Search

Observational study [Abstract] Background: Infection is a major cause of morbidity and mortality after heart transplantation (HT). Little information about its importance in the immediate post-operative period is available. The aim of this study was to analyze the characteristics, incidence, and outcomes of in-hospital post-operative infections after HT. Methods: We conducted an observational, single-center study based on 677 adults who underwent HT from 1991 to 2015 and who survived the surgical intervention. In-hospital post-operative infections were identified retrospectively according to the medical finding in the clinical records. Results: Over a mean hospital stay of 24.5 days, 239 patients (35.3%) developed 348 episodes of infection (2 episodes per 100 patient-days). The most common sources of infection were those related to invasive procedures (respiratory infections, 115 [33%]; urinary tract infections, 47 [13.5%]; bacteremia, 42 [12.1%]; surgical site infections, 25 [7.2%]), in addition to abdominal focus (33, 9.5%). Enterobacteriaceae (76, 21.8%) and gram-positive cocci (58, 16.7%) were the predominant germs, although opportunistic infections were not infrequent (69, 19.8%). Ninety-five septic episodes were detected with a mean Sequential Organ Failure Assessment Score of 9.5 ± 5.3 points, with hemodynamic failure being the most severe organ dysfunction and renal dysfunction the most frequent one. Management included broad-spectrum antibiotics in 48.8% of episodes and surgical management in 13.8%. The overall antimicrobial success rate was 96.3%. Higher in-hospital mortality was observed among infected patients (15.1% vs. 10.3%), but this difference was not statistically significant (p = 0.067). The one-year survival and events were not different between patients suffering from a post-operative infection and those who did not. Conclusions: In-hospital infections were frequent in the post-operative period after HT and were associated with a poor short-term outcome. Patients who survived sepsis had a similar one-year morbidity and mortality compared with patients who did not develop an infection.

Introducción y objetivos El uso de dispositivos de asistencia circulatoria mecánica de corta duración como puente a trasplante es frecuente en España. Se desconocen la epidemiología y la repercusión de las complicaciones infecciosas en estos pacientes. Métodos Descripción sistemática de la epidemiología y análisis de la repercusión pronóstica de las complicaciones infecciosas en un registro multicéntrico retrospectivo de pacientes tratados con dispositivos de asistencia circulatoria mecánica de corta duración como puente a trasplante cardiaco urgente entre 2010 y 2015 en 16 hospitales españoles. Resultados Se estudió a 249 pacientes; 87 (34,9%) de ellos tuvieron un total de 102 infecciones. La vía respiratoria fue la localización más frecuente (n = 47; 46,1%). En 78 casos (76,5%) se obtuvo confirmación microbiológica; se aislaron en total 100 gérmenes causales, con predominio de bacterias gramnegativas (n = 58, 58%). Los pacientes con complicaciones infecciosas presentaron mayor mortalidad durante el periodo de asistencia circulatoria mecánica (el 25,3 frente al 12,3%; p = 0,009) y menor probabilidad de recibir un trasplante (el 73,6 frente al 85,2%; p = 0,025) que los pacientes sin infección. La mortalidad posoperatoria tras el trasplante fue similar en ambos grupos (con infección, el 28,3%; sin infección, el 23,4%; p = 0,471). Conclusiones Los pacientes tratados con dispositivos de asistencia circulatoria mecánica de corta duración como puente al trasplante cardiaco están expuestos a un alto riesgo de complicaciones infecciosas, las cuales se asocian con una mayor mortalidad en espera del órgano. Introduction and objectives Short-term mechanical circulatory support is frequently used as a bridge to heart transplant in Spain. The epidemiology and prognostic impact of infectious complications in these patients are unknown. Methods Systematic description of the epidemiology of infectious complications and analysis of their prognostic impact in a multicenter, retrospective registry of patients treated with short-term mechanical devices as a bridge to urgent heart transplant from 2010 to 2015 in 16 Spanish hospitals. Results We studied 249 patients, of which 87 (34.9%) had a total of 102 infections. The most frequent site was the respiratory tract (n = 47; 46.1%). Microbiological confirmation was obtained in 78 (76.5%) episodes, with a total of 100 causative agents, showing a predominance of gram-negative bacteria (n = 58, 58%). Compared with patients without infection, those with infectious complications showed higher mortality during the support period (25.3% vs 12.3%, P = .009) and a lower probability of receiving a transplant (73.6% vs 85.2%, P = .025). In-hospital posttransplant mortality was similar in the 2 groups (with infection: 28.3%; without infection: 23.4%; P = .471). Conclusions Patients supported with temporary devices as a bridge to heart transplant are exposed to a high risk of infectious complications, which are associated with higher mortality during the organ waiting period. Sin financiación 6.975 JCR (2021) Q1, 33/143 Cardiac & Cardiovascular Systems 0.407 SJR (2021) Q3, 205/356 Cardiology and Cardiovascular Medicine No data IDR 2021 UEM

