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Introducao Os suportes coronarianos bioabsorviveis foram projetados para prevenir complicacoes em longo prazo relacionadas ao implante permanente de stents metalicos. O suporte vascular bioabsorvivel eluidor de everolimus (Absorb BVS; Abbott Vascular, Santa Clara, California) foi um dos primeiros suportes vasculares bioabsorviveis (BVS, do ingles bioresorbable vascular scaffold) a ser desenvolvido. O BVS Absorb e uma estrutura feita de acido poli-L-lactico revestido com polimero poli-DL-lactico, que elui o farmaco antiproliferativo everolimus. O BVS recebeu a marca CE para o tratamento de [...]

Introduction and objectives Degenerative aortic stenosis (DAS) is the most frequent valvular heart disease. It remains unclear how to identify asymptomatic DAS patients with normal left ventricular ejection fraction who have a high probability of event occurrence and would thus benefit from early intervention. Here, we describe a protocol for exercise hemodynamics in true asymptomatic patients with moderate or severe DAS and assess the prognostic value of the data obtained in this population. Methods This study involved a prospective single-centre registry of consecutive asymptomatic patients with moderate or severe DAS. Patients underwent cardiopulmonary exercise testing to confirm symptom absence during exercise and then right heart catheterization (RHC) at rest and during exercise. Events were defined as death, surgical aortic valve replacement, or transcatheter aortic valve implantation according to clinical guidelines. Results Thirty-three patients underwent baseline and exercise RHC. The mean aortic valve area was 1.08 cm2 and the aortic gradient was 39 mmHg. The mean pulmonary artery pressure was 21 mmHg with a pulmonary artery occlusion pressure of 14 mmHg and cardiac output of 5.6 L/min. The mean pulmonary artery pressure at peak exercise was 34 mmHg. After a mean follow-up of 27 months, 8 patients experienced an event (24%). There were no differences in baseline variables, aortic valve area, or cardiopulmonary exercise testing parameters between the event and event-free groups. Patients with an event did not have higher pulmonary or filling pressures after peak exercise but had lower pulmonary artery oxygen saturation on effort (median, 48% vs 57%, P = .03). Conclusions Exercise RHC is feasible and safe in this population. Peak pulmonary artery oxygen saturation might identify patients with increased risk of serious adverse events.

Resumen Introduccion y objetivos La estenosis aortica degenerativa es la valvulopatia mas frecuente. Aun no esta claro como identificar a los pacientes asintomaticos con fraccion de eyeccion del ventriculo izquierdo normal y alta probabilidad de eventos que por ello pudieran beneficiarse de una intervencion valvular precoz. En este estudio se describe un protocolo de hemodinamica de esfuerzo para los pacientes asintomaticos con estenosis aortica moderada o grave para evaluar su valor pronostico para esta poblacion. Metodos Estudio prospectivo unicentrico de una poblacion de pacientes con estenosis aortica moderada o grave asintomaticos. Los pacientes realizaron una ergoespirometria para confirmar la ausencia de sintomas en esfuerzo. Despues los pacientes se sometieron a un cateterismo cardiaco derecho basal y de esfuerzo. Se definio evento como muerte o necesidad de reemplazo de valvula aortica quirurgico o percutaneo basado en las guias clinicas. Resultados Se sometio a 33 pacientes a cateterismo cardiaco derecho basal y de esfuerzo. El area valvular aortica media fue de 1,08 cm2 y el gradiente aortico medio, 39 mmHg. La presion arterial pulmonar media fue de 21 mmHg, con una presion de oclusion en la arteria pulmonar de 14 mmHg y un gasto cardiaco de 5,6 l/min. La presion pulmonar media en ejercicio maximo fue de 34 mmHg. Tras un seguimiento medio de 27 meses, 8 pacientes sufrieron un evento (24%). No hubo diferencias en las variables basales, el area valvular aortica o los parametros de ergoespirometria. Los pacientes con evento no tuvieron mayores presiones pulmonares o presiones de llenado en ejercicio maximo, pero el grupo con eventos mostro menor saturacion de oxigeno en la arteria pulmonar en esfuerzo (mediana, el 48 frente al 57%; p = 0,03). Conclusiones El cateterismo cardiaco de esfuerzo es seguro y factible en esta poblacion. La saturacion de oxigeno en la arteria pulmonar en esfuerzo podria identificar a un grupo de pacientes con un aumento del riesgo de eventos adversos graves.

