Jm. Fritschyelle et al., AN EPISODE OF VENTRICULAR-TACHYCARDIA DURING LONG-DURATION SPACEFLIGHT, The American journal of cardiology, 81(11), 1998, pp. 1391
An episode of nonsustained ventricular tachycardia was recorded from a
crew member during the second month aboard the MIR space station. Alt
hough asymptomatic, this cardiac event increases the concern that seri
ous cardiac dysrhythmias may be a limiting factor during long-duration
spaceflight.