[Abstract] Introduction and objectives. Short-term mechanical circulatory support is frequently used as a bridge to heart transplant in Spain. The epidemiology and prognostic impact of infectious complications in these patients are unknown. Methods. Systematic description of the epidemiology of infectious complications and analysis of their prognostic impact in a multicenter, retrospective registry of patients treated with short-term mechanical devices as a bridge to urgent heart transplant from 2010 to 2015 in 16 Spanish hospitals. Results. We studied 249 patients, of which 87 (34.9%) had a total of 102 infections. The most frequent site was the respiratory tract (n = 47; 46.1%). Microbiological confirmation was obtained in 78 (76.5%) episodes, with a total of 100 causative agents, showing a predominance of gram-negative bacteria (n = 58, 58%). Compared with patients without infection, those with infectious complications showed higher mortality during the support period (25.3% vs 12.3%, P = .009) and a lower probability of receiving a transplant (73.6% vs 85.2%, P = .025). In-hospital posttransplant mortality was similar in the 2 groups (with infection: 28.3%; without infection: 23.4%; P = .471). Conclusions. Patients supported with temporary devices as a bridge to heart transplant are exposed to a high risk of infectious complications, which are associated with higher mortality during the organ waiting period. [Resumen] Introducción y objetivos. El uso de dispositivos de asistencia circulatoria mecánica de corta duración como puente a trasplante es frecuente en España. Se desconocen la epidemiología y la repercusión de las complicaciones infecciosas en estos pacientes. Métodos. Descripción sistemática de la epidemiología y análisis de la repercusión pronóstica de las complicaciones infecciosas en un registro multicéntrico retrospectivo de pacientes tratados con dispositivos de asistencia circulatoria mecánica de corta duración como puente a trasplante cardiaco urgente entre 2010 y 2015 en 16 hospitales españoles. Resultados. Se estudió a 249 pacientes; 87 (34,9%) de ellos tuvieron un total de 102 infecciones. La vía respiratoria fue la localización más frecuente (n = 47; 46,1%). En 78 casos (76,5%) se obtuvo confirmación microbiológica; se aislaron en total 100 gérmenes causales, con predominio de bacterias gramnegativas (n = 58, 58%). Los pacientes con complicaciones infecciosas presentaron mayor mortalidad durante el periodo de asistencia circulatoria mecánica (el 25,3 frente al 12,3%; p = 0,009) y menor probabilidad de recibir un trasplante (el 73,6 frente al 85,2%; p = 0,025) que los pacientes sin infección. La mortalidad posoperatoria tras el trasplante fue similar en ambos grupos (con infección, el 28,3%; sin infección, el 23,4%; p = 0,471). Conclusiones. Los pacientes tratados con dispositivos de asistencia circulatoria mecánica de corta duración como puente al trasplante cardiaco están expuestos a un alto riesgo de complicaciones infecciosas, las cuales se asocian con una mayor mortalidad en espera del órgano.

