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Beta-blockade in acute aneurysmal subarachnoid haemorrhage
G Hamann1, A Haass, K Schimrigk
1Department of Neurology, University of the Saarland, Homburg/Saar, Federal Republic of Germany.
Acta Neurochirurgica
|January 1, 1993
Summary
Beta-blockade with metoprolol effectively prevents autonomic dysfunction following subarachnoid hemorrhage. This treatment normalized heart rate and reduced the need for additional antihypertensive medications, improving patient survival.
Area of Science:
- Neurology
- Cardiology
- Pharmacology
Background:
- Acute aneurysmal subarachnoid hemorrhage (SAH) can lead to autonomic disorders.
- Autonomic dysfunction, particularly sympathetic overactivation, is a significant complication post-SAH.
Purpose of the Study:
- To investigate the efficacy of beta-blockade in preventing autonomic disorders after SAH.
- To evaluate the impact of metoprolol on sympathetic activation and related clinical parameters.
Main Methods:
- Prospective investigation of 11 patients treated with metoprolol (beta-1-selective beta-blocker).
- Comparison with 14 control patients receiving standard therapy.
- Monitoring of pulse rate, blood pressure, and antihypertensive medication dosage.
Main Results:
- Metoprolol treatment normalized pulse rate, especially in the first two weeks, unlike the control group.
- Patients receiving metoprolol required less additional antihypertensive medication due to reduced sympathetic activation.
- Improved survival rates were observed in the metoprolol-treated group with no severe side effects.
Conclusions:
- Beta-blockade, specifically with metoprolol, is effective in preventing and reducing autonomic disorders post-SAH.
- Metoprolol demonstrates superiority over non-selective agents in managing sympathetic tone activation.
- Cardioselective beta-blockers like metoprolol are suitable agents for managing SAH-induced autonomic dysfunction.