Evidence of parasympathetic impairment in some patients with cardiac syndrome X.

  title={Evidence of parasympathetic impairment in some patients with cardiac syndrome X.},
  author={G Gulli and Roberto Cemin and Paolo Pancera and Giuliana Menegatti and Corrado Vassanelli and Antonio Cevese},
  journal={Cardiovascular research},
  volume={52 2},
OBJECTIVES Cardiac syndrome X (SX) is a clinical condition characterised by angina, positive exercise stress test and negative coronary angiography; it has often been attributed to sympathetic hyperactivity. Here we tested the hypothesis that a parasympathetic, rather than a sympathetic, dysfunction could be the cause of the autonomic imbalance observed in SX. METHODS In 20 subjects with diagnosed SX and in 12 age-matched controls, we studied autonomic function by performing spectral analysis… CONTINUE READING
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