Resumen Introduccion y objetivos Los valores plasmaticos de galectina-3 (Gal-3) estan elevados y se correlacionan con la mortalidad total y cardiovascular en pacientes con insuficiencia cardiaca, pero su correlacion con el pronostico tras el trasplante cardiaco (TxC) es desconocida. El objetivo fue describir la tendencia evolutiva y el valor pronostico de este biomarcador tras el TxC. Metodos Mediante enzimoinmunoensayo, se midieron las concentraciones plasmaticas de Gal-3 en muestras de suero de 122 receptores de TxC, antes y 1, 3, 6 y 12 meses despues de este. Mediante regresion de Cox se analizo el valor pronostico del valor plasmatico de Gal-3 a los 12 meses del TxC. El objetivo primario del estudio fue la variable combinada muerte o disfuncion del injerto. Resultados Las concentraciones de Gal-3 disminuyeron progresivamente durante el primer ano tras el TxC (medianas: pretrasplante, 19,1 ng/ml; 1 ano postrasplante, 14,6 ng/ml; p Conclusiones Las concentraciones plasmaticas de Gal-3 disminuyeron progresivamente durante el primer ano tras el TxC. Un valor plasmatico elevado de Gal-3 1 ano tras el TxC se correlaciono con un pronostico adverso.

[Abstract] Introduction and objectives: Circulating galectin-3 (Gal-3) is elevated and significantly correlates with all-cause and cardiovascular mortality in patients with heart failure. However, the relationship between serum Gal-3 and heart transplant (HT) outcomes is unclear. The aim of this study was to describe the longitudinal trend and prognostic value of Gal-3 levels after HT. Methods: Banked serum samples were available from 122 HT recipients, collected before transplant and at 1, 3, 6, and 12 months posttransplant. Gal-3 levels in these serum samples were measured by enzyme immune assay. Multivariable Cox regression was performed to determine the prognostic value of 12-month posttransplant Gal-3 serum levels. The primary endpoint was the composite variable all-cause death or graft failure over long-term posttransplant follow-up. Results: Circulating Gal-3 concentration steadily decreased during the first year after HT (median values: pretransplant, 19.1 ng/mL; 1-year posttransplant, 14.6 ng/mL; P

[Abstract] Introduction and objectives. To study the prognostic impact of preoperative nutritional status, as assessed through the nutritional risk index (NRI), on postoperative outcomes after heart transplantation (HT). Methods. We conducted a retrospective, single-center study of 574 patients who underwent HT from 1991 to 2014. Preoperative NRI was calculated as 1.519 × serum albumin (g/L) + 41.7 × (body weight [kg] / ideal body weight [kg]). The association between preoperative NRI and postoperative outcomes was analyzed by means of multivariable logistic regression and multivariable Cox regression. Results. Mean NRI before HT was 100.9 ± 9.9. According to this parameter, the prevalence of severe nutritional risk (NRI < 83.5), moderate nutritional risk (83.5 ≤ NRI < 97.5), and mild nutritional risk (97.5 ≤ NRI < 100) was 5%, 22%, and 10%, respectively. One year post-transplant mortality rates in these 4 categories were 18.2%, 25.3%, 7.9% and 10.2% (P < .001), respectively. The NRI was independently associated with a lower risk of postoperative infection (adjusted OR, 0.97; 95%CI, 0.95-1.00; P = .027) and prolonged postoperative ventilator support (adjusted OR, 0.96; 95%CI, 0.94-0.98; P = .001). Patients at moderate or severe nutritional risk had significantly higher 1-year post-HT mortality (adjusted HR, 1.55; 95%CI, 1.22-1.97; P < .001). Conclusions. Malnourished patients have a higher risk of postoperative complications and mortality after HT. Preoperative NRI determination may help to identify HT candidates who might benefit from nutritional intervention. [Resumen] Introducción y objetivos. Analizar el impacto del estado nutricional preoperatorio, evaluado mediante el índice de riesgo nutricional (IRN), en el pronóstico tras el trasplante cardiaco (TxC). Métodos. Se realizó un estudio retrospectivo de 574 pacientes que recibieron un TxC entre 1991 y 2014 en un centro. El IRN preoperatorio se calculó como 1,519 × albúmina (g/l) + 41,7 × (peso real [kg] / peso ideal [kg]). La asociación entre IRN preoperatorio y eventos clínicos posoperatorios se analizó mediante modelos multivariables de regresión logística y regresión de Cox. Resultados. El IRN preoperatorio medio de la población del estudio era de 100,9 ± 9,9. Según este parámetro, las prevalencias de riesgo nutricional grave (IRN < 83,5), moderado (83,5 ≤ IRN < 97,5) y leve (97,5 ≤ IRN < 100) antes del TxC eran el 5, el 22 y el 10% respectivamente. Las tasas de mortalidad a 1 año tras el TxC en estas 4 categorías fueron del 18,2, el 25,3, el 7,9 y el 10,2% (p < 0,001) respectivamente. El IRN preoperatorio resultó predictor independiente de menor riesgo de infección posoperatoria (odds ratio ajustada [ORa] = 0,97; intervalo de confianza del 95% [IC95%], 0,95-1,00; p = 0,027) y ventilación mecánica prolongada posoperatoria (ORa = 0,96; IC95%, 0,94-0,98; p = 0,001). Los pacientes con riesgo nutricional moderado a grave mostraron mayor mortalidad a 1 año tras el TxC (hazard ratio ajustada = 1,55; IC95%, 1,22-1,97; p < 0,001). Conclusiones. Los pacientes desnutridos tienen mayor riesgo de complicaciones posoperatorias y muerte tras el TxC. La determinación del IRN podría facilitar la identificación de candidatos a TxC que se beneficien de intervenciones nutricionales en espera del órgano.

