PMID: 8945059Nov 1, 1996Paper

Is there increased sympathetic activity in patients with mitral valve prolapse?

Pacing and Clinical Electrophysiology : PACE
G E KochiadakisP E Vardas

Abstract

The aim of this study was to investigate autonomic nervous system tone in patients with mitral valve prolapse (MVP). Heart rate variability (HRV) was assessed from 24-hour ambulatory Holter recordings in 28 patients with primary MVP and in 28 age and sex matched normal control subjects in a drug-free state. Sixteen of the MVP patients were symptomatic and 12 asymptomatic. Spectral HRV was calculated in terms of low (LF: 0.06-0.15 Hz) and high (HF: 0.15-0.40 Hz) frequency components using fast Fourier transform analysis, and the ratio LF/HF was calculated. Spectral analysis of HRV showed that the MVP patients, taken as a single group, had lower HF and LF and a higher LF/HF ratio than the controls. No significant difference in HRV was found between the 16 symptomatic and the 12 asymptomatic patients, but the symptomatic patients had a significantly higher LF/HF ratio than the controls. Our observations suggest that, during normal daily activities, patients with MVP experience a significant deviation in autonomic nervous system tone with predominance of the sympathetic branch. This predominance is more marked in symptomatic patients.

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Citations

Feb 1, 2011·Pediatric Cardiology·Kadir BabaogluKöksal Binnetoğlu
Aug 16, 2005·Current Psychiatry Reports·Jacqueline E MullerDan J Stein
Jun 16, 2010·Pacing and Clinical Electrophysiology : PACE·Murat AkcayMehmet Ozkan
May 29, 2007·The American Journal of Cardiology·Gülten TaçoyAtiye Cengel
Sep 29, 2006·Medical Hypotheses·Patrick William Chambers
Dec 1, 1999·Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology·L H OlsenH D Pedersen
Mar 27, 2002·Psychosomatic Medicine·Kurt Laederach-HofmannHeinz Rüddel
Dec 24, 2004·European Journal of Cardiovascular Prevention and Rehabilitation : Official Journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology·Nikolaos A KoutlianosAsterios P Deligiannis
Jul 21, 2005·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Sophie Digeos-HasnierJean-Yves Le Heuzey
Jun 27, 2006·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Huseyin GunduzCihangir Uyan

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