Smoking Habits in Consecutive Patients with Acute Myocardial Infarction: Prognosis in Relation to Other Risk Indicators and to Whether or Not they Quit Smoking

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Abstract
In all patients hospitalized in one single hospital due to acute myocardial infarction (AMI) during a period of 21 months, we describe the prognosis in relation to smoking habits and other risk indicators with death. Of 862 AMI patients, 37% reported smoking at the onset of AMI. Of the patients who smoked at the onset of AMI and who survived the first year, 53% reported having quit smoking. Patients who had quit smoking reported fewer symptoms of chest pain (p < 0.01), headache (p < 0.01) and dizziness (p < 0.001) as compared with patients who continued to smoke after one year. Of the patients who had quit smoking, the mortality during the subsequent 4 years was 17% as compared with 31% for patients who continued to smoke (p < 0.05). However, patients who quit smoking less frequently had a previous history of myocardial infarction and congestive heart failure. When correcting for such dissimilarities, quitting smoking did not remain significantly associated with prognosis.

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