Impaired cardiorespiratory coupling in young normotensives with a family history of hypertension

Journal of Hypertension
Lin XieJianbao Zhang

Abstract

Although recent animal studies have highlighted the importance of cardiorespiratory coupling in the pathogenesis of hypertension, little research has assessed the cardiorespiratory coupling in humans at high risk of developing hypertension. The aim of this study was to investigate the cardiorespiratory coupling in healthy young individuals genetically predisposed to hypertension at both rest and mental stress conditions. We studied 39 normotensive male participants [21 with (FH+) and 18 without (FH-) a family history of hypertension]. Electrocardiography, impedance cardiography, beat-to-beat blood pressure and respiratory signal were simultaneously recorded during 5 min of rest and 5 min of mental arithmetic task (MAT). Stroke volume, cardiac output, systemic vascular resistance, baroreflex sensitivity and aortic pulse wave velocity were calculated. Autonomic activity was approximated noninvasively by the spectral analysis of cardiovascular variability. Respiratory sinus arrhythmia (RSA) and cardiorespiratory phase synchronization (CRPS) were used to define the amplitude and phase relationships of cardiorespiratory coupling. All resting parameters were similar between FH- and FH+ groups except resting CRPS, which was lower in F...Continue Reading

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Citations

Oct 19, 2019·Pflügers Archiv : European journal of physiology·Xiaoni WangJianbao Zhang

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