre de 21 años con TTLGV contuso y lesión de aorta en unión sino tubular, en que se realizó cirugía abierta y reemplazo de aorta ascendente con prótesis y uso CEC como soporte. Discusión: El uso de CEC como soporte es una alternativa para sustituir la función cardíaca y/o pulmonar durante cirugías excepcionales de reparación de TTLGV. Conclusión: El uso de técnicas de asistencia circulatoria como soporte durante la cirugía de reparación de TTLGV ocurre en casos muy seleccionados, siendo una alternativa ante lesiones particularmente complejas.

Resumen: Un hombre de 66 años portador de una prótesis valvular aórtica SJM Biocor® (Saint Jude Medical, St Paul, Minn), instalada 6 años antes, se presentó con disnea severa de rápida instalación. Mediante ecocardiografía de superficie y transesofágica se demostró insuficiencia aórtica masiva y el paciente fue reintervenido con éxito. En la operación se observó un desprendimiento parcial de la inserción del velo coronario izquierdo al anillo protésico. No había endocarditis. Se implantó una nueva prótesis biológica Trifecta® (Saint Jude Inc, St Paul, Minn) N°27. La evolución precoz y a 2 años de la intervención es muy satisfactoria.

A 49-year-old woman presented with dyspnea and palpitations, leading to Functional Class III.An echocardiogram showed a heterogeneous mass adhered to the right heart cavities. This was confirmed by NMR. A large right coronary artery was occluded in relation to the tumor, which was hyper vascularized. Resection of the tumor was performed; the right ventricular wall was sutured, and an atrial defect was closed using pericardial tissue. Post operative course was uneventful and she was asymptomatic 4 years after surgery.

A 20-year-old woman, without known pre-existent conditions presented with a history of dyspnea on exertion, and palpitations for 6 months. Vital signs, as well as cardiac and pulmonary examinations were normal. Routine blood tests were normal. The ECG showed nonspecific ST-T changes. The echocardiogram showed a left ventricle of normal size and function. A cystic image was shown in relation to the right ventricle, with displacement of the interventricular septum. These findings were confirmed on computed tomography. Additional cystic images on the liver or lungs were ruled out. On surgery, a cardiac hydatic cyst adhered to the pericardium next to the right ventricle was found. Puncture, drainage of the mass and surgical removal of cystic membranes were performed. The clinical course was uneventful. A four year follow up revealed no recurrence of the cyst.

Introducción: El traumatismo torácico (TT) es la causa de aproximadamente un cuarto de las muertes por traumatismos. Los pacientes tratados con cirugía por traumatismo torácico (CTT) presentan un amplio espectro de características y pronósticos.Objetivos: Describir características clínicas, indicaciones, temporalidad, morbilidad, mortalidad y las variables asociadas a mortalidad en pacientes con CTT.Materiales y métodos: Estudio observacional de pacientes tratados con CTT, período enero-1981 a diciembre-2019. Revisión de protocolos prospectivos de TT y base de datos. Se realizó regresión logística para variables asociadas a mortalidad. Se utilizó SPSS25® con prueba chi-cuadrado para comparar clasificación, tipo de TT y su distribución temporal, considerando significativo p

Introducción: Los traumatismos son una de las diez principales causas de muerte a nivel mundial y la primera en personas jóvenes. El traumatismo torácico (TT) es la segunda causa de muerte luego del traumatismo encefalocraneano. Objetivos: Analizar las variables asociadas a mortalidad, las causas principales y la distribución temporal de la mortalidad en hospitalizados fallecidos con TT.Material y método: Estudio observacional de hospitalizados con TT, período enero-1981 a diciembre-2018. Revisión de protocolos prospectivos de TT y base de datos. Se consignaron las causas de muerte sindromaticas principales y se realizó una regresión logística para variables asociadas a mortalidad. Se utilizó SPSS25® con pruebas chi-cuadrado para comparar clasificación, tipo de TT y su distribución temporal, considerando significativo p

Introduction: Penetrating cardiac trauma (PCT) constitute a permanent surgical challenge due to it characteristics and high mortality. Aim: To describe the findings, outcomes and prognostic factors in PCT. Materials and Method: Cross-sectional descriptive study, review of prospective thoracic trauma protocols and surgical registries. Period January 1990-December 2017. All patients with PCT were included. Various variables are described and analyzed. Univariate and multivariate analysis were performed to identify factors associated with morbidity, neurologic dysfunction and mortality. Results: 220 patients PCT, 209 (95.0%) men, mean age 30.4 ± 13.3, median 27 years. Mechanism: Aggression in 202 (91.8%). The traumatic agent was cold steel in 186 (84.4%) and fire arm in 21 (9.5%). 169 (76.8%) patients presented with tamponade, 103 (46.8%) shock and 20 (9.1%) cardiopulmonary arrest. Approach was sternotomy in 157 (71.4%), left thoracotomy in 58 (26.4%). The most common injured areas were right ventricle in 110 (50.0%), left ventricle in 72 (32.7%). 135 (61.4%) patients needed postoperative ICU and 74 (33.6%) were transfused. Complications occurred in 60 (27.3%). Twenty-one (9.5%) were reoperated. Mortality 28 (12.7%). The postoperative median stay was 6 days (Range 1-150). Prognostic factors were identified. Discussion: Operated PCT are more frequent in men with stab wound, the most common injured area is the right ventricle. The morbidity and mortality is comparable with international series.

