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[Problems in hypertension therapy in patients with a constant frequency pacemaker]
Zeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete
|November 1, 1980
Summary
Patients with fixed-rate pacemakers struggle with circulatory regulation. Certain medications can worsen orthostatic issues, but some antihypertensives may allow adaptation.
Area of Science:
- Cardiology
- Pharmacology
- Physiology
Context:
- Patients with fixed-rate pacemakers have limited heart rate variability, impacting circulatory regulation.
- Orthostatic stress, common in daily life, can be challenging for these patients.
- Medications affecting circulation, particularly antihypertensives, may exacerbate orthostatic intolerance.
Purpose:
- To investigate the acute and long-term effects of various drugs on orthostatic regulation in pacemaker patients.
- To assess the clinical relevance of specific medications in managing circulatory issues in this population.
Summary:
- Orthostatic experiments were conducted on patients with constant-frequency pacemakers.
- Acute effects of nitroglycerin, trapidil, dihydroergotoxin, and aminophylline were evaluated.
- Long-term effects of antihypertensive drugs on orthostatic regulation were examined, with a focus on adaptation.
Impact:
- Nitroglycerin's acute effects are clinically significant for pacemaker patients.
- Long-term antihypertensive therapy may allow for patient adaptation to orthostatic challenges.
- Rauwolfia alkaloids and clonidine show no adverse effects on orthostatic behavior with oral administration.