Table 1 Patient characteristics and operative results (n=31)

Male/female (n)

25/6

Age (years)

69 (63-78)

Height (cm)

164.7±7.7

Body weight (kg)

65.8±10.9

Ideal body weight (kg)

59.8±5.5

Body mass index

24.2±3.0

Body surface area (m²)

1.72±0.17

ASA physical status I/II/III (n)

1/23/7

 Hypertension

10

 Diabetes

6

 Dyslipidemia

3

 Atrial fibrillation

2

 Dialysis

1

 Coronary artery disease

1

Ex-/current smoker (n)

15

Brinkman index

300 (0-700)

VC (L)

3.4±0.8

%VC (% predicted)

97.5±11.6

FVC (L)

3.3±0.8

%FVC (% predicted)

98.4±12.1

FEV1.0 (L)

2.5±0.6

%FEV1.0 (% predicted)

76.2 (71.6-79.8)

FEV1.0/FVC (%)

73.0±11.0

FeNO (ppb)^a

17 (15-21)

Preoperative R5 (cmH₂O/L/second)

2.6±0.9

Postoperative R5 (cmH₂O/L/second)

2.8±0.9

Operation time (minutes)

31 (21-55)

Anesthesia time (minutes)

79 (65-93)

Fluid infusion (mL)

400 (250-550)

Internal diameter of tracheal tube 7/7.5/8 mm (n)

6/1/24