Resumen Introducción: El traumatismo torácico (TT) es una causa importante de morbilidad y mortalidad, presente en el 25-50% de la mortalidad por traumatismo. El TT contuso (TTC) es el tipo más frecuente de TT según las diferentes publicaciones internacionales. Objetivo: Nuestros objetivos son describir las características, tratamientos, morbilidad y mortalidad en pacientes hospitalizados por TTC en nuestra institución. Material y Métodos: Estudio descriptivo transversal desde enero-1981 a diciembre-2017. Revisión de una base de datos prospectiva, protocolos quirúrgicos y fichas clínicas. Se describen y comparan las características de los TTC. Se calcularon índices de gravedad de traumatismo (IGT): Injury Severity Score (ISS), Revised Trauma Score (RTS-T), Trauma Injury Severity Score (TRISS). Resultados: Total 4.163 pacientes hospitalizados por TT, 1.719 (41,3%) TTC. Hombres 1.327 (77,2%), edad promedio 46,7±18,8 años. Se consideró TT aislado 966 (56,2%), asociado a lesiones extratorácicas 753 (43,8%) y de estos 508 (29,6%) eran politraumatizados. Mecanismo: Accidente de tránsito 838 (48,7%), caída de altura 279 (16,2%). Lesiones y hallazgos torácicos: fractura costal 1.294 (75,3%), neumotórax 752 (43,1%). Tratamiento: médico 874 (50,8%), pleurotomía 704 (41%) y cirugía torácica 141 (8,2%). Período de hospitalización 9,2 ± 9,5 días. Según IGT: ISS promedio 14,1 ± 11,1, RTS-Tpromedio 11,5 ± 1,5, TRISS promedio 6,6. Morbilidad en 297 (17,3%), mortalidad en 68 (4%). Discusión: La causa principal de los TTC fue el accidente de tránsito. La fractura costal correspondió a la lesión torácica más frecuente. La mayoría requirió solo tratamiento médico. La mortalidad fue menor a la esperada según IGT.

Introduction : Cardiac hydatid cyst is a rare disease caused by Echinococcus granulosus arrival of the coronary circulation. Materials and Method : 52 years old man with a history of cardiac hydatid cyst operated 27 years ago, heart failure and coronary artery disease. He presented with a history of one year of progressive dyspnoea. Study with chest radiography, echocardiography and computed tomography showed an image compatible with cardiac hydatid disease recurrence in relation to the left ventricle, pulmonary artery and anterior descending artery. Ejection fraction of the left ventricle was approximately 30%. No evidence of extracardiac hydatid disease was found and surgical treatment was decided. Addressed by median sternotomy and extracorporeal circulation, a multiloculated myocardial hydatid cyst, with hundreds of daughter vesicles of different size was found. Pericystectomy of the hydatid cyst was performed without incident. The patient presented postoperative bleeding which required early reoperation. Posteriorly, was discharged without complications. Discussion: Hydatid disease is an endemic zoonosis in Chile. Heart location is infrecuent and correspond to 0.5 to 2% of the cases, usually associated with the presence of extracardiac cysts. The most common location is the free wall of the left ventricle at intramyocardial level. Medical treatment is often inadequate and surgical resection is recommended.

Prosthetic valve replacement is the standard treatment for aortic valvulopathy. Due to the structural valve deterioration of biological prosthesis and the anticoagulation requirements of mechanical valves, the repair of aortic valve disease is receiving more attention in recent years. The Ozaki technique consists in the reconstruction of a trileaflet valve using autologous pericardium. We report our first two cases of successful reconstruction of the aortic valve using this technique with 12-month echocardiographic and 24-month clinical follow up.

Introducción: El traumatismo penetrante cardíaco (TPC) es una lesión poco frecuente y con alta morbilidad y mortalidad.Objetivo: Analizar la evolución de características clínicas, anatómicas, gravedad, morbilidad y mortalidad de pacientes operados por TPC.Materiales y Método: Estudio analítico de pacientes tratados quirúrgicamente por TPC en Hospital Clínico Regional “Dr. Guillermo Grant Benavente”, Concepción, Chile. Se analizaron los periodos: enero-1990 a diciembre-2004 y enero-2005 a diciembre-2019. Se comparó: sexo, edad, lesiones asociadas, agente y mecanismo del traumatismo, comportamiento fisiopatológico, ubicación anatómica de la lesión, clasificaciones del traumatismo cardíaco Attar, Saadia y OIS-AAST, IGT (índices de gravedad del traumatismo): ISS, RTS-T y TRISS, morbilidad y mortalidad según periodos. Se realizó análisis estadístico con SPSS25®, se utilizaron las pruebas chi-cuadrado, exacta de Fisher y Mann-Whitney. Se consideró significativo un valor p

Introducción: El traumatismo es la primera causa de muerte en adolescentes y la quinta en el adulto mayor. El traumatismo torácico (TT) posee características particulares en diferentes grupos de edad.Objetivo: Analizar características clínicas, índice de gravedad de traumatismo (IGT) y mortalidad en hospitalizados por TT según grupo etario.Materiales y Método: Estudio analítico de hospitalizaciones por TT, período enero-1981 a diciembre-2018. Revisión de protocolos prospectivos de TT y base de datos. Se definió grupo etario según Organización Mundial de la Salud (Adolescente: 10-19 años; Adulto Joven: 20-44 años; Adulto Maduro 45-59 años; Adulto Mayor: >60 años). Se comparó clasificación, mecanismo, agente, tratamiento, IGT, Trauma Injury Severity Score (TRISS) y mortalidad del TT según grupo etario. Se utilizó SPSS25® con pruebas chi-cuadrado y ANOVA, considerando significativo p

Introducción: El secuestro pulmonar (SP) es una malformación congénita caracterizada por tejido pulmonar con vascularización de una arteria sistémica anómala. Objetivo: Analizar las características y tratamiento de pacientes adultos y pediátricos con secuestro pulmonar. Materiales y Métodos: Estudio analítico longitudinal. Periodo: enero-1988 a diciembre-2018. Información de fichas clínicas y registros de anatomía patológica. Se describen edad, sexo, características clínicas, diagnóstico, tratamiento quirúrgico y hallazgos anatomopatológicos. Se realizó análisis estadístico mediante SPSS25 y se usó la prueba U de Mann-Whitney y Chi cuadrado, considerándose significativo p

EuroSCORE II is a mortality risk score for cardiac surgery in adults. This version is widely validated and compared with other scores in Europe, North America, and Asia.To determine the performance of the EuroSCORE II for the prediction of mortality in cardiac surgeries in Latin America.A systematic review was carried out of studies from Latin American countries evaluating the performance of EuroSCORE II in cardiac surgery. The inclusion criteria were patients older than 18 years, from Latin America, published in English, Spanish and/or Portuguese, between the years 2012 to 2020, with the term "EuroSCORE II" in the title. Observed mortality and estimated mortality data by EuroSCORE II were extracted. The calibration was determined by the observed/estimated mortality ratio and the discrimination was evaluated using receiver operating characteristic (ROC) curves.Four articles met the inclusion criteria, including 8372 patients. The average patients' age was 62 years and 34% were women. The observed and Euroscore II estimated mortality figures were 7.08 and 3.89%, respectively. The average area under the curve of ROC curves was 0.77 and the observed/ estimated mortality ratio was 2.04.In these studies, EuroSCORE II underestimated mortality in cardiac surgery.

