Possible myocardial infarction in Auckland
Insights
This study examines possible myocardial infarction, a condition with chest pain but no clear diagnostic evidence. Polynesian females in Auckland showed higher susceptibility, with risk factors including hypertension and smoking.
Area of Science:
- Cardiology
- Epidemiology
Background:
- Possible myocardial infarction (PMI) presents as severe ischemic chest pain.
- Patients with PMI survive >24 hours but lack definitive electrocardiographic or enzymatic evidence of acute myocardial infarction.
Purpose of the Study:
- To describe the epidemiology of possible myocardial infarction in Auckland, New Zealand.
- To identify risk factors and demographic patterns associated with PMI.
Main Methods:
- Descriptive epidemiological study of PMI cases in Auckland.
- Analysis of incidence, sex ratio, and risk factors including alcohol consumption, smoking, hypertension, and electrocardiography results.
Main Results:
- Crude incidence of PMI was approximately 0.0012 per year.
- The sex ratio was 1.75 (males to females).
- Polynesian females exhibited a higher predisposition compared to Polynesian males. High alcohol consumption, frequent cigarette smoking, and a history of hypertension (52%) were noted. 24% had normal electrocardiography.
Conclusions:
- Possible myocardial infarction represents a distinct clinical entity with specific epidemiological characteristics.
- Polynesian females, hypertension, smoking, and alcohol consumption are significant factors associated with PMI.
- Short-term mortality (30 days) for PMI is low.
Abstract:
Possible myocardial infarction defines a group of cases who describe severe ischaemic-type chest pain, who survive at least 24 hours, but have no clear electrocardiographic or enzymatic evidence of acute myocardial infarction. The descriptive epidemiology of this condition is described for a group of such cases in Auckland, New Zealand. The sex ratio is 1.75 and the crude incidence about 0.0012 per year. There was evidence that Polynesian females are particularly prone to this condition compared to Polynesian males. Alcohol consumption was relatively high as was the frequency of cigarette smoking. Fifty-two percent had a history of hypertension. Twenty-four percent had a normal electrocardiography. Death during the first 30 days was uncommon.
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