“…In each case of suspected transfusion reaction, the clinician completed a âReport of Suspected Transfusion Reactionâ form that included patient information, the type and unique identifier of the blood product, times of transfusion and reaction, vital signs, symptoms of the suspected reaction, any intervention required, and outcome. These forms were submitted to the blood bank, whose medical director reviewed the form, the results of laboratory studies, and, if necessary, other information from the medical record to arrive at an interpretation of the event based on terminology in the American Association of Blood Banks (AABB) Technical Manual (Brecher, 2002) and other published studies of acute transfusion reactions (Buck et al , 1987; Heddle et al , 1993; Riccardi et al , 1997; Heddle, 1999; Perrotta & Snyder, 2001; Wang et al , 2002; Domen & Hoeltge, 2003). Specifically, febrile reactions were defined as a new temperature â„38°C or an increase in temperature of â„1°C above baseline that developed during or within 3 hours of completion of a transfusion in which another cause of fever, such as sepsis or haemolysis, was excluded.…”