Abstract :
Aim and Objective: This study aims to investigate the relationship between Heart Rate Variability (HRV) and hypertension in individuals aged 45-60 years. The objective of this study was to explore how HRV patterns differ in hypertensive patients compared to normotensive controls in this age group.
Introduction: HRV is considered a marker of autonomic nervous system function, and a decrease in HRV has been associated with increased cardiovascular risk.
Materials and Methods: A cross-sectional study design was employed, with data collected from 150 participants (75 hypertensive and 75 normotensive). The HRV was assessed through a 5-minute resting ECG using time-domain and frequency-domain parameters. Statistical analysis with MS excel was conducted to compare HRV indices between hypertensive and normotensive groups and to evaluate correlations with demographic and clinical variables.
Result: The lower SDNN, RMSSD, and pNN50 values in hypertensive individuals suggest reduced autonomic regulation, particularly a decline in parasympathetic activity.
Conclusion: Additionally, the higher LF/HF ratio observed in hypertensives indicates an imbalance favouring sympathetic over parasympathetic activity, which is consistent with autonomic dysfunction seen in hypertension.
Keyword :
Heart Rate Variability (HRV), Hypertension, Autonomic nervous system, Parasympathetic activity, Middle-aged adults, Systolic blood pressure, Diastolic blood pressure