Purpose: To predict the spirometric values expected for age and gender, then compare these to the actual measured values.			Citations with documentation. 08.01.09	Sriram & Svirbely 1997
conversion	enter
height in centimeters		cm equals	69.29	inches
height in feet with		feet and
residual height in inches		inches equals	0.00	inches
data	enter
Are you evaluating a patient for evidence of pulmonary obstruction or restriction? (Y or N)		:-):-):-)
patient's age in years		years
patient's height in inches		inches
patient's gender (enter M or F)		:-):-):-)
forced vital capacity (FVC) measured, in liters		liters
forced expiratory volume in 1 second (FEV1) measured, in liters		liters
FEF(25-75%) measured, in liters per second		liters per second
vital capacity (VC) measured, in liters		liters
total lung capacity (TLC) measured, in liters		liters
calculations	results
data complete?	Yes
FEV1-to-FVC measured	92%
predicted for age and height
residual volume (RV) [Goldman]	1.53	liters
forced vital capacity (FVC) [Morris]	4.90	liters
FVC [Crapo] in liters	4.87	liters
forced expiratory volume in 1 second FEV1 [Morris]	4.01	liters
FEV1 in liters [Crapo]	4.14	liters
forced midexpiratory flow FEF(25-75%) [Morris]	4.49	liters per second
FEF(25-75%) [Crapo]	4.60	liters per second
FEV1-to-FVC from estimated values	81.83%
FEV1-to-FVC [Crapo]	84.90%
predicted vital capacity (VC)	4.90	liters
predicted total lung capacity (TLC)	6.43	liters
measured as % predicted
FVC measured-to-predicted	51%	which indicates moderate obstruction
FEV1 measured-to-predicted	57%	which indicates moderate obstruction
FEF(25-75%) measured-to-predicted	62%	which indicates mild obstruction
FEV1-to-FVC measured-to-predicted	112%	which is normal
VC measured-to-predicted	84%	which is normal
TLC measured-to-predicted	95%	which is normal