Table 2 Comparison of sociodemographic profiles of the two groups of elderly patients in the AICU

Age (in years)

76.27 ± 5.28

75.72 ± 5.17

78.84 ± 5.12

Gender(Male/Female)

59/50

53/37

6/13

Proportion of preoperative respiratory diseases (%)

20(18.3%)

12(13.3%)

8(42.1%)

6.85

0.009

ASA grade (II–III)

60/49

50/40

10/9

0.054

0.816

BMI

(kg/m²)

21.99 ± 3.24

22.13 ± 3.36

21.32 ± 2.55

Pneumoperitoneum duration (min)

211.07 ± 61.27

212.96 ± 59.97

202.11 ± 68.11

0.700

0.485

Duration of anesthesia

(min)

272.81 ± 63.74

272.82 ± 62.20

272.74 ± 72.44

0.005

0.996

Cisatracurium dosage (mg)

35.88 ± 8.17

35.96 ± 8.18

35.52 ± 8.29

0.215

0.830

Liquid intake and output (ml)

1376.70 ± 449.07

1383.11 ± 413.98

1346.31 ± 601.19

0.323

0.747

Muscle relaxation value during extubation (%)

83.97 ± 11.36

86.40 ± 9.69

72.47 ± 11.89

5.465

<0.001

Heart rate during extubation (times/min)

72.66 ± 5.97

72.44 ± 5.68

73.68 ± 7.28

0.822

0.413

Mean arterial pressure during extubation

(mmHg)

83.70 ± 7.06

83.54 ± 7.50

84.47 ± 4.51

0.519

0.605

pH during extubation

7.36 ± 0.03

7.36 ± 0.03

7.37 ± 0.04

PO₂ during extubation

(mmHg)

256.38 ± 85.96

252.21 ± 83.13

276.11 ± 98.32

1.102

0.273

PCO₂ during extubation

(mmHg)

41.42 ± 4.32

41.63 ± 4.05

40.42 ± 5.44

1.11

0.268

Observer Assessment of Alertness/Sedation score (OAA/S)

2.44 ± 0.50

2.53 ± 0.51

2.42 ± 0.50

0.826

0.411

Pain score

(VAS score)

1.91 ± 1.00

1.91 ± 1.02

1.93 ± 0.96

Preoperative quiet breathing diaphragmatic excursion (cm)

2.17 ± 0.30

2.16 ± 0.30

2.22 ± 0.33

0.789

0.432

Preoperative deep breathing diaphragmatic excursion (cm)

3.96 ± 0.61

3.95 ± 0.64

4.04 ± 0.44

0.592

0.555

Quiet breathing diaphragmatic excursion during extubation (cm)

1.84 ± 0.15

1.86 ± 0.15

1.76 ± 0.13

2.723

0.008

Deep breathing diaphragmatic excursion during extubation (cm)

3.13 ± 0.49

3.23 ± 0.47

2.65 ± 0.28

5.254

<0.001

Preoperative quiet breathing diaphragmatic thickening fraction (%)

33.32 ± 7.85

33.93 ± 8.07

30.42 ± 6.04

1.791

0.076

Preoperative deep breathing diaphragmatic thickening fraction (%)

83.25 ± 13.77

83.08 ± 14.63

84.05 ± 8.80

0.279

0.781

Quiet breathing diaphragmatic thickening fraction during extubation (%)

27.90 ± 10.62

28.34 ± 11.01

25.79 ± 8.45

0.953

0.343

Deep breathing diaphragmatic thickening fraction during extubation (%)

66.62 ± 13.79

69.17 ± 13.31

54.58 ± 8.90

4.557

<0.001