Resumen: Objetivo: Describir las características clínicas, resultados operatorios inmediatos y a 5 años de la cirugía de reparación valvular mitral. Material y métodos: Estudio retrospectivo de la cohorte de pacientes operados de reparación valvular por insuficiencia mitral (IM) en el Hospital Guillermo Grant Benavente desde el 2009 hasta marzo 2020 (N=206). Se comparan los pacientes con IM primaria y secundaria en sus características clínicas, ecocardiográficas, técnicas quirúrgicas empleadas, cirugías asociadas, morbimortalidad operatoria, sobrevida y reintervenciones hasta el 30 de mayo de 2020. Resultados: 124(60,2%) hombres. Edad media 62,6±10,5 años. La IM fue primaria en 134 y secundaria en 72. En comparación con los pacientes portadores de IM primaria, aquellos con IM secundaria tuvieron más enfermedad coronaria (69,4% versus 11,9%; p

Resumen Introducción: El hemotórax masivo (HM) se puede definir como el acúmulo súbito de ≥ 1.500 ml de sangre en la cavidad pleural o débito ≥ 200 ml/h de sangre en 3-4 h por pleurotomía; es considerada una complicación traumática grave. Objetivo: Describir las características clínicas, índices de gravedad de traumatismo (IGT), morbilidad y variables asociadas a mortalidad en pacientes con hemotórax masivo por traumatismo torácico operados (HMTT). Materiales y Método: Estudio analítico longitudinal. Período enero de 1981 a diciembre de 2018. Revisión prospectiva de base de datos, protocolos quirúrgicos y fichas clínicas. Descripción de características de HMTT. Se calcularon IGT: Injury Severity Score (ISS), Revised Trauma Score (RTS-T), Trauma Injury Severity Score (TRISS). Para mortalidad se realizó análisis univariado con cálculo de Odds Ratio. Resultados: Total 4.306 traumatismos torácicos (TT), HMTT 119 (2,8%). Hombres 112 (94,1%), edad promedio 32 ± 13,2 años, 91 (76,5%) pacientes presentaron TT aislado, 28 (23,5%) asociado a lesiones extratorácicas, de estos, 23 (19,3%) fueron politraumatismos. Fueron traumatismos penetrantes 102 (85,7%). El HMTT se atribuyó principalmente a: lesión de pared en 38 (31,9%) y lesión pulmonar en 29 (24,4%). De las cirugías torácicas: 87 (73,1%) fueron urgentes (≤ 4 h), 10 (8,4%) precoces (> 4-24 h) y 22 (18,5%) diferidas (> 24 h). Hospitalización postoperatoria promedio 7,9 ± 6,4 días. Según IGT: ISS promedio 17,4 ± 9,6, RTS-T promedio 10,2 ± 2,7, TRISS promedio 12,7. Morbilidad 46 (38,7%) y mortalidad 15 (12,6%). Discusión: Los HMTT se atribuyeron principalmente a lesiones de pared y lesión pulmonar. En la mayoría se requirió cirugía torácica de urgencia. La mortalidad observada es semejante a la esperada según IGT. Existen variables asociadas a mayor mortalidad.

Resumen: Objetivo: Describir los resultados inmediatos y alejados de la cirugía coronaria sin circulación extracorpórea (CEC) y comparar los resultados de la estrategia de indicación de la técnica en dos períodos. Pacientes y Métodos: Estudio retrospectivo de 428 pacientes intervenidos de cirugía coronaria sin CEC entre 2004 y 2019 en el Hospital Guillermo Grant Benavente. Se dividen en Grupo 1, período 2004-2008 (N=216) y Grupo 2, período 2009-2019 (N=212). Se estudiaron sus características clínicas, resultados quirúrgicos, morbi-mortalidad operatoria y eventos adversos al 31 de junio de 2019 y se compararon los resultados de los grupos a 5 años. Resultados: No hubo diferencias en la distribución por sexo, edad, factores de riesgo y patologías asociadas entre los grupos. Hubo diferencias en las lesiones coronarias entre los Grupos 1 y 2: lesión de un vaso en 45 (20,4%) versus 125 (59%) y tres vasos en 75 (34,5%) versus 19 (9%) respectivamente (p

Resumen Introducción: Los traumatismos torácicos por armas de fuego (TTAF) son cada vez más frecuentes. Objetivos: Describir características clínicas, morbilidad, mortalidad y la evolución a través del tiempo de hospitalizados por TTAF. Materiales y Método: Estudio analítico longitudinal. Período enero de 1981-diciembre de 2018. Revisión base de datos, protocolos prospectivos y fichas clínicas. Se utilizó planilla Microsoft Excel® y programa SPSS24® con chi cuadrado y de Mann-Whitney. Descripción de características de TTAF en pacientes hospitalizados y comparación por períodos. Se calcularon índices de gravedad del traumatismo (IGT): Injury Severity Score (ISS), Revised Trauma Score (RTS-T), Trauma Injury Severity Score (TRISS). Resultados: Total 4.306 pacientes hospitalizados por traumatismo torácico (TT), 205 (4,8%) hospitalizados por TTAF. Hombres: 188 (91,7%), edad promedio 28,8 ± 11,2 años, TTAF aislado 115 (56,1%), asociado a lesiones extratorácicas 90 (43,9%), de estos 55 (26,8%) se consideraron politraumatismos. Mecanismo: Agresión 193 (94,1%), autoagresión 11 (5,4%) y accidental 1 (0,5%). Lesiones y/o hallazgos torácicos más frecuentes: Hemotórax 127 (62,0%), neumotórax 96 (46,8%) y contusión pulmonar 51 (24,9%). Tratamiento definitivo: Pleurotomía 88 (42,9%), cirugía 71 (34,6%) y tratamiento médico 46 (22,4%). Mediana de hospitalización 7 días. Según IGT: ISS promedio 16,7 ± 11,7, RTS-T promedio 11,1 ± 2,1, TRISS promedio 9,6. Morbilidad: 44 (21,5%). Mortalidad: 14 (6,8%). En los diferentes períodos, se observó aumento de politraumatismos y TRISS, sin cambios en mortalidad. Discusión: La mayoría de los TTAF fueron aislados. Aproximadamente un tercio de los pacientes requirió cirugía. La mortalidad observada es menor a la esperada. Se observan cambios en los TTAF a través del tiempo.

