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Table 6 Comparison of the nonlinear HRV parameters between intraoperative times (for CABG and TAVI) and non-surgical times (N = 32)

From: Activation of the stress response among the cardiac surgical residents: comparison of teaching procedures and other (daily) medical activities

Variable

Intraoperative times

Non-surgical times

p value

Mean ± SD

Mean ± SD

SD1 (ms)

16.3 ± 5.77

24.1 ± 4.42

< 0.001

SD2 (ms)

54.8 ± 17.32

56.7 ± 9.70

0.231

DFA1

1.51 ± 0.071

1.33 ± 0.083

 < 0.001

DFA2

0.53 ± 0.229

0.42 ± 0.044

0.018