RESUMO: Objetivos: identificar a prevalência dos fatores de risco para doença arterial coronariana (DAC) em pacientes internados por síndrome coronariana aguda nas unidades intensivas de região produtora de fumo. ABSTRACT: Objectives: to identify the prevalence of risk factors for arterial coronary disease (ACD) in in-patients from tobacco producing region, who suffered from acute coronary syndrome in intensive care units. Methods: a descriptive, cross-sectional, retrospective study evaluated reports from 2006-2007 of adult in-patients in Vale do Rio Pardo hospitals linked to SUS system. Results: we review 152 reports, of these 80 (52%) patients were male, 70 (46%) live in Santa Cruz do Sul, and in other regions. Age average was 62, 1±13.4 years. 62.5% presented instable angina; 76.3% were smokers; 14.4% presented family history of acute myocardial infarct; 45.5% had dyslipidemia, and 68% with three or more associated RF for ACD. Conclusion: smoking, arterial hypertension and dyslipidemia were the most prevalent of risk factors. Knowledge of local culture allows the establishment of preventive measures for the habitants. Descriptors: Nursing; Risk factors; Coronary disease. RESUMEN: Objetivos: Identificar la prevalencia de factores de riesgo para enfermedad arterial coronaria en pacientes internados por síndrome coronaria aguda en unidades intensivas en región productora de tabaco. Métodos: Estudio descriptivo, transversal, 1 Enfermeiro, Especialista em Cardiologia, Hospital Divina Providência -Porto Alegre, RS.