Background Lungs are the second location in frequency of hydatidosis or cystic echinococcosis. Aim To characterize the clinical manifestations, diagnosis, findings and treatment of patients hospitalized for a pulmonary hydatid cyst (PHC). Materials and methods Review of databases, medical records, operation notes and death certificates of patients admitted to a Chilean regional hospital with a PHC. Results Four hundred twenty-nine cases were identified and complete data was obtained from 368 patients aged 34 ± 19 years, 224 (60,9%)men. The most common clinical manifestations were cough in 269 (73%) and chest pain in 217 (59%). The most frequent locations were the right lung in 210 (57%) and lower lobes in 218 (59%). One hundred eighty-seven cysts (51%) were complicated. Conservative surgery (cystectomy) was performed in 308 (84%). Postoperative morbidity was observed in 77 (21%) and mortality in 6 (2%) patients. Recurrence was observed in 28 (8%) patients. There was a significant reduction in morbidity, mortality, reoperations, and postoperative days over time. Conclusions In these patients, pulmonary hydatidosis was diagnosed mainly during working ages and half of patients had a complicated cyst.

Resumen Introducción: El doble arco aórtico (DAA) es una malformación cardiovascular infrecuente caracterizada por la persistencia de ambos arcos aórticos posterior al nacimiento. Puede presentarse con rama derecha dominante (70-73%), izquierda o simétrica. Su forma anatómica produce compresión de estructuras mediastínicas como la tráquea y esófago. Caso clínico: Lactante menor hombre de 3 meses, con antecedente de estridor desde nacimiento. Ingresó a nuestro centro por neumonía grave con necesidad de ventilación mecánica prolongada. Evaluado por otorrinolaringología, se realizó revisión de vía aérea, observando estenosis en los últimos 5 anillos traqueales con colapso dinámico de la tráquea. La tomografía computada de tórax demostró DAA completo con emergencias de troncos supraaórticos de ambos arcos de forma simétrica. Se decidió tratamiento quirúrgico a la brevedad. Se abordó por toracotomía anterolateral izquierda, se realizó control vascular y sección del arco aórtico izquierdo distal a emergencia de subclavia, con plastía de aorta y arteria subclavia izquierda, liberado el arco aórtico se realizó pexia y disección de tejido fibrótico que rodeaba tráquea y esófago. Paciente evolucionó favorablemente, con resolución de cuadro respiratorio y ausencia estridor. Fibrobroncoscopía posoperatoria no observó compresión traqueal. El alta hospitalaria fue al 14° día posoperatorio. Actualmente, a seis meses de seguimiento, se encuentra asintomático respiratorio y cardiovascular. Discusión: El DAA puede afectar al 0,03% de la población pediátrica. Usualmente es sintomático con manifestaciones obstructivas como estridor o disfagia por compresión de estructuras mediastínicas, por lo que requiere alta sospecha clínica para su confirmación imagenológica y posterior tratamiento quirúrgico.

Embolic stroke secondary to cardiac tumors is uncommon. However, 25-30% of cardiac tumors may cause systemic emboli. We report a 29-year-old male consulting for a sudden episode of aphasia and right hemiparesis, compatible with infarct of the left middle cerebral artery territory. Transthoracic echocardiography reported an ovoid tumor of 8 × 7 × 7 mm in relation to the sub valvular apparatus of the mitral valve. After neurologic stabilization, surgical treatment was performed. Approached by median sternotomy and in cardiopulmonary bypass, the mitral valve was explored. A macroscopic tumor consistent with a papillary fibroelastoma curled in sub valvular chordae was found. It was deployed and resected from its base, while the anterior mitral leaflet was preserved intact. Histopathological examination confirmed the intraoperative macroscopic diagnosis. The patient recovered uneventfully postoperatively and was discharged on the fifth day after surgery. He currently is in functional capacity I without cardiovascular symptoms at five years follow-up.

Introducción: Los traumatismos constituyen la quinta causa de muerte en el adulto mayor (60 años o más), siendo los traumatismos contusos los más frecuentes.Objetivo: Describir características, índices de gravedad de traumatismo (IGT), morbilidad y mortalidad en adultos mayores (AM) hospitalizados con traumatismo torácico (TT).Material y Método: Estudio descriptivo transversal. Período desde enero de 1981 a diciembre de 2017. Revisión base de datos, protocolos quirúrgicos y fichas clínicas. Descripción de características de TT en AM hospitalizados. Se calculó IGT: Injury Severity Score (ISS), Revised Trauma Score (RTS-T), Trauma Injury Severity Score (TRISS).Resultados: Total 4.163 TT, AM 513 (12,3%). Hombres: 350 (68,2%), edad promedio 71,2 ± 8,4 años, mediana 70 (rango: 60-103), TT aislado 350 (68,2%), asociado a lesiones extratorácicas 163 (31,8%) y de estos 96 (18,7%) se consideraron politraumatismos. Traumatismo contuso 456 (88,9%) y penetrante 57 (11,1%). La causa más frecuente fueron las caídas en 252 (49,1%). Lesiones y/o hallazgos torácicos más frecuentes: fracturas costales 409 (79,7%), hemotórax 186 (36,3%) y neumotórax 185 (36,1%). Tratamiento definitivo: médico 287 (55,9%), pleurotomía 193 (37,6%) y cirugía 40 (7,8%). Cirugía extratorácica 33 (6,4%). Hospitalización promedio 9,0 ± 8,8 días. Según IGT: ISS promedio 12,1 ± 9,6, RTS-T promedio 11,6 ± 1,3, TRISS promedio 8,1. Morbilidad 76 (14,8%) y mortalidad 26 (5,1%).Discusión: La mayoría de los TT en AM son contusos, causados por accidentes domésticos. Las lesiones y hallazgos más frecuentes fueron fracturas costales y hemotórax. La mortalidad fue menor a la esperada según IGT.

