Smoking habits in consecutive patients with acute myocardial infarction: prognosis in relation to other risk indicators and to whether or not they quit smoking.
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.
Herlitz
J
J
Division of Cardiology, Sahlgrenska University Hospital, Göteborg, Sweden.
Bengtson
A
A
Hjalmarson
A
A
Karlson
B W
BW
D000368:Aged; D002423:Cause of Death; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality* / Q000517:prevention & control; D010359:Patient Readmission / Q000706:statistics & numerical data; D011379:Prognosis; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects / Q000401:mortality*; D016540:Smoking Cessation; D016019:Survival Analysis; D013548:Sweden / Q000453:epidemiology