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Table 4 Comparison of time-related 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

Mean RR (ms)

675.7 ± 56.57

777.3 ± 102.67

< 0.001

SDNN (ms)

40.6 ± 12.34

43.6 ± 7.22

0.112

Mean HR (1/min)

89.4 ± 7.71

78.5 ± 10.07

< 0.001

STD_HR (1/min)

4.34 ± 1.73

4.6 ± 1.43

0.135

RMSSD (ms)

23.1 ± 8.16

34.0 ± 6.25

< 0.001

NN50

816.7 ± 743.13

1786.2 ± 1059.80

< 0.001

pNN50 (%)

4.7 ± 4.58

10.6 ± 4.56

 < 0.001

RR_tri

10.6 ± 4.45

10.6 ± 1.82

0.350

TINN (ms)

296.94 ± 63.66

3406 ± 47.23

0.006