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[Effects of nicardipine in silent myocardial ischemia]
Insights
Silent myocardial ischemia episodes, detected via ST segment monitoring, indicate severe heart disease. Nicardipine therapy reduced silent ischemic episodes, improving cardiac health in patients with coronary heart disease.
Area of Science:
- Cardiology
- Nuclear Medicine
Background:
- Coronary heart disease (CHD) is a leading cause of mortality.
- Silent myocardial ischemia, often undetected, signifies severe cardiac pathology.
- Long-term ST segment monitoring is crucial for identifying silent ischemic episodes.
Purpose of the Study:
- To investigate the correlation between silent myocardial ischemic episodes and the severity of coronary heart disease.
- To evaluate the therapeutic effects of nicardipine on silent ischemic episodes in CHD patients.
Main Methods:
- 201Tl myocardial scintigraphy was employed in 29 patients diagnosed with coronary heart disease.
- Long-term ST segment monitoring was conducted to detect silent ischemic episodes.
- Patients underwent a 12-day nicardipine monotherapy.
Main Results:
- Painless ST segment depressions and prolonged ST segment elevations were associated with severe myocardial pathology.
- Nicardipine monotherapy demonstrated significant antianginal and hypotensive effects.
- The treatment reduced the frequency, duration, and amplitude of silent ST-segment depressions and the duration of silent ST-segment elevations.
Conclusions:
- Silent myocardial ischemia, characterized by specific ST segment changes, reflects significant myocardial disease severity.
- Nicardipine monotherapy effectively mitigates silent ischemic episodes and improves cardiovascular parameters in CHD patients.
Abstract:
201Tl myocardial scintigraphy was performed in 29 patients with coronary heart diseases and silent myocardial ischemic episodes revealed during a long-term monitoring of ST segment. The painless ST segment depression episodes and long high-amplitude painless ST segment elevations were found to be indicative of a significant severity of pathological processes in the myocardium. A 12-day nicardipine monotherapy produced antianginal and hypotensive effects and contributed to decrease in the frequency, duration, and amplitude of silent ST-segment depressions and in the duration of silent ST-segment elevations.