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Table 2 PR interval duration dynamics and average No of syncope in patient history in relation to the VASIS type

From: PR interval as a predictor of syncope in tilt-up testing in adolescents and young adults

  VASIS I VASIS III p
Initial PR interval (ms) 142.8 ± 2.3 150.6 ± 3.2 0.049
PR before syncope (ms) 102.9 ± 2.3 114.1 ± 2.8 0.003
PR interval change ratio (%) 27.6 ± 1.3 23.8 ± 1.5 0.047
PR after syncope (ms) 133.8 ± 2.1 138.7 ± 2.3 0.093
No of previous syncope 3.0 ± 0.3 5.7 ± 1.0 0.006