Background. Stroke is a leading cause of mortality and disability in Brazil and around the world. Cardioembolism is responsible for nearly 30% of the origins of ischemic stroke. Methods. We analyzed data of 256 patients with cardioembolic ischemic stroke (according to TOAST classification) who were admitted into the Hospital São Lucas-PUCRS from October 2011 to January 2014. The cardioembolic subtype was divided into six subgroups: arrhythmias, valvular heart disease, coronary artery disease, cardiomyopathy, septal abnormalities, and intracardiac injuries. The prevalence of the most important cardiovascular risk factors and medications in use for prevention of systemic embolism by the time of hospital admission was analyzed in each patient. Results. Among 256 patients aged 60.2 +/− 6.9 years, 132 males, arrhythmias were the most common cause of cardioembolism corresponding to 50.7%, followed by valvular heart disease (17.5%) and coronary artery disease (16%). Hypertension (61.7%) and dyslipidemia (43.7%) were the most common risk factors. Less than 50% of patients with arrhythmias were using oral anticoagulants. Conclusions. Identifying the prevalence of cardioembolic stroke sources subgroups has become an increasingly important role since the introduction of new oral anticoagulants. In this study, arrhythmias (especially atrial fibrillation) were the main cause of cardioembolism.
INTRODUÇÃOO carcinoma colorretal corresponde a uma das neoplasias malignas mais freqüentes no Brasil, sendo a terceira causa de óbito em mulheres e a quinta em homens, embora estas taxas sejam maiores na Améri-ca do Norte e Europa (1) . Estudos epidemiológicos indicam que a etiologia do adenocarcinoma de intestino grosso está associada a fatores genéticos e ambientais, como a dieta. A maioria dos pacientes, em áreas de risco, apresenta mais de 50 anos de idade no momento do diagnóstico. A incidência do adenocarcinoma colorretal é levemente maior no sexo masculino, acometendo em 40% dos casos o reto, em 30% dos casos o cólon esquerdo e em 30% o cólon direito. Em mulheres, há um predomínio de lesões no cólon direito (1,2,3,4,5) .Uma grande proporção de casos adenocarcinoma colorretal está relacionado à presença concomitante de adenomas, além da eventual associação com a polipose intestinal familiar, doença inflamatória intestinal crônica,
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