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Asystole with Syncope Secondary to Hyperventilation in Three Young Athletes
Author(s) -
BUJA GIANFRANCO,
FOLINO ANTONIO F.,
BITTANTE MARINA,
CANClANI BRUNO,
MARTINI BORTOLO,
MIORELLI MANUELA,
TOGNIN DANIELA,
CORRADO DOMENICO,
NAVA ANDREA
Publication year - 1989
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1989.tb02677.x
Subject(s) - hyperventilation , medicine , asystole , syncope (phonology) , anesthesia , etiology , cardiology , heart rate , sinus (botany) , athletes , blood pressure , physical therapy , botany , biology , genus
We describe three athletes who had syncope after (case 1) or during (cases 2, 3) hyperventilation. During the episode, ECG showed prolonged sinus arrest. Clinicai 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.