Influence of Stress on Quality of Sleep and QT Interval Variables among Young Adult Medical Students- A Cross-sectional Study
Introduction: Stress affects different cardiovascular responses and trigger arrhythmias through Autonomic Nervous System (ANS) activation. Medical students generally tend to reduce their sleep, in order to adjust and cope with their stressful and demanding workload. Aim: To assess the correlati...
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| Autores principales: | , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
JCDR Research and Publications Private Limited
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/cd2248eb67154fb288b0f3408500d110 |
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| Sumario: | Introduction: Stress affects different cardiovascular responses
and trigger arrhythmias through Autonomic Nervous System
(ANS) activation. Medical students generally tend to reduce
their sleep, in order to adjust and cope with their stressful and
demanding workload.
Aim: To assess the correlation of QT intervals variables with quality
of sleep and stress among young adult medical students.
Materials and Methods: This cross-sectional study was undertaken
in All India Institute of Medical Sciences, Mangalagiri, Andhra
Pradesh, India, among 60 medical students taken as internal
match for collection of data at the beginning of the academic
year (unstressed) and three weeks before the term-end
examination (stressed) during October 2019 to March 2020.
Two validated questionnaires namely, Pittsburgh Sleep Quality
Index (PSQI) to assess sleep quality and the Medical Student
Stress Questionnaire (MSSQ) to measure the stressors and
the intensity of stress were used among the medical students.
Short-term Electrocardiogram (ECG) recording was used to
measure QT interval variables. Descriptive statistics and paired
t-test were applied using Statistical Package for the Social
Sciences (SPSS) version 19.0. The p≤0.05 was considered
significant.
Results: Academic Related Stress (ARS) showed a highly significant
increase during the stressed conditions (p<0.001). The mean
global PSQI score of 6.03±2.76 was significantly higher (p-value
<0.001; PSQI >5) during the stressed conditions indicating
poor quality of sleep, when compared to 4.50±2.87 recorded in
unstressed conditions. In stressed conditions, QT interval measures
had moderate correlation with ARS. Quality of sleep had negative
correlations with all QT interval measures except for corrected QT
interval (QTc) and QTCmin.
Conclusion: Stress affects the sleep quality and induced QT
changes which reflected difference in variability between ‘stressed’
and ‘unstressed’ times. However, there is no significant impact
on QT duration among the young adult medical students. |
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