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The purpose of this study was to explore the diagnostic value of Treadmill Exercise Test(TET) in patients with vasovagal syncope(VVS).
From Sep 2008 to Sep 2016 in the Third Affiliated Hospital, Sun Yat-sen University, 12 patients with syncope or pre-syncope in TET recovery phase were assessed. All cases had not found ST-segment elevation of depression. All patients under routine checkup to exclude organic heart diseases, neurological diseases and other conditions then received HUTT after TET in another day. Heart rate and arterial pressure were monitored throughout both TET and HUTT. Subject characteristics, TET results, disease subtypes, premonitory symptoms of syncope, incidence of syncope in TET or HUTT were retrospectively analyzed.
12 cases of BHUT and NHUT are all negative. These patients comprised 10 males and 2 female (age 21-43 years old, mean:34.0±7.8). The maximal heart rate was 180.5±6.7 bpm. The metabolic equivalents of all cases were 13.15±1.7mets. Disease subtypes: 2 case was vasodepressive type, 6 cases were cardioinhibitory type, 4 cases were mixed type. Disease subtypes: 2 case was vasodepressive type, 6 cases were cardioinhibitory type, 4 cases were mixed type. The total test time of BHUT is 45 minutes, and the total test time of NHUT is 20 minutes after sublingualing nitroglycerin.
TET is of some value in the diagnosis of vasovagal syncope. Attention should be paid to exercise protection in patients with syncope in TET.