Table 1.

Modified Clavien classification

Grade	Definition
1	Any deviation from the normal postoperative course without the need for pharmacologic/surgical/radiological intervention
2	Requiring pharmacologic treatment with drugs other than such allowed for grade 1 complication
3A	Complications needing surgical, endoscopic or radiologic intervention under local anesthesia
3B	Complications needing surgical, endoscopic or radiologic intervention under general anesthesia
4A	Life threatening conditions with single organ dysfunction
4B	Life threatening conditions with multi organ dysfunction
5	Death