Resumen Introduccion y objetivos Analizar el impacto del estado nutricional preoperatorio, evaluado mediante el indice de riesgo nutricional (IRN), en el pronostico tras el trasplante cardiaco (TxC). Metodos Se realizo un estudio retrospectivo de 574 pacientes que recibieron un TxC entre 1991 y 2014 en un centro. El IRN preoperatorio se calculo como 1,519 × albumina (g/l) + 41,7 × (peso real [kg] / peso ideal [kg]). La asociacion entre IRN preoperatorio y eventos clinicos posoperatorios se analizo mediante modelos multivariables de regresion logistica y regresion de Cox. Resultados El IRN preoperatorio medio de la poblacion del estudio era de 100,9 ± 9,9. Segun este parametro, las prevalencias de riesgo nutricional grave (IRN Conclusiones Los pacientes desnutridos tienen mayor riesgo de complicaciones posoperatorias y muerte tras el TxC. La determinacion del IRN podria facilitar la identificacion de candidatos a TxC que se beneficien de intervenciones nutricionales en espera del organo.

[Abstract] Introduction: Infection is one of the most significant complications following heart transplantation (HT). The aim of this study was to identify specific risk factors for early postoperative infections in HT recipients, and to develop a multivariable predictive model to identify HT recipients at high risk. Methods: A single-center, observational, and retrospective study was conducted. The dependent variable was in-hospital postoperative infection. We examined demographic and epidemiological data from donors and recipients, surgical features, and adverse postoperative events as independent variables. Backwards, stepwise multivariable logistic regression with a P-value < 0.05 was used to identify clinical factors independently associated with the risk of in-hospital postoperative infections following HT. Results: Six hundred seventy-seven patients were included in this study. During the in-hospital postoperative period, 348 episodes of infection were diagnosed in 239 (35.9%) patients. Seven variables were identified as independent clinical predictors of early postoperative infection after HT: history of diabetes mellitus, previous sternotomy, preoperative mechanical ventilation, primary graft failure, major surgical bleeding, use of mycophenolate mofetil, and use of itraconazole. Based on the results of multivariable models, we constructed a 7-variable (8-point) score to predict the risk of in-hospital postoperative infection in HT recipients, which showed a reasonable ability to predict the risk of in-hospital postoperative infection in this population. Prospective external validation of this new score is warranted to confirm its clinical applicability. Conclusions: In-hospital postoperative infection is a common complication after HT, affecting 35% of patients who underwent this procedure at our institution. Diabetes mellitus, previous sternotomy, preoperative mechanical ventilation, primary graft failure, major surgical bleeding, use of mycophenolate mofetil, and itraconazole were all independent clinical predictors of early postoperative infection after HT.

