| A 52 year old male is admitted to hospital after being found collapsed. A history is obtained from relatives of high alcohol intake and recent profuse watery diarrhoea. He has a seizure and is found to have adjusted calcium of 1.95 mmol/L (RR 2.2 - 2.6). Despite three days of calcium infusion his adjusted calcium remains below 2.00 mmol/L in the presence of a PTH of 2.6 pmol/L (RR 1.1 – 6.9). The likely reasons for the abnormalities observed and an appropriate short/long term management plan are discussed below |