Table 3.

The risk predictors of the postoperative acute exacerbation.

Author	Published year	Risk predictors of postoperative AEIPF
Kumar et al. [13]	2003	Low %DLco (AEIPF+ versus AEIPF−; 48% versus 58%), Low %K CO (58% versus 70%), High CPI (44 versus 33)
Koizumi et al. [15]	2004	PS > 2, CRP > 2 mg/dL, LDH > 400 IU/L,%TLC < 95%
Okamoto et al. [16]	2004	%VC < 80, LowDLco (value is not described)
Kushibe et al. [17]	2007	%VC < 80%
Watanabe et al. [18]	2008	None
Shintani et al. [20]	2010	%VC (<80.6%) and LDH (≥241 IU/L)

K _CO: levels of carbon monoxide diffusion capacity corrected for alveolar volume;

CPI: composite physiological index; PS: performance status; TLC: total lung capacity;

DLCO: diffusing capacity of the lung for carbon monoxide.