::INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES::

CODEN : IAJPBB
issn 2349-7750

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TITLE:

DETERMINE THE OCCURRENCE OF DOMAIN PARAMETERS OF HEARTRATE VARIABILITY IN MEDICAL STUDENTS AND EFFECT OF PSYCHOLOGICAL STRESS ON TIME

AUTHORS:

Dr Bilawal Wazir, Dr Babar Zia Sahi, Dr Ayesha Younus

ABSTRACT:

Objective: The purpose of our study was to determine the occurrence of domain parameters of heartrate variability in medical students and effect of psychological stress on time. Study design: A cross sectional study. Place and duration: This study was conducted at the department of Physiology, Services Hospital Lahore for the duration of one year starting from August, 2019 to September, 2020. Methodology: In our present study 200 students were selected. We divide students into two groups on the basis of their depression anxiety stress scale questionnaire score, these two groups are stressed and stress free. Parameters of heart rate variability including frequency domain (low frequency (LF), high frequency (HF) and LF/HF ratio) and time domain (heart rate and Root Mean Square of the Successive Differences (RMSSD) of R-R intervals) of each participant were analyzed using lab chart 8 pro software and Electrocardiogram (ECG) of each participant were measured in lab room. SPSS v.20 was used for the analysis of data. Results: In our study Heart Rate Variability (HRV) is significantly reduce by stress. Between parameters of heartrate variability (HRV), Low Frequency (LF), LF/HF ratio were significantly raised in stress group (p-value <0.05) and high frequency (HF) parameter of HRV was significantly increased in stress free group (p-value <0.05). Conclusion: At the end of our study, we conclude that parameters of Heart rate variability are reflected as reduces cardiac parasympathetic nerve activity and stress upsurges cardiac sympathetic nerve activity. Biochemical parameters may be measured along with HRV for evaluating stress effects on cardiac autonomic function. Keywords: Stress, Heart Rate Variability, Depression Anxiety Stress Scale, Electrocardiogram, Medical Students