LONG Q-T INTERVAL SYNDROME IN DIABETIC NE UROPATHY

Q - T interval was measured on electrocardiograms recorded at rest and during hypoxic stress in 66 patients, Forty two of these patients had non-insulin-dependent diabetes including 21 patients with signs of di stal neuropathy. Q - T interval corrected for heart rate (Q - T-c) was calculated according to the Bazett formula, Prolongation of Q - T-c w as observed in patients with neuropathy both at rest and during hypoxi a, By the forth minute of hypoxia in neuropathy patients Q - T-c excee ded 0,440 s and its value correlated closely with pulse rate (r=0,84, p<0,01). Basing on these results monitoring of the Q - T-c interval is recommended as an complementary specific test of diagnosis of diabeti c autonomic (vegetative) cardiac neuropathy.