Outcome of unstable angina in patients with diabetes mellitus.
This prospective hospital-based, case-control study compares the outcome of unstable angina in non-insulin dependent diabetic patients and non-diabetic control subjects. One hundred and sixty-two diabetic patients and 162 non-diabetic control patients with unstable angina were entered into the study. The 3-month mortality was 8.6% (95% confidence interval, CI = 4.4-12.9%) in diabetic patients and 2.5% (CI = 0.1-4.9%) in control patients (p = 0.014). The 1-year mortality was 16.7% (CI = 10.9%-22.4%) in diabetic patients and 8.6% (CI = 4.4%-12.9%) in non-diabetic patients (p = 0.029). Diabetic patients received beta-blockade and underwent coronary angiography and angioplasty less frequently than controls; the frequency of unstable angina, of acute myocardial infarction, and coronary artery bypass grafting was similar in both groups at 1 year of follow-up. It is concluded that diabetic patients with unstable angina have a higher mortality than non-diabetic patients and that this difference is largely accounted for by early (first 3 months) mortality.
Fava
S
S
St Luke's Hospital, Malta.
Azzopardi
J
J
Agius-Muscat
H
H
D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000368:Aged; D000789:Angina, Unstable / Q000453:epidemiology / Q000401:mortality / Q000628:therapy*; D017130:Angioplasty; D001241:Aspirin / Q000627:therapeutic use; D002121:Calcium Channel Blockers / Q000627:therapeutic use; D016022:Case-Control Studies; D016001:Confidence Intervals; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000706:statistics & numerical data; D003327:Coronary Disease / Q000235:genetics; D003925:Diabetic Angiopathies / Q000453:epidemiology / Q000401:mortality / Q000628:therapy*; D004077:Digoxin / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology; D009566:Nitrates / Q000627:therapeutic use; D011446:Prospective Studies; D012307:Risk Factors; D013997:Time Factors
D000319:Adrenergic beta-Antagonists; D002121:Calcium Channel Blockers; D009566:Nitrates; D004077:Digoxin; D001241:Aspirin