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Safety culture is one of the requirements for preventing the occurrence of adverse effects. However, this has not been studied in the field of cardiology. The aim of this study is to evaluate the safety culture in a cardiology unit that has implemented and certified an integrated quality and risk management system for patient safety., Methods: A cross-sectional observational study was conducted in 2 consecutive years, with all staff completing the Spanish version of the questionnaire, "Hospital Survey on Patient Safety Culture" of the "Agency for Healthcare Research and Quality", with 42 items grouped into 12 dimensions. The percentage of positive responses in each dimension in 2014 and 2015 were compared, as well as national data and United States data, following the established rules., Results: The overall assessment out of a possible 5, was 4.5 in 2014 and 4.7 in 2015. Seven dimensions were identified as strengths. The worst rated were: staffing, management support and teamwork between units. The comparison showed superiority in all dimensions compared to national data, and in 8 of them compared to American data., Conclusions: The safety culture in a Cardiology Unit with an integrated quality and risk management patient safety system is high, and higher than nationally in all its dimensions and in most of them compared to the United States., (Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.)

Background: Renal dysfunction (RD) is one of the most significant long-term complications of heart transplantation (HT). Although RD is generally attributed to a direct effect of calcineurin inhibitors, it is more probable that multiple factors contribute to its development. The aim of this study was to search for predictor variables of RD at 1 year after HT., Methods: Three hundred sixteen consecutive HT patients were evaluated. The relationship between RD at 1 year (glomerular filtration rate <60 mL/min/1.73 m2), and pretransplant and 1-year follow-up variables was analyzed., Results: At 1 year following HT, 181 patients (57%) had a glomerular filtration rate of <60 mL/min/1.73 m2. On multivariate analysis, pretransplant serum creatinine values (odds ratio [OR] 5.106, 95% confidence interval [CI]: 2.35-11.09, P=0.0001) and cytomegalovirus (CMV) infection (OR 2.04, 95% CI: 1.08-3.83, P=0.027) were significant predictors of RD, and diabetes mellitus was almost significant (OR 1.65, 95% CI: 0.98-2.76, P=0.055). Variables protective against RD were induction therapy with interleukin-2 receptor antagonists versus muromonab-CD3 (OR 0.389, 95% CI: 0.24-0.61, P=0.0001), maintenance treatment with mycophenolate mofetil versus azathioprine (OR 0.42, 95% CI: 0.26-0.68, P=0.0001), and CMV antiviral prophylaxis (OR 0.38, 95% CI: 0.17-0.68, P=0.021)., Conclusions: Fifty-seven percent of HT patients had RD at 1 year posttransplant. RD was associated with pretransplant serum creatinine values, CMV infection, and diabetes mellitus. Induction with interleukin-2 receptor antagonists, treatment with mycophenolate mofetil, and antiviral prophylaxis for CMV infection all helped maintain renal function in this cohort of HT patients.