Carta científica

Introduction and objectives To assess the potential association between recipient Toxoplasma gondii serostatus and outcomes after heart transplant (HT). Methods We conducted a retrospective single-center study of 657 HT recipients from 1991 to 2015. Survival and the incidence of adverse clinical events of T. gondii -seropositive (n = 481) vs T. gondii -seronegative (n = 176) recipients were compared by means of 2 different multivariable Cox regression models. Model 1 included solely age and sex, and model 2 included other potential confounders. Results Over a median follow-up of 2903 days (interquartile range: 898-4757), 250 seropositive recipients (52%) and 72 seronegative recipients (41%) died. Univariable analysis showed increased posttransplant mortality among T. gondii -seropositive recipients (hazard ratio [HR] = 1.31; 95% confidence interval [95%CI], 1,00-1.70). After multivariable adjustment, the statistical significance of this association was lost (model 1: HR = 1.09; 95%CI, 0.83-1.43; model 2:HR = 1.12; 95%CI, 0.85-1.47). Recipient T. gondii seropositivity was independently associated with an increased risk of acute rejection (model 1: HR = 1.36; 95%CI, 1.06-1.74; model 2: HR = 1.29; 95%CI, 1.01-1.66). Multivariable models showed no statistically significant impact of recipient T. gondii serostatus on the incidence of infection, malignancy, coronary allograft vasculopathy, or the composite outcome of cardiac death or retransplant. No significant association was found between donor-recipient T. gondii serostatus matching and posttransplant outcome. Conclusions In this study, recipient T. gondii serostatus was not an independent predictor of long-term post-HT outcome.

Resumen Introduccion y objetivos Analizar el valor pronostico de la escala INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support) en pacientes tratados con trasplante cardiaco urgente. Metodos Analisis retrospectivo de 111 pacientes tratados con trasplante cardiaco urgente en nuestro centro entre abril de 1991 y octubre de 2009. Se asigno retrospectivamente a los pacientes a tres niveles de la escala INTERMACS en funcion de su situacion clinica previa al trasplante cardiaco. Resultados Los pacientes del grupo INTERMACS 1 (n = 31) presentaban mayor frecuencia de cardiopatia isquemica (p = 0,03) y shock tras cardiotomia (p = 0,02) que los pacientes del grupo INTERMACS 2 (n = 55) y los pacientes del grupo INTERMACS 3–4 (n = 25), asi como mayores dosis de catecolaminas (p = 0,001), mayor empleo de ventilacion mecanica (p Conclusiones Nuestros resultados indican que la escala INTERMACS resulta util para estratificar el pronostico postoperatorio tras el trasplante cardiaco urgente.

Peripheral extracorporeal membrane oxygenation (ECMO) is associated with a not negligible rate of vascular morbidity. Most vascular complications are related to limb ischaemia mainly due to insufficient limb perfusion or embolic events. To the best of our knowledge, this is the first report of a severe epidermolysis and overflow syndrome as a result of an overperfusion phenomenon through an unknown femoral arterio-venous fistula in a patient requiring ECMO support.

In recent decades, there has been an increase in the survival of recipients of solid organ transplants related to the improvement of the surgical technique, the introduction of protocols for immunosuppressive therapy, and the use of antimicrobial prophylaxis. Nonetheless, invasive fungal infection (IFI) is currently the major cause of morbidity and mortality in this group of patients. Invasive candidiasis is the most common IFI found after renal transplantation and is usually associated with total parenteral nutrition, broad-spectrum antibiotic therapy and abdominal surgery.We report the case of a recent kidney-pancreas transplant recipient who developed a persistent catheter-related candidemia caused by Candida glabrata. The patient was treated with anidulafungin and had a good clinical course with no significant drug interactions. We discuss the possible causes and diagnostic and therapeutic alternatives of this kind of infection.

[Abstract] Introduction and objectives. Our aim was to assess the prognostic value of the INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support) scale in patients undergoing urgent heart transplantation (HT). Methods. Retrospective analysis of 111 patients treated with urgent HT at our institution from April, 1991 to October, 2009. Patients were retrospectively assigned to three levels of the INTERMACS scale according to their clinical status before HT. Results. Patients at the INTERMACS 1 level (n = 31) more frequently had ischemic heart disease (p = 0.03) and post-cardiothomy shock (p = 0.02) than patients at the INTERMACS 2 (n = 55) and INTERMACS 3-4 (n = 25) levels. Patients at the INTERMACS 1 level showed higher preoperative catecolamin doses (p = 0.001), a higher frequency of use of mechanical ventilation (p < 0.001), intraaortic balloon (p = 0.002) and ventricular assist devices (p = 0.002), and a higher frequency of preoperative infection (p = 0.015). The INTERMACS 1 group also presented higher central venous pressure (p = 0.02), AST (p = 0.002), ALT (p = 0.006) and serum creatinine (p < 0.001), and lower hemoglobin (p = 0.008) and creatinine clearance (p = 0.001). After HT, patients at the INTERMACS 1 level had a higher incidence of primary graft failure (p = 0.03) and postoperative need for renal replacement therapy (p = 0.004), and their long-term survival was lower than patients at the INTERMACS 2 (log rank 5.1, p = 0.023; HR 3.1, IC 95% 1.1-8.8) and INTERMACS 3-4 level (log rank 6.1, p = 0.013; HR 6.8, IC 95% 1.2-39.1). Conclusions. Our results suggest that the INTERMACS scale may be a useful tool to stratify postoperative prognosis after urgent HT. [Resumen] Introducción y objetivos. Analizar el valor pronóstico de la escala INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support) en pacientes tratados con trasplante cardiaco urgente. Métodos. Análisis retrospectivo de 111 pacientes tratados con trasplante cardiaco urgente en nuestro centro entre abril de 1991 y octubre de 2009. Se asignó retrospectivamente a los pacientes a tres niveles de la escala INTERMACS en función de su situación clínica previa al trasplante cardiaco. Resultados. Los pacientes del grupo INTERMACS 1 (n = 31) presentaban mayor frecuencia de cardiopatía isquémica (p = 0,03) y shock tras cardiotomía (p = 0,02) que los pacientes del grupo INTERMACS 2 (n = 55) y los pacientes del grupo INTERMACS 3-4 (n = 25), así como mayores dosis de catecolaminas (p = 0,001), mayor empleo de ventilación mecánica (p < 0,001), balón de contrapulsación (p = 0,002) y dispositivos de asistencia ventricular (p = 0,002) y mayores tasas de infección preoperatoria (p = 0,015). El grupo INTERMACS 1 también mostraba mayores cifras de presión venosa central (p = 0,02), GOT (p = 0,002), GPT (p = 0,006) y creatinina (p < 0,001) y menores cifras de hemoglobina (p = 0,008) y aclaramiento de creatinina (p = 0,001). Tras el trasplante cardiaco, los pacientes del grupo INTERMACS 1 presentaron mayores incidencias de fracaso primario del injerto (p = 0,03) y necesidad de terapia de sustitución renal (p = 0,004), y su supervivencia a largo plazo fue menor que la de los pacientes de los grupos INTERMACS 2 (log rank = 5,1; p = 0,023; razón de riesgos [HR] = 3,1; intervalo de confianza [IC] del 95%, 1,4-6,8) e INTERMACS 3-4 (log rank = 6,1; p = 0,013; HR = 4; IC del 95%, 1,3-12,3). Conclusiones. Nuestros resultados indican que la escala INTERMACS resulta útil para estratificar el pronóstico postoperatorio tras el trasplante cardiaco urgente.