Table 1 Inflammation-based prognostic scores and postoperative pulmonary risk scoring system.

Parameters

Score

CONUT

1. Albumin

 ≥ 3.50 (0)

3.00–3.49 (2)

2.50–2.99 (4)

 < 2.50 (6)

2. Total lymphocyte count, /mL

 > 1,600 (0)

1,200–1599 (1)

800–1,199 (2)

 < 800 (3)

3. Total cholesterol, mg/dL

 > 180 (0)

140–180 (1)

100–139 (2)

 < 100 (3)

Assessment (1 + 2 + 3)

Normal (0–1)

Mild (2–4)

Moderate (5–8)

Severe (9–12)

PNI

Calculation

Score

Albumin (g/L) + 5 × total lymphocyte count/mL ≥ 45

0

Albumin (g/L) + 5 × total lymphocyte count/mL < 45

1

GPS

Calculation

Score

C-reactive protein ≤ 10 mg/L and albumin ≥ 35 g/L

0

C-reactive protein ≤ 10 mg/L and albumin < 35 g/L

1

C-reactive protein > 10 mg/L and albumin ≥ 35 g/L

1

C-reactive protein > 10 mg/L and albumin < 35 g/L

2

ARISCAT*

Risk factors

Risk score

Age, year

 ≤ 50 (0)

51–80 (3)

> 80 (16)

Preoperative SpO₂, %

 ≥ 96 (0)

91–95 (8)

≤ 90 (24)

Respiratory infection in last month

No (0)

–

Yes (17)

Preoperative Hb ≤ 10 g/dL

No (0)

–

Yes (11)

Surgical incision site

Peripheral (0)

Upper abdominal (15)

Intrathoracic (24)

Duration of surgery, hours

< 2 (0)

2–3 (16)

> 3 (23)

Emergency procedure

No (0)

–

Yes (8)

Risk class*

No. of points in risk score (pulmonary complication rate)

Low

< 26 (1.6%)

Intermediate

26–44 (13.3%)

High

< 44 (42.1%)