Root causes and outcomes of postoperative pulmonary complications after abdominal surgery: a retrospective observational cohort study

Table 4 PPCs, 30-day mortality and Severity Indices

Patients undergoing AS	Patients number (%)	30-day mortality	APACHE II (mean)	SAPS II (mean)
OP	60 (100)	21.7%	22.8 ± 8.1^*	50.7 ± 17.9^*
PPCs ≤48 h	36 (60)	27.8% (10 patients)	23.0 ± 6.5^**	49.0 ± 17.3^**
PPCs > 48 h	24 (40)	12.5% (3 patients)	22.5 ± 10.2^**	53.2 ± 18.9^**

APACHE Acute Physiology, Age, Chronic Health Evaluation, AS abdominal surgery, OP operated patients, PPCs postoperative pulmonary complications, SAPS Simplified Acute Physiology Score; * (APACHE: p = 0.829; SAPS: p = 0.378). ** statistically not significant

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