Clinical evaluation of new office spirometer
L. D. Hudson, T. L. Petty, B. Baidwan and K. Stark
The accuracy of a simple, pneumatic, direct-recording spirometer suitable
for office use was evaluated by comparing spirometry on a water-sealed,
13.5-liter, water-filled spirometer for 120 patients. Good correlation
between the two spirometers was seen through a wide range of values for
forced vital capacity, forced expiratory volume in one second, and forced
expiratory flow during 25% to 75% of forced vital capacity, with
coefficients of correlation being .988, .988, and