Background: Primary cardiac tumors have a low incidence, and their presentation form and clinical course are not well known. Aim: To describe the characteristics, treatment, follow up and survival of patients with primary cardiac tumors (PCT). Material and Methods: Review of all surgical procedures for PCT performed between 1984 and 2019 in a regional general hospital. The information was obtained from surgical protocols, surgical and pathology databases, medical records and registries of the Chilean National Identification Service. The clinical features of patients, immediate and long term outcomes are described. Results: Seventy-two surgical procedures for PCT were reviewed. Patients’ age was 55 ± 15 years and 60% were women. The most common histological types were myxoma in 49 patients (68%), papillary fibroelastoma in 13 (18%) and sarcoma in 6 (8.3%). Forty-nine (68.1%) were symptomatic and all tumors were found on echocardiography. Fifty-one (71%) were in the left atrium, 10 (14%) in the aortic valve and eight (11%) in the right atrium. The surgical procedures were tumor resection in 48 patients (67%) and resection and repair with patch in 23 (32%). Mean postoperative stay was 6.6 ± 4.4 days, eight patients (11%) had complications and no patient died in the immediate postoperative period. Long term survival was higher in patients with benign PCT as compared with those with malignant tumors. Conclusions: Most PCTs in this group of patients were benign neoplasms and the most common tumors were myxomas. The main diagnostic method is echocardiography and the prognosis of surgical treatment is excellent when the tumors are benign. (Rev Med Chile 2020; 148: 327-335)

Lungs are the second location in frequency of hydatidosis or cystic echinococcosis.To characterize the clinical manifestations, diagnosis, findings and treatment of patients hospitalized for a pulmonary hydatid cyst (PHC).Review of databases, medical records, operation notes and death certificates of patients admitted to a Chilean regional hospital with a PHC.Four hundred twenty-nine cases were identified and complete data was obtained from 368 patients aged 34 ± 19 years, 224 (60,9%)men. The most common clinical manifestations were cough in 269 (73%) and chest pain in 217 (59%). The most frequent locations were the right lung in 210 (57%) and lower lobes in 218 (59%). One hundred eighty-seven cysts (51%) were complicated. Conservative surgery (cystectomy) was performed in 308 (84%). Postoperative morbidity was observed in 77 (21%) and mortality in 6 (2%) patients. Recurrence was observed in 28 (8%) patients. There was a significant reduction in morbidity, mortality, reoperations, and postoperative days over time.In these patients, pulmonary hydatidosis was diagnosed mainly during working ages and half of patients had a complicated cyst.

Background Exclusive coronary revascularization with both mammary arteries could result in lower rates of adverse events in the long term. Aim To describe the five-year evolution of a cohort of patients operated on with this technique. Material and methods Follow up analyzing survival of 73 patients aged 59 ± 9 years (82% men) who underwent exclusive coronary surgery with two mammary arteries between December 1,2010 and April 12,2017. We studied their clinical characteristics, surgical results, operative morbidity and mortality and adverse events up to June 30, 2018. Results Six patients had two-vessel lesions and 67 three-vessel lesions. The operative risk calculated by additive and logistic EuroSCORE was 2.5 and 2.3%, respectively. A mean of 3.75 anastomoses /patient were performed, 116 with left mammary artery (73 to the anterior descending artery, 38 to a diagonal artery and 5 for other objectives) and 158 with right mammary artery (69 to a first marginal artery, 23 to a second marginal artery and 64 to posterior descending artery). There was one case of mediastinitis and one (1.5%) patient died. The mean follow-up was 64.6 ± 23.7 months. The 5-year survival was 90.4%. Conclusions Coronary revascularization with two exclusive mammary arteries allowed a complete revascularization of the heart with a low rate of complications and adverse effects at five years.

Exclusive coronary revascularization with both mammary arteries could result in lower rates of adverse events in the long term.To describe the five-year evolution of a cohort of patients operated on with this technique.Follow up analyzing survival of 73 patients aged 59 ± 9 years (82% men) who underwent exclusive coronary surgery with two mammary arteries between December 1,2010 and April 12,2017. We studied their clinical characteristics, surgical results, operative morbidity and mortality and adverse events up to June 30, 2018.Six patients had two-vessel lesions and 67 three-vessel lesions. The operative risk calculated by additive and logistic EuroSCORE was 2.5 and 2.3%, respectively. A mean of 3.75 anastomoses /patient were performed, 116 with left mammary artery (73 to the anterior descending artery, 38 to a diagonal artery and 5 for other objectives) and 158 with right mammary artery (69 to a first marginal artery, 23 to a second marginal artery and 64 to posterior descending artery). There was one case of mediastinitis and one (1.5%) patient died. The mean follow-up was 64.6 ± 23.7 months. The 5-year survival was 90.4%.Coronary revascularization with two exclusive mammary arteries allowed a complete revascularization of the heart with a low rate of complications and adverse effects at five years.

Background: Coronary artery bypass grafting (CABG) is the best treatment for a large group of patients with coronary artery disease. Aim: To describe early and late results of patients treated with CABG at our Center. Patients and Methods: Revision of data bases, surgical protocols and clinical registers of patients operated between January 2006 and December 2008. Results: Of 1.003 cardiac surgeries performed during the period, 658 corresponded to isolated CABG (78% in men). The median age of patients was 62 years. Left common coronary artery lesions was found in 135 cases (20%), 555 patients (84%) had hypertension and 231 (35%) were diabetics. Four-hundred thirty (65%) had stable angina and 211 (32%) had a recent myocardial infarction. Twenty-two had left ventricular ejection fraction < 30%. In 248 (38%), a low Additive EuroSCORE risk was found. Emergency surgery was required in 36 (6%) patients. Use of extracorporeal circulation was required in 466 patients (71%). Within 30 days of surgery, complications were recorded in 105 patients (16%) (15 (2%) stroke, 14 (2%) myocardial infarction, 7 (1%) mediastinitis, and in 14 (2%) a reoperation for bleeding). Thirteen patients died (2%). Among the 303 patients with stable angina and preserved left ventricular function, two died (0,7%). Survival at 1, 3 and 5 years was 97,4%, 93,8% y 90,9% respectively. Major adverse cardiac and cerebrovascular events at five years occurred in 20%, stroke in 4%, myocardial infarction in 3% and reintervention in 2%. Seven percent of patients had recurrence of angina. Conclusions: We describe a heterogeneous series of patients. The immediate and late results are comparable with international communications.

