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Table 2 Comparison of MAP and HR between the two groups (x̅ + s)

From: Effects of conventional nursing in the operating room combined with transcutaneous electrical acupoint stimulation on postoperative cognitive dysfunction after total knee arthroplasty in elderly patients

Indicators

Timing

TEAS group (n = 20)

Control group (n = 20)

P

MAP

The time of entry

93 ± 11

98 ± 12

0.28

5 min after anesthesia

85 ± 12

83 ± 15

0.51

60 min during the operation

95 ± 13

93 ± 10

0.44

The end of the operation

98 ± 14

97 ± 13

0.74

HR

The time of entry

76 ± 6

78 ± 13

0.54

5 min after anesthesia

66 ± 9

63 ± 7

0.10

60 min during the operation

62 ± 11

65 ± 10

0.21

The end of the operation

52 ± 12

56 ± 9

0.24

  1. TEAS Transcutaneous acupoint electrical stimulation, MAP Mean arterial pressure, HR Heart rate