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A new physiological approach to control essential hypertension.
W Selvamurthy1, K Sridharan, U S Ray
1Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi.
Indian Journal of Physiology and Pharmacology
|May 4, 1999
Summary
Essential Hypertension (EH) can be controlled by restoring baroreflex sensitivity. Both head-up tilt and yogic exercises effectively improved baroreflex function, reducing blood pressure in patients.
Area of Science:
- Cardiology
- Physiology
- Integrative Medicine
Background:
- Essential Hypertension (EH) is a complex condition with potential links to baroreflex dysfunction.
- Understanding the baroreflex mechanism is crucial for developing effective EH management strategies.
Purpose of the Study:
- To investigate the role of the baroreflex mechanism in the etiology of Essential Hypertension.
- To determine if restoring baroreflex sensitivity through postural tilt or yogic exercises can control EH.
Main Methods:
- 20 male EH patients were withdrawn from medication and divided into two groups.
- Group I underwent a 3-week head-up tilt protocol; Group II performed equivalent yogic exercises.
- Autonomic function was assessed via cardiovascular responses, cold pressor response (CPR), EEG alpha index (AI), catecholamines (CA), and plasma renin activity (PRA).
Main Results:
- Both interventions led to a significant reduction in blood pressure (P < 0.001).
- Progressive improvements in baroreflex sensitivity were observed in both groups.
- Attenuated sympatho-adrenal and renin-angiotensin activity were noted, indicated by changes in CPR, AI, CA, and PRA.
Conclusions:
- A strong association exists between Essential Hypertension etiology and baroreflex function.
- Baroreflex sensitivity exerts a controlling influence on sympatho-adrenal and renin-angiotensin systems.
- Specific yogic exercises demonstrate a physiological mechanism for treating Essential Hypertension by improving baroreflex sensitivity.