Embolic stroke secondary to cardiac tumors is uncommon. However, 25-30% of cardiac tumors may cause systemic emboli. We report a 29-year-old male consulting for a sudden episode of aphasia and right hemiparesis, compatible with infarct of the left middle cerebral artery territory. Transthoracic echocardiography reported an ovoid tumor of 8 × 7 × 7 mm in relation to the sub valvular apparatus of the mitral valve. After neurologic stabilization, surgical treatment was performed. Approached by median sternotomy and in cardiopulmonary bypass, the mitral valve was explored. A macroscopic tumor consistent with a papillary fibroelastoma curled in sub valvular chordae was found. It was deployed and resected from its base, while the anterior mitral leaflet was preserved intact. Histopathological examination confirmed the intraoperative macroscopic diagnosis. The patient recovered uneventfully postoperatively and was discharged on the fifth day after surgery. He currently is in functional capacity I without cardiovascular symptoms at five years follow-up.

Coronary artery bypass grafting (CABG) is the best treatment for a large group of patients with coronary artery disease.To describe early and late results of patients treated with CABG at our Center.Revision of data bases, surgical protocols and clinical registers of patients operated between January 2006 and December 2008.Of 1.003 cardiac surgeries performed during the period, 658 corresponded to isolated CABG (78% in men). The median age of patients was 62 years. Left common coronary artery lesions was found in 135 cases (20%), 555 patients (84%) had hypertension and 231 (35%) were diabetics. Four-hundred thirty (65%) had stable angina and 211 (32%) had a recent myocardial infarction. Twenty-two had left ventricular ejection fraction30%. In 248 (38%), a low Additive EuroSCORE risk was found. Emergency surgery was required in 36 (6%) patients. Use of extracorporeal circulation was required in 466 patients (71%). Within 30 days of surgery, complications were recorded in 105 patients (16%) (15 (2%) stroke, 14 (2%) myocardial infarction, 7 (1%) mediastinitis, and in 14 (2%) a reoperation for bleeding). Thirteen patients died (2%). Among the 303 patients with stable angina and preserved left ventricular function, two died (0,7%). Survival at 1, 3 and 5 years was 97,4%, 93,8% y 90,9% respectively. Major adverse cardiac and cerebrovascular events at five years occurred in 20%, stroke in 4%, myocardial infarction in 3% and reintervention in 2%. Seven percent of patients had recurrence of angina.We describe a heterogeneous series of patients. The immediate and late results are comparable with international communications.

Background: Thymectomy improves clinical outcomes and decreases the need for medical treatment in patients with myasthenia gravis (MG). Aim: To describe the immediate and long-term results of extended transsternal thymectomy (ETT) in patients with MG. Material and Methods: A review of databases, surgical protocols, clinical records and interviews of patients subjected to extended transsternal thymectomy for MG between 1990 and 2016. Perioperative clinical characteristics, anticholinesterase treatment, immediate and remote surgical results were analyzed and patients were followed from one to 10years. Results: We studied 58 patients aged 35 ± 14years (72%) women. In the preoperative period, according to Osserman classification, nine patients (15,5%) were in grade I, eight (13,8%) in grade IIA 8 and 40 (69%) in grade IIB. The pathological study of the surgical piece showed thymic hyperplasia in 39 cases (67,2%). Four patients had postoperative complications but none died. In the Follow-up at 1, 3, 5, 8 and 10years the Masaoka palliation rate was 71.7, 77.5, 67.7, 70.0 and 70,6% respectively. The figures for remission rate were 13.0, 15.0,19.4, 35.0 and 35,3% respectively. The figures for Zielinski positive results were 79.6, 87.5, 87.1, 90.0 and 82,4% respectively. The DeFilippi score improved by 80.4, 87.5, 87.1, 90.0 and 82.4% respectively. The Myasthenia Gravis Foundation of America Post-Intervention State improved by 67.4, 77.5, 77.5, 75.0 and 70,6% respectively. Mean Myasthenia Gravis Activities of daily living (MGADL) and Myasthenia Gravis Quality of life scale 15 (MGQOL 15) were 1.65 and 6.31 respectively. Conclusions: In selected patients with MG, extended transsternal thymectomy in MG has good immediate and long-term results.

De acuerdo a la ciencia de la ocupación y la justicia ocupacional, la participación e inclusión en ocupaciones significativas, resulta fundamental para el desarrollo de las personas y de las comunidades, sin embargo, esta inclusión no siempre se ve favorecida en todos los espacios públicos. El ámbito de la educación ha desarrollado un avance importante en esta materia principalmente en sus niveles primarios, potenciando proyectos como el de integración escolar, con lo cual se ha dado espacio a alumnos en situación de discapacidad. Estos proyectos no se han incorporado a la educación superior, por lo cual los alumnos deben crear sus propias estrategias para la inclusión ya que los ambientes tanto físicos como sociales no siempre están preparados para responder a las necesidades particulares de los alumnos con distintas discapacidades y otorgar un real y equitativo acceso a la educación. Esta investigación busca obtener mayores antecedentes acerca de los procesos de inclusión y adaptación de un grupo de jóvenes con discapacidad en la Universidad de Magallanes, con el fin de aportar de manera concreta a estas políticas. Para esto, se utilizó la metodología cualitativa, considerando la experiencia de 15 estudiantes, de diversas carreras y con distinto tipo de discapacidad. Dentro del estudio, aparecen como relevantes los facilitadores vinculados al entorno, referente a ayudas técnicas, familia y red social, y por otra parte, las características personales de los estudiantes, como por ejemplo la capacidad de resiliencia que les permite sobreponerse y responder con estrategias personales a los desafíos y barreras existentes. Por lo anterior, aparecen necesidades que invitan a potenciar el cambio de paradigma de la inclusión en el ámbito educativo, que contemple un equilibrio real entre considerar los requerimientos especiales para la equidad y a su vez fomentar el trato igualitario que promueva la dignidad de las personas con discapacidad.

