“…Several investigators (Drummond, 1943;Sharpey-Schafer, 1945;Fullerton and Turner, 1962;Graettinger, Parsons, and Campbell, 1963) have, however, reported heart failure, pulmonary oedema, and deaths in patients with severe anaemia after transfusion of whole blood as well as of packed red cells, either given rapidly or slowly. It is believed that in anaemic patients the functional capacity of the myocardium may be severely impaired and its reserve powers negligible so that any overloading of circulation may then precipitate heart failure (Drummond, 1943). Dangers of circulatory overloading have therefore been stressed and suggestions have been made regarding the amount and the speed of blood transfusion in anaemic patients (Drummond, 1943;Wintrobe, 1961;Britton, 1963).…”