Bleeding during surgery 0.0 / 5 ? HistoryMedicine through time (OCR History A)GCSEOCR Created by: emmacramCreated on: 07-06-15 18:08 How problem was overcome Blood circulates rapidly (Harvey's discovery) , if major blood vessel is cut can easily bleed to death. Blood transfusions ometimes worked and sometimes blood clogged and they didn't know why. 1900, Karl Landsteiner discovered blood groups and found out that certain groups couldn't be mixed together or they would clog blood vessels. WW1 sodium citrate used to stop blood clotting when in contact with air, made it easier to store blood. Blood transfusions could replace blood when lost so people didn't die during surgery. 1 of 1
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