Table 2 Hemodynamic parameters and types of hemodynamic instability of two groups during anesthesia induction, surgery and recovery stages.

From: Laryngeal mask airway improves hemodynamics and reduces pharyngeal discomfort in total joint arthroplasty

Parameters

EI group

n = 50

LMA group

n = 50

P value

Anesthesia induction

 Mean SBP, mmHg

107.8 ± 8.7

106.1 ± 11.0

0.407

 Mean DBP, mmHg

67.0 ± 7.4

66.5 ± 9.3

0.779

 Mean MAP, mmHg

76.5 ± 7.2

75.9 ± 9.1

0.726

 Mean HR

62.3 ± 7.8

57.4 ± 5.0

 < 0.001*

 Mean SpO2, %

99.7 ± 0.4

99.7 ± 1.0

0.891

 Hemodynamic instability

20 (40)

2 (4)

 < 0.001*

 Hypertension

18 (36)

2 (4)

 < 0.001*

 Hypotension

2 (4)

0

0.153

 Heart rate fluctuations

0

0

NA

 Arrhythmias

0

0

NA

 Hypoxemia

0

0

NA

Surgery

 Intraoperative maximum SBP, mmHg

148.6 ± 21.9

140.8 ± 19.5

0.079

 Intraoperative maximum DBP, mmHg

92.6 ± 13.6

88.8 ± 12.7

0.176

 Intraoperative maximum HR

79.6 ± 13.1

76.8 ± 13.1

0.321

 Intraoperative minimum SBP, mmHg

85.0 ± 9.1

88.9 ± 9.9

0.055

 Intraoperative minimum DBP, mmHg

53.1 ± 7.2

56.7 ± 8.2

0.029*

 Intraoperative minimum HR

51.8 ± 9.4

51.7 ± 5.6

0.961

 Intraoperative mean SBP, mmHg

108.6 ± 10.3

107.2 ± 8.5

0.497

 Intraoperative mean DBP, mmHg

67.5 ± 7.1

68.1 ± 7.1

0.688

 Intraoperative mean MAP, mmHg

77.2 ± 6.9

77.4 ± 6.8

0.847

 Intraoperative mean HR

63.3 ± 8.8

60.7 ± 7.1

0.120

 Mean SpO2, %

99.6 ± 0.7

99.8 ± 0.3

0.159

 Hemodynamic instability

31 (62)

7 (14)

 < 0.001*

 Hypertension

22 (44)

5 (10)

 < 0.001*

 Hypotension

5 (10)

1 (2)

0.092

 Heart rate fluctuations

4 (8)

1 (2)

0.169

 Arrhythmias

0

0

NA

 Hypoxemia

0

0

NA

Anesthetic resuscitation

 Mean SBP, mmHg

132.5 ± 15.1

128.4 ± 20.0

0.285

 Mean DBP, mmHg

80.1 ± 9.2

78.1 ± 10.8

0.342

 Mean MAP, mmHg

92.3 ± 9.6

89.7 ± 12.0

0.267

 Mean HR

74.7 ± 11.2

71.8 ± 7.4

0.163

 Mean SpO2, %

99.4 ± 1.0

99.4 ± 1.1

0.822

 Hemodynamic instability

39 (78)

12 (24)

 < 0.001*

 Hypertension

35 (70)

12 (24)

 < 0.001*

 Hypotension

2 (4)

0

0.153

 Heart rate fluctuations

2 (4)

0

0.153

 Arrhythmias

0

0

NA

 Hypoxemia

0

0

NA

  1. Values are mean ± SD or n (%), unless otherwise noted. SBP: Systolic Blood Pressure; DBP: Diastolic Blood Pressure; MAP, mean arterial pressure; HR: Heart Rate; SpO2, Saturation of Peripheral Oxygen; NA, not applicable. *P < 0.05.