
I attended a 6-hour brain surgery today as an anaesthesia resident.
As the neurosurgeons opened the skull with a saw and operated for 6 hours, the patient lost about 1 litre of blood (humans have only around 5 litres total).
To maintain blood volume and pressure, we administered 4 units of packed red blood cells, 3 units of fresh frozen plasma, 4 units of Ringer’s lactate, 2 units of Plasmalyte, and 1 unit of hydroxyethyl starch.
That’s about 6 litres of fluid in a 6-hour surgery. Anaesthesiologists are no less important than surgeons.
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