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Atypical myocardial infarction and hypertension: an inner city experience
L T Clark1, L L Adams-Campbell, M Maw
1State University of New York Health Science Center, Brooklyn.
Insights
Hypertension in acute myocardial infarction patients is linked to more female patients, prior heart failure, and pulmonary edema. These factors may contribute to higher mortality rates due to left ventricular dysfunction.
Area of Science:
- Cardiology
- Internal Medicine
- Clinical Research
Background:
- Hypertension is a significant risk factor for cardiovascular diseases, including acute myocardial infarction (AMI).
- Understanding the clinical characteristics of AMI patients with hypertension is crucial for risk stratification and management.
Purpose of the Study:
- To retrospectively analyze and compare the clinical features of acute myocardial infarction patients with and without hypertension.
- To identify specific characteristics that differentiate hypertensive AMI patients.
Main Methods:
- Retrospective study of 304 patients admitted with acute myocardial infarction.
- Comparison of clinical features, demographics, medical history, and presenting symptoms between patients with and without hypertension (defined as >= 160/95 mmHg).
Main Results:
- 46% of AMI patients had hypertension on admission.
- Hypertensive patients were more likely to be female, have a history of hypertension and congestive heart failure, and present with shortness of breath and pulmonary edema.
- No significant differences were observed in racial distribution, age, angina, previous myocardial infarction, diabetes, smoking, family history, type of AMI, peak CK, cholesterol, or mortality rates between the groups.
Conclusions:
- Female sex, history of hypertension, history of congestive heart failure, and pulmonary edema characterize AMI patients with hypertension.
- These clinical differences suggest more severe left ventricular dysfunction in hypertensive AMI patients, potentially explaining higher follow-up mortality.
Abstract:
The clinical features of 304 patients with acute myocardial infarction with and without hypertension were studied retrospectively. This inner city population consisted of 172 (57%) males and 132 (43%) females; 155 (51%) patients were black, 88 (29%) Hispanic, and 61 (20%) white by self-identification. Hypertension (greater than or equal to 160/95 mmHg) was present on admission in 46% (139) of patients. Typical ischaemic chest pain was the most common presenting symptom and occurred with a similar frequency in patients with and without hypertension. However, the group with hypertension consisted of proportionately more females than males, more frequently had previously diagnosed hypertension and congestive heart failure, and more often presented with shortness of breath and pulmonary oedema. The racial distribution, mean ages, prevalence of angina, previous myocardial infarction, diabetes, smoking, family history of cardiovascular disease, type of myocardial infarction, peak creatinine phosphokinase, plasma cholesterol, and mortality rates were similar in both groups. Thus, female sex, history of hypertension, history of congestive heart failure, and pulmonary oedema characterised patients with compared to those without hypertension. These findings suggest that the higher mortality rate observed in hypertensives during follow-up after myocardial infarction may be due, at least in part, to more severe underlying left ventricular dysfunction.