Background: Trauma is the leading cause of death in young patients and thoracic trauma (TT) is responsible for 25-35% of trauma deaths. Aim: To describe and compare features, trauma severity indexes and morbidity of patients admitted for TT in the past three decades. Material and Methods: Review of a TT database, operative notes and medical records of patients. These were separated by decade of admission (1981-1990, 1991-2000, 2001-2010). TT characteristics were compared. Injury Severity Score (ISS), Revised Trauma Score (RTS-T) and Trauma Injury Severity Score (TRISS) were calculated. Results: A total of 3,068 TT were reviewed. In the 1981-1990 period, 604 cases of TT were registered (19.7%), in the 1991-2000 period, 1,070 cases (34.9%) and in the 2001-2010 period, 1,394 cases (45.4%) (p < 0.05). The ages of patients in each of these periods were 34.9 ± 15.5, 33.9 ± 16.2 and 35.7 ± 18.2 years respectively (p < 0.05). The proportion of patients aged 65 years or more were 6.6, 7.7 and 10.1% respectively, the proportion of females was 6.1, 9.4 and 12.0%, respectively. The causing agents per decade were knife wounds in 51.5, 61.1 and 60.0% of cases respectively, firearms in 2.5, 3.3 and 5.0% of cases respectively, multiple trauma in 13.9, 14.5 and 9.0% respectively and morbidity in 18.7, 19.7 and 11.7%, respectively. The ISS per decade was 11.9 ± 6.5, 12.9 ± 6.9 and 10.4 ± 6.8 respectively. No significant difference were found in mortality (1.5, 3.0, 2.0% respectively) or TRISS score (2.7, 3.2 and 3.8% respectively). Conclusions: An increase in the number of hospital admission for TT has occurred in the last three decades, with an increase in the proportion of admissions of subjects aged 65 years or more, females and with firearm injuries.

La cirugía de la aorta ascendente y cayado con circulación extra corpórea requiere de una canulación arterial que permita asegurar una perfusión sistémica adecuada y disminuir las complicaciones neurológicas. El sitio ideal de canulación es aún un tema de discusión entre los cirujanos. Entre las alternativas de abordaje están la canulación periférica (arteria femoral), la canulación central extratorácica (arterias axilar, subclavia o carótidas) y la canulación central intratorácica (aorta, arteria innominada). La canulación de la arteria innominada es una técnica que se puede realizar sin necesidad de una segunda incisión, es un vaso de fácil abordaje y habitualmente de gran calibre. Permite entregar un flujo cerebral y visceral anterógrado y, en caso de cirugía sobre el cayado, el pinzamiento de la arteria a nivel de su origen permite entregar una perfusión cerebral selectiva anterógrada. Se describen la técnica quirúrgica y los reparos operatorios que nos parecen importantes en su realización.

Penetrating aortic ulcer (PAU) is an ulceration of an atherosclerotic plaque which disrupts the aortic internal elastic lamina and that can evolve to an intramural hematoma (IH), aortic dissection or aortic rupture. We report two cases with PAU. A 73-years-old-woman with a history of hypertension, presented with acute chest pain of three days of evolution and a hypertensive emergency. An electrocardiogram showed ST-segment elevation and elevated cardiac enzymes. Computed tomography (CT) scans showed and acute ascending aortic mural hematoma secondary to PAU and hemopericardium. Replacement of ascending aorta was performed with a vascular prosthesis with extracorporeal circulation (ECC). PAU and IH were confirmed by histopathology. A 62-years-old woman with a history of hypertension, diabetes and chronic obstructive pulmonary disease, consulted for abdominal pain of two days of evolution. A thoracic-abdominal CT scan visualized an uncomplicated PAU and an abdominal aortic aneurysm. Because of abdominal pain and signs of peritoneal irritation, an exploratory laparotomy was performed finding a typhlitis. Resection and ileo-ascendo-anastomosis were performed. A new CT scan showed PAU with high risk of rupture without a clinical acute aortic syndrome. The patient was operated replacing the ascending aorta with a vascular prosthesis using ECC. Three PAU were found. Histopathology confirmed the diagnosis. Both patients evolved without postoperative complications.

Thymectomy improves clinical outcomes and decreases the need for medical treatment in patients with myasthenia gravis (MG).To describe the immediate and long-term results of extended transsternal thymectomy (ETT) in patients with MG.A review of databases, surgical protocols, clinical records and interviews of patients subjected to extended transsternal thymectomy for MG between 1990 and 2016. Perioperative clinical characteristics, anticholinesterase treatment, immediate and remote surgical results were analyzed and patients were followed from one to 10years.We studied 58 patients aged 35 ± 14years (72%) women. In the preoperative period, according to Osserman classification, nine patients (15,5%) were in grade I, eight (13,8%) in grade IIA 8 and 40 (69%) in grade IIB. The pathological study of the surgical piece showed thymic hyperplasia in 39 cases (67,2%). Four patients had postoperative complications but none died. In the Follow-up at 1, 3, 5, 8 and 10years the Masaoka palliation rate was 71.7, 77.5, 67.7, 70.0 and 70,6% respectively. The figures for remission rate were 13.0, 15.0,19.4, 35.0 and 35,3% respectively. The figures for Zielinski positive results were 79.6, 87.5, 87.1, 90.0 and 82,4% respectively. The DeFilippi score improved by 80.4, 87.5, 87.1, 90.0 and 82.4% respectively. The Myasthenia Gravis Foundation of America Post-Intervention State improved by 67.4, 77.5, 77.5, 75.0 and 70,6% respectively. Mean Myasthenia Gravis Activities of daily living (MGADL) and Myasthenia Gravis Quality of life scale 15 (MGQOL 15) were 1.65 and 6.31 respectively.In selected patients with MG, extended transsternal thymectomy in MG has good immediate and long-term results.

