Purpose: To predict the likelihood for needing a transfusion following a first-time, elective coronary artery bypass operation using the model of Karkouti et al.			Citations with documentation. 05.01.11	Medal Project 2001. See disclaimer.
conversion	enter
body weight in pounds		lbs equals	0	kilograms
hemoglobin in g/L		g/L equals	0	g/dL
data	enter
Are you evaluating a patient who will be having a first-time, elective coronary artery bypass operation? (Y or N)		:-):-):-)
age of the patient in years		years		1.464
gender of the patient (enter M or F)		:-):-):-)		-0.7064
body weight of the patient in kilograms		kilograms		-3.846
pre-operative hemoglobin in g/dL		g/dL		-10.4763
calculate	result
data complete?	Yes
evaluation appropriate?	Yes	:-):-):-)
value for X	-1.2458
probability for transfusion	22%
pre-operative hemoglobin associated with a 20% chance of needing a transfusion	14.3	g/dL
Is the patient's hemoglobin below this value?	Yes	Indicating a good chance of requiring a transfusion.