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Stroke following acute myocardial infarction in diabetics
P M Pullicino1, M Xuereb, J Aquilina
1Department of Neurology, SUNY, Buffalo, New York.
Insights
Diabetes increases the risk of stroke after myocardial infarction (MI). Hypertension is a key risk factor for stroke in diabetic patients post-MI, with some also at risk for hypotensive stroke.
Area of Science:
- Cardiology
- Neurology
- Endocrinology
Background:
- Diabetes mellitus is a growing global health concern.
- Myocardial infarction (MI) survivors face numerous complications.
- The interplay between diabetes, MI, and subsequent stroke requires further investigation.
Purpose of the Study:
- To determine the incidence of stroke within one month following MI.
- To compare stroke rates in diabetic versus non-diabetic MI patients.
- To identify risk factors for post-MI stroke in diabetic individuals.
Main Methods:
- Prospective study of consecutive myocardial infarction patients.
- Comparison of stroke occurrence between diabetic and non-diabetic cohorts.
- Analysis of risk factors including prior stroke and hypertension.
Main Results:
- Diabetic patients had a significantly higher rate of stroke within 1 month post-MI (7% vs 3%).
- Previous stroke and hypertension were significant predictors of stroke in diabetics.
- Severe hypotension was more prevalent in diabetic patients experiencing stroke post-MI.
Conclusions:
- Diabetes is associated with an increased risk of stroke after myocardial infarction.
- Hypertension is a critical risk factor for stroke in diabetic patients post-MI.
- Diabetic patients may be susceptible to hypotensive strokes following MI.
Abstract:
To investigate the effect of diabetes on stroke after myocardial infarction (MI), we studied consecutive MI patients admitted to the coronary-care unit prospectively, and compared diabetics with non-diabetics. Seven per cent (11/148) of diabetics and 3% (8/297) of non-diabetics had a stroke within 1 month after MI (P = 0.020). Previous stroke and hypertension were significant risk factors for stroke after MI in diabetics, but there were no significant risk factors in non-diabetics. Hypertension was more frequent in diabetics with (12/14; 86%) than in diabetics without (63/134; 47%) a previous stroke (P less than 0.025). Severe hypotension was more frequent in diabetics (9/11) than in non-diabetics with stroke after MI (0/8) (P = 0.002). We conclude that hypertension is a risk factor for stroke after MI in diabetics, and that may be at risk for hypotensive stroke after MI. Stroke after MI may be more frequent in diabetics than in non-diabetics.