Key result
The Valsalva maneuver significantly affected blood pressure, RR, PR, and QT intervals, and T wave amplitude in healthy young adults, with females additionally showing significant changes in heart rate.
Why the study?
The effects of stress that raises intrathoracic pressure, such as the Valsalva maneuver, needed to be assessed via ECG in healthy individuals in Khyber Pakhtunkhwa.
Does the Valsalva maneuver alter blood pressure, heart rate, and ECG parameters in healthy young adults?
Cross-Sectional (n=119)
Simple random sampling
No
Does the Valsalva maneuver alter blood pressure, heart rate, and ECG parameters in healthy young adults?
The Valsalva maneuver induces significant changes in blood pressure and specific ECG intervals (RR, PR, QT, T wave) in healthy young adults, with notable gender differences in the heart rate response.
Answers are grounded in this paper and cite their sources.
Supports gender-specific Valsalva responses in youth; leaves open clinical relevance and generalizability beyond cross-sectional data.
Background: Effect of stress application on the body in particular, one that raises the intrathoracic pressure, like the Valsalva Maneuver needed to be gauged in the population of Khyber Pakhtunkhwa. The aim of this research was to assess the changes induced by Valsalva manoeuvre on the body depicted via an ECG. Methods: It was a cross sectional study conducted on healthy young adults in the research laboratory of the physiology department, Khyber Medical College over a period of seven months. A total of 119 subjects were included in research, those with morbidities were excluded. The rest were made to perform the Valsalva manoeuvre for 15 seconds at maintaining pressure of 40 mmHg. The blood pressure, ECG and heart rate were measured during and after the procedure. The data was then analysed using SPSS version 26.0. Results: The significantly affected parameters by stress were blood pressure PR, RR, QT intervals and T wave. The changes in the parameters, at rest, were either insignificant or were differentially significant in both the genders. Conclusion: Valsalva manoeuvre has a direct effect on blood pressure and ECG and in turn on pumping of the heart via effecting the ventricular contraction and repolarization.
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Zafar et al. (2022) conducted a cross-sectional in Healthy (n=119). Valsalva maneuver vs. Resting state (post-stress) was evaluated on Changes in blood pressure, heart rate, and ECG parameters (RR, PR, QT intervals, T wave) (p=<0.01). The Valsalva maneuver significantly affected blood pressure, RR, PR, and QT intervals, and T wave amplitude in healthy young adults, with females additionally showing significant changes in heart rate.
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