Purpose: To predict the need for transfusion in patients having surgery for cancer of the head and neck based on preoperative findings.			Citations with documentation. 05.01.04	Sriram & Svirbely 1999
conversion	enter
hemoglobin in g/L		g/L equals	0	g/dL
data	enter
Are you planning cancer surgery for a patient with a tumor of the head or neck? (Y or N)		:-):-):-)
age of the patient in years		years
gender of patient (enter M or F)		:-):-):-)
clinical tumor stage (enter T1, T2, T3, or T4)		:-):-):-)		100
Is a flap to be used? (Y or N)		:-):-):-)		10
preoperative hemoglobin in g/dL		g/dL		1
calculate	result
data complete?	Yes
evaluation appropriate?	Yes	:-):-):-)
rate of transfusion expected	65%
preoperative blood orders	type and crossmatch
If the patient has autologous units, should additional allogenic units be crossmatched?	Yes	:-):-):-)
age	male	female