Citation

Buja G, Folino AF, Bittante M, Canciani B, Martini B, Miorelli M, Tognin D, Corrado D, Nava A. Pacing Clin. Electrophysiol. 1989; 12(3): 406-412.

Affiliation

Department of Cardiology, University of Padua Medical School.

Copyright

(Copyright © 1989, John Wiley and Sons)

DOI

unavailable

PMID

2466265

Abstract

We describe three athletes who had syncope after (case 1) or during (cases 2, 3) hyperventilation. During the episode, ECG showed prolonged sinus arrest. Clinical data and noninvasive investigations were normal and the phenomenon was not reproducible. Electrophysiological study after autonomic blockade allowed a prolonged intrinsic heart rate in case 1, and abnormal corrected sinus node recovery time in cases 1 and 2. During follow-up, symptomatic sinus arrest provoked by deep inspiration occurred in case 3. These cases document prolonged asystole of unknown etiology, secondary to hyperventilation, and probably caused by different vagally-mediated mechanisms.

Language: en