Thrombocytopenia after Aortic Valve Replacement with Perceval S Sutureless Bioprosthesis.

BACKGROUND AND AIM OF THE STUDY: Sutureless aortic bioprosthetic valves have become an alternative to conventional bioprostheses in high surgical risk cases. A significant decline in platelet count during the immediate postoperative period was observed in cases of Perceval S sutureless aortic valve implantation. The study aim was to determine how the reduction in platelet count after Perceval S prosthesis implantation compared to that after other bioprosthesis implants. METHODS: Between July 2011 and July 2014, a total of 77 isolated biological aortic valve replacements (AVRs) was performed at the authors' institution. These included 27 Perceval S prostheses (35.1%) and 50 Mitroflow prostheses (64.9%). Platelet counts and mean platelet volumes (MPVs) were determined on the day before surgery (T0) and at 24 h (T1), 48 h (T2) and 72 h (T3) after surgery. RESULTS: There were no significant differences in inhospital mortality (three Perceval S (11.1%) versus four Mitroflow 8%); p = 0.65), nor in morbidity between groups. A total of 16 patients (20.8%) had severe postoperative thrombocytopenia (<50×103/mm3). The incidence of severe thrombocytopenia was significantly higher (p = 0.046) in Perceval S patients (n = 9; 33.3%) than in Mitroflow patients (n = 7; 14%). The platelet count recovered in all patients with severe thrombocytopenia. In an adjusted-propensity multivariate logistic regression analysis, the Perceval S prosthesis was the major independent predictor of severe thrombocytopenia after AVR (OR 0.06, 95% CI: 0008-0.5, p = 0.009). CONCLUSION: Aortic bioprosthesis implantation with the Perceval S sutureless bioprosthesis appears to be associated with the occurrence of postoperative thrombocytopenia, though without any clinical implication for the patients. Prospective randomized trials are required to confirm these data.

El intervencionismo coronario percutáneo previo no aumenta la mortalidad hospitalaria en cirugía coronaria: análisis de una serie de 63.420 casos / Previous Percutaneous Coronary Intervention Does Not Increase In-Hospital Mortality After Surgical Revascularization: Analysis of 63420 Cases

Introducción En diversas publicaciones de los últimos años se señala una mortalidad hospitalaria mayor de la cirugía de revascularización miocárdica en pacientes con antecedente de intervencionismo coronario percutáneo previo exitoso; por su parte, los modelos de riesgo de mortalidad en cirugía cardíaca publicados hasta la actualidad no han incluido este antecedente como factor de riesgo. Objetivo Analizar si el intervencionismo coronario percutáneo previo es un factor de riesgo de mortalidad hospitalaria en la cirugía de revascularización coronaria. Material y métodos Entre enero de 1997 y diciembre de 2007 se analizaron un total de 78.794 pacientes sometidos a cirugía coronaria, recogidos en la base de datos del Ministerio de Sanidad de España. Tras aplicar los criterios de exclusión, el estudio se realizó sobre un total de 63.420 pacientes, de los que 2.942 (4,6%) tenían intervencionismo coronario percutáneo previo. Las variables continuas se compararon con las pruebas de U de Mann-Whitney o de la t de Student y las variables categóricas, mediante chi cuadrado. Se realizó un análisis de regresión logística univariado y multivariado y un análisis multivariado que incluía un índice de propensión. Resultados El intervencionismo coronario percutáneo previo no fue un predictor independiente de mortalidad hospitalaria en el análisis multivariado (odds ratio 0,88; intervalo de confianza del 95% 0,72-1,07; p = 0,20) ni en el modelo que incluía un índice de propensión (odds ratio 0,9; intervalo de confianza 95% 0,75-1,08; p = 0,27). Conclusión El intervencionismo coronario percutáneo previo parece no ser un factor de riesgo independiente de mortalidad hospitalaria en pacientes con intervención quirúrgica coronaria.

Introduction Recent publications indicate higher in-hospital mortality following myocardial revascularization in patients with previous history of successful percutaneous coronary intervention. Yet, no risk models of surgical mortality have included percutaneous intervention as a risk factor. Objectives The purpose of this study was to analyze whether previous percutaneous coronary intervention is a risk factor of in-hospital mortality in coronary artery bypass grafting. Methods The study included 78794 patients retrieved from the Spanish Ministry of Health database, who underwent coronary artery bypass graft surgery between January 1997 and December 2007. After applying exclusion criteria, 63420 patients were included in the study, 2942 (4.6%) of whom had previously undergone percutaneous coronary intervention. Continuous variables were compared using the Mann-Whitney U test or Student's t test, and categorical variables using the chi-square test. Univariate and multivariate logistic regression analyses and a multivariate analysis including a propensity score were performed. Results Previous percutaneous coronary intervention was not an independent risk factor of in-hospital mortality in the multivariate logistic regression analysis (odds ratio 0.88; 95% confidence interval, 0.72-1.07; p = 0.20) or after adjusting for propensity score (odds ratio 0.9; 95% confidence interval, 0.75-1.08; p = 0.27). Conclusion Previous percutaneous coronary intervention is not an independent risk factor of in-hospital mortality in patients undergoing coronary artery bypass grafting.

Disección septal tras infarto de miocardio inferior / Septal dissection after inferior acute myocardial infarction

La disección del septum interventricular y su rotura constituyen una posible causa de la comunicación interventricular luego de un infarto de miocardio. En esta presentación se describe el caso de un varón de 68 años con un infarto agudo de miocardio inferior que fue intervenido en forma satisfactoria de un seudoaneurisma septal diagnosticado intraoperatoriamente.

Septal dissection after inferior acute myocardial infarction Septal dissection and rupture are a possible cause of ventricular septal defect after acute myocardial infarction. This presentation reports the case of a 68 year-old man with inferior acute myocardial infarction, who was satisfactorily operated of a septal pseudoaneurysm diagnosed intraoperatively.