Angioplastia coronaria en la República Argentina: Comparación de los resultados en la fase hospitalaria de los estudios CONAREC V y CONAREC XIV

摘要

Introduction Percutaneous coronary intervention (PCI) is a constantly evolving procedure for the treatment of coronary disease. The CONAREC V registry assessed the characteristics of patients that underwent an angioplasty during 1996. Ten years later the results of the CONAREC XIV study were published. Objective To compare the demographic and clinical characteristics, use of devices and functional tests, and PCI results and complications in the CONAREC V versus the CONAREC XIV registries. Material and methods Both protocols databases were unified. The continuum variables were compared by means of the t test and the categorical with the chi square test. A logistic regression model, adjusted by confounders, was built in order to determine if the events rate from 2006 had decreased. Results The patients from CONAREC XIV were older (62.8±10.8 versus 60.6±10.9 years), with higher prevalence of arterial hypertension (72.4% versus 61.3%; p<0,001) and diabetes (19.2% versus 16.9%; p=0.017) and less tobacco consumption (22% versus 38%; p<0,001); they showed three vessel disease (20.2% versus 14.8%; p<0,001) and PCI to more than one vessel (25.3% versus 11.8%; p<0.001) more frequently; stent use was increased (94.5% versus 48%; p<0.001) as well as the indication in stable conditions (36,3% versus 18,2%; p<0,001). Use of functional tests in this context was lesser in the year 2005 (54% versus 65%; p<0.001). In patients with acute myocardial infarction (AMI), in the CONAREC XIV a lesser prevalence of anterior infarction (46% versus 57.8%; p<0.005) and cardiogenic shock (7.3% versus 13.5%; p=0.017) were observed. The rate of major events was lower in the last CONAREC XIV protocol (3.1% versus 8.9%; p<0.001). In the multivariate model, the patients included in the last study had decreased risk of events (OR 0.41, IC 95% 0.26-0.64; p<0,001). Conclusions The 2005 registry showed that PCI was performed in patients with more risk factors and increased angiographic risk. Indication under stable conditions increased. The rate of events such as infarction, surgery and death was reduced independently.