Trauma is the leading cause of death in young patients and thoracic trauma (TT) is responsible for 25-35% of trauma deaths.To describe and compare features, trauma severity indexes and morbidity of patients admitted for TT in the past three decades.Review of a TT database, operative notes and medical records of patients. These were separated by decade of admission (1981-1990, 1991-2000, 2001-2010). TT characteristics were compared. Injury Severity Score (ISS), Revised Trauma Score (RTS-T) and Trauma Injury Severity Score (TRISS) were calculated.A total of 3,068 TT were reviewed. In the 1981-1990 period, 604 cases of TT were registered (19.7%), in the 1991-2000 period, 1,070 cases (34.9%) and in the 2001-2010 period, 1,394 cases (45.4%) (p0.05). The ages of patients in each of these periods were 34.9 ± 15.5, 33.9 ± 16.2 and 35.7 ± 18.2 years respectively (p0.05). The proportion of patients aged 65 years or more were 6.6, 7.7 and 10.1% respectively, the proportion of females was 6.1, 9.4 and 12.0%, respectively. The causing agents per decade were knife wounds in 51.5, 61.1 and 60.0% of cases respectively, firearms in 2.5, 3.3 and 5.0% of cases respectively, multiple trauma in 13.9, 14.5 and 9.0% respectively and morbidity in 18.7, 19.7 and 11.7%, respectively. The ISS per decade was 11.9 ± 6.5, 12.9 ± 6.9 and 10.4 ± 6.8 respectively. No significant difference were found in mortality (1.5, 3.0, 2.0% respectively) or TRISS score (2.7, 3.2 and 3.8% respectively).An increase in the number of hospital admission for TT has occurred in the last three decades, with an increase in the proportion of admissions of subjects aged 65 years or more, females and with firearm injuries.

Background: Coronary artery bypass graft surgery without cardiopulmonary bypass (CPB) is an alternative technique for myocardial revascularization. Aim: To report the early results and 4 yearsfollow up ofthefirst 220 cases operated with this technique. Patients and Methods: Descriptive study of 220 patients aged 60.6 ±8.8 years (171 men) undergoing off-pump coronary surgery between 2004 and 2008. One hundred seventy six (80%) patients had hypertension, 59 (26.8%) had diabetes, 86 (39%) dyslipidemia and 85 (38.6%) were smokers. One hundred forty one patients (64.1%) had stable angina. Fiftyfour (24.5%) had a recent infarction (< 90 days) and 46 (20.9%) had a previous angioplasty. Ejection fraction was < 30% in 9 (4.1%), 30% - 50% in 57 (25.9%) and > 50% in 154 (70%). Additive and logistic EuroSCORE were 3.32 and 3.55% respectively. We studied the complications and mortality at 30 days. Long term follow up (late mortality and major cardiovascular events such as myocardial infarction (MI) stroke and re-intervention were assessed using data of medical records and National Identification Registry Service until June 30, 2011. Results: A total of 481 bypasses were performed (2.27 bypassesl patient). There were 4 (1.8%) conversions and no incomplete revascularization. Post-Operative complications occurred in 42 patients. Eight neurological (five strokes), five renal (two required dialysis), 16 cardiovascular (four myocardial infarctions), 15 surgical and 11 infections. Three patients died (1.36%). After a follow up of 4.26 ± 1.02 years, overall survival was 92.3%, and survival free of myocardial infarction, stroke or re - intervention was 96.8%, 96.8% and 95.9% respectively. Conclusions: Off-pump coronary surgery in selected patients has immediate and late results comparable to traditional surgery.

Introducción: La principal ventaja de las bioprótesis es no requerir tratamiento anticoagulante. Sin embargo, algunas guías de manejo clínico recomiendan este tratamiento los primeros meses post cirugía. En los últimos años varios autores han demostrado la seguridad del uso exclusivo de aspirina en los primeros 3 meses después del reemplazo valvular aórtico con bioprótesis. Objetivo: Evaluar la morbimortalidad y complicaciones trombo embólicas y hemorrágicas en pacientes sometidos a reemplazo valvular aórtico (RVA) con bioprótesis tratados exclusivamente con aspirina (100 mg) los primeros tres meses post cirugía. Métodos: Estudio retrospectivo de 229 pacientes (137 hombres. edad 65,3 ± 11,76 años) operados de RVA con bioprótesis entre junio 2006 y diciembre 2011. Hubo 178 cirugías aisladas y 51 combinadas y 20 pacientes tenían endocarditis. Se estudió la morbimortalidad, complicaciones trombo embólicas y sangrado a 30 y 90 días y en el seguimento alejado hasta el 30 de junio de 2012. Resultados: A 30 días hubo 4 accidentes cerebrovasculares, 3 accidentes isquémicos transitorios y una isquemia mesentérica. Fallecieron 8 pacientes (3,5%). A los 90 días hubo 2 hemorragias (1 hemorragia digestiva, 1 hemotórax), no hubo nuevos eventos trombo embólicos ni otros fallecidos. El seguimiento promedio fue 27.8±17,7 meses (rango 6 - 72 meses). Durante el seguimiento fallecieron 17 pacientes y no se registraron eventos trombo embólicos ni hemorrágicos. Conclusión: En pacientes operados de reemplazo valvular aórtico con bioprótesis el uso exclusivo de aspirina fue seguro para prevenir complicaciones trombo embólicas.

podemos observar que se trato de pa-cientes relativamente jovenes (93% 50%), que recibieron en promedio 2,4 puentes / paciente y que correspondieron en su mayoria a injertos veno-sos. La arteria mamaria interna (AMI) se utilizo solo en un 9,9% de las cirugias.A principios de los 80, los cirujanos de la Cleve-land Clinic, en Estados Unidos, demostraron que la permeabilidad de los puentes venosos era inferior a la de la AMI, y que el uso de esta ultima se asociaba a una menor tasa de eventos (infartos, hospitaliza-ciones y necesidad de revascularizacion repetida) y a una mejor sobrevida de los pacientes