Inadequate sympathovagal balance in response to orthostatism in patients with unexplained syncope and a positive head up tilt test.

@article{Kouakam1999InadequateSB,
  title={Inadequate sympathovagal balance in response to orthostatism in patients with unexplained syncope and a positive head up tilt test.},
  author={Claude Kouakam and Dominique Lacroix and N Zghal and R{\'e}gis Logier and Didier Klug and Pierre Le Franc and Moustapha Jarw{\'e} and Salem Kacet},
  journal={Heart},
  year={1999},
  volume={82 3},
  pages={312-8}
}
AIM To analyse the immediate response of heart rate variability (HRV) in response to orthostatic stress in unexplained syncope. SUBJECTS 69 subjects, mean (SD) age 42 (18) years, undergoing 60 degrees head up tilt to evaluate unexplained syncope. METHODS Based on 256 second ECG samples obtained during supine and upright phases, spectral analyses of low… CONTINUE READING