Postoperative Heme Oxygenase Induction and Carbon Monoxide Production as a Novel Method to Assess Hepatic Regeneration and Predict Hepatic Related Morbidity After Partial Hepatectomy

Monitor CO in exhaled air of patients before liver resection, at 4 hours and 24 hours after PH

Monitor carboxyhemoglobin(COHb) in the arterial blood gas of patients before liver resection at 4 hours and 24 hours after PH

Analyze the relationship between CO production and the extent of hepatic resection assessed by computed scans liver volumetric study at one and three months after PH, size and weight of the resected specimen and operative report