Resumen Introduccion y objetivos El impacto de la intervencion coronaria percutanea (ICP) sobre oclusiones coronarias cronicas totales (OCT) presenta controversias. Se analizan los resultados agudos y al seguimiento en nuestro entorno. Metodos Registro prospectivo de ICP sobre OCT en 24 centros durante 2 anos. Resultados Se realizaron 1.000 ICP sobre OCT en 952 pacientes. La mayoria tenia sintomas (81,5%) y cardiopatia isquemica previa (59,2%), y hubo intentos de desobstruccion previos en un 15%. El SYNTAX anatomico fue 19,5 ± 10,6 y tenia J-score > 2 el 17,3%. El procedimiento fue retrogrado en 92 pacientes (9,2%). La tasa de exito fue del 74,9%, mayor en aquellos sin ICP previa (el 82,2 frente al 75,2%; p = 0,001), con J-score ≤ 2 (el 80,5 frente al 69,5%; p = 0,002) y con el uso de ecografia intravascular (el 89,9 frente al 76,2%; p = 0,001), que fue predictor independiente del exito. Por el contrario, lesiones calcificadas, > 20 mm o con munon proximal romo lo fueron de fracaso. El 7,1% tuvo complicaciones, como perforacion (3%), infarto (1,3%) o muerte (0,5%). Al ano de seguimiento, el 88,2% mejoro clinicamente en caso de ICP exitosa (frente al 34,8%; p Conclusiones Los pacientes del Registro Iberico con OCT tratados con ICP presentan complejidad clinico-anatomica, tasas de exito y complicaciones similares a los de otros registros nacionales e importante impacto de la recanalizacion exitosa en la mejoria funcional, que a su vez se asocio con menor mortalidad.

Introduction and objectives: There is current controversy regarding the benefits of percutaneous recanalization (PCI) of chronic total coronary occlusions (CTO). Our aim was to determine acute and follow-up outcomes in our setting. Methods: Two-year prospective registry of consecutive patients undergoing PCI of CTO in 24 centers. Results: A total of 1000 PCIs of CTO were performed in 952 patients. Most were symptomatic (81.5%), with chronic ischemic heart disease (59.2%). Previous recanalization attempts had been made in 15%. The mean SYNTAX score was 19.5 +/- 10.6 and J-score was > 2 in 17.3%. A retrograde procedure was performed in 92 patients (9.2%). The success rate was 74.9% and was higher in patients without previous attempts (82.2% vs 75.2%; P = .001), those with a J-score 20 mm, and blunt proximal cap were independent predictors of failed recanalization. The rate of procedural complications was 7.1%, including perforation (3%), myocardial infarction (1.3%), and death (0.5%). At 1-year of follow-up, 88.2% of successfully revascularized patients showed clinical improvement (vs 34.8%, P < .001), which was associated with lower mortality. At 1-year of follow-up, the mortality rate was 1.5%. Conclusions: Compared with other national registries, patients in the Iberian registry undergoing PCI of a CTO showed similar complexity, success rate, and complications. Successful recanalization was strongly associated with functional improvement, which was related to lower mortality. (C) 2018 Published by Elsevier Espana, S.L.U. on behalf of Sociedad Espanola de Cardiologia.

Objectives The aims of this registry were to determine the incidence, predictors, and prognostic value of periprocedural acute kidney injury (AKI) after left atrial appendage closure (LAAC). Background No data exist on the occurrence of AKI after LAAC. Methods A total of 355 patients undergoing LAAC were included in the study. AKI was defined as an absolute or a relative increase in serum creatinine of >0.3 mg/dl or ≥50%, respectively, after the procedure or the need for hemodialysis during index hospitalization. Results The incidence of AKI was 9%, and patients with worse baseline renal function were at higher risk for developing AKI (odds ratio: 1.32; 95% confidence interval [CI]: 1.09 to 1.61; p = 0.004 for each 10 ml/min decrease in glomerular filtration rate). In-hospital bleeding events occurred more frequently in the AKI group (5.3% vs. 15.6%; p = 0.037). After a median follow-up period of 18 months, patients in the AKI group had higher mortality (hazard ratio [HR]: 2.59; 95% CI: 1.36 to 4.92; p = 0.004), more embolic events (HR: 6.14; 95% CI: 2.23 to 16.92; p = 0.001) and major bleeding events (HR: 2.36; 95% CI: 0.89 to 6.24; p = 0.083). The occurrence of AKI was an independent predictor of midterm mortality (HR: 2.00; 95% CI: 1.02 to 3.91; p = 0.044). Conclusions The occurrence of AKI was relatively frequent following LAAC, and patients with lower renal glomerular filtration rates were at high risk for developing this complication. AKI identified a group of patients with worse midterm outcomes, highlighting the importance of further preventive strategies in this population.