Perioperative calcium, magnesium and phosphorus levels in living donors for liver transplant

We will perform a retrospective analysis of the perioperative data of 44 donors who underwent right lobe hepatectomy for living related liver transplantation in our centre to characterize the incidence of hypocalcemia, hypomagnesemia and hypophosphatemia among this patient population. We will collect the following data: operative time, urine output, total amount of crystalloid and colloid administered, and the values of serum ionized calcium, magnesium and phosphorus at preoperative day and postoperative days 0, 1 and 2. The normal ranges of serum calcium, magnesium and phosphorus will be defined as 2.2-2.5 mmol/L, 0.7-1 mmol/L and 0.8-1.6 mmol/L respectively. the overall duration of observation in participants is 4 days (preoperative day and 3 days in intensive care).