Why the study?
How does sympathovagal balance change across normotensive, prehypertensive, and hypertensive states?
Population
91 subjects including normotensives, prehypertensives, and hypertensives in an Indian population.
Design
Cross-sectional
Key result
Prehypertension and hypertension were associated with autonomic imbalance, characterized by vagal inhibition in prehypertensives and prominent vagal withdrawal in hypertensives.
Authors
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Sympathovagal imbalance may mark prehypertension progression; leaves open whether HRV modulation alters hypertension risk.
Observational (n=91)
How does sympathovagal balance change across normotensive, prehypertensive, and hypertensive states?
Vagal inhibition plays a critical role in the alteration of sympathovagal balance during the development of clinical hypertension from prehypertension.
Pal et al. (2011) conducted an observational in Prehypertension and Hypertension (n=91). Prehypertension and hypertension vs. Normotension was evaluated on Sympathovagal imbalance (spectral indices of HRV). Prehypertension and hypertension were associated with autonomic imbalance, characterized by vagal inhibition in prehypertensives and prominent vagal withdrawal in hypertensives.