Hot saline is prepared by first placing 2 litres of sterile normal saline (0.9%) into a basin (IntraTemp Therma BasinTM) that is wrapped in a sterile disposable drape (IntraTemp Therma Basin DrapeTM). The basin is then placed in a medical grade warmer (IntraTemp Fluid Warming SystemTM). The warmer is set to heat the saline up to a temperature of 50 degrees Celsius. An external digital thermometer is placed in the saline at all times to ensure that the temperature is between 45-50 degrees.