Safety of hepatectomy for elderly patients with hepatocellular carcinoma

Table 1 General surgical risk model in hepatectomy

POSSUM/pPOSSUM	E-PASS	APACHE II score
Physiological parameters
Age	Age	Age
Cardiac history	Severe heart disease	Chronic health point
Respiratory history	Severe pulmonary disease	Temperature
Blood pressure	Diabetes mellitus	Blood pressure
Pulse rate	Performance status	Heart rate
Glasgow Coma scale	ASA score	Respiratory rate
Hemoglobin level		Oxygenation
White cell count		Arterial pH
Urea concentration		Serum sodium
Serum sodium level		Serum potassium
Serum potassium level		Serum creatinine
Electrocardiography		Hematocrit
		White blood cell count
		Glasgow Coma Score
Operative parameters
Operative severity	Blood loss/body weight
Multiple procedures	Operation time
Total blood loss	Extent of skin incision
Peritoneal soiling
Presence of malignancy
Mode of surgery