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[The effects of nimodipine on cerebrovascular function in acute cerebral infarction]
Insights
Nimodipine treatment improved cerebrovascular function in acute cerebral infarction patients, enhancing blood flow and elasticity. Close monitoring of blood pressure and ECG is recommended during treatment.
Area of Science:
- Neurology
- Pharmacology
- Cardiovascular Medicine
Context:
- Acute cerebral infarction (ACI) poses significant risks to cerebrovascular function.
- Nimodipine is a calcium channel blocker with potential cerebrovascular effects.
- Evaluating its impact on hemodynamics and vital signs is crucial.
Purpose:
- To assess the efficacy of nimodipine in improving cerebrovascular hemodynamics in ACI patients.
- To monitor changes in blood pressure (BP), heart rate (HR), and electrocardiography (ECG) during nimodipine therapy.
- To establish optimal treatment duration for nimodipine in ACI.
Summary:
- Nimodipine administration (10 mg IV daily for 14 days) in 30 ACI patients led to significant improvements in cerebrovascular function.
- Key hemodynamic improvements included increased cerebral blood velocity and flow, decreased cerebrovascular resistance and critical pressure, and enhanced elasticity and autoregulation.
- BP decreased significantly by day 3, stabilizing thereafter, while HR showed a notable decrease by day 14.
Impact:
- Nimodipine demonstrates significant benefits for cerebrovascular function in acute cerebral infarction.
- The findings suggest a potential treatment duration of approximately 10 days for optimal nimodipine efficacy.
- Continuous monitoring of BP and ECG is essential during nimodipine treatment to manage potential side effects.
Objectives:
To use cerebrovascular hemodynamics indexes (CVDI) to evaluate the effects of nimodipine on cerebrovascular function in acute cerebral infarction (ACI), and to investigate the changes of blood pressure (BP), heart rate (HR), and electrocardiography (ECG).
Methods:
30 patients with ACI in internal carotid artery system within 72 h from the oneset of symptoms were given nimodipine (10 mg, 0.25-0.5 microgram/kg/min) by intravenous drip (i.v.) every day for 14 days. CVDI, BP, HR and ECG were examined at various times during treatment.
Results:
Nimodipine improved cerebrovascular function significantly. Cerebral blood velocity and flow increased, cerebrovascular resistance and criticle pressure decreased, and cerebrovascular elasticity and autoregulation improved. BP dropped significantly at the third day, and mainteined stable afterward. HR dropped remarkably at the fourteen day (P = 0.011). It was reasonable that the treatment of nimodipine (i.v.) lasted 10 days or so.
Conclusions:
Nimodipine improves cerebrovascular function significantly, but monitoring of BP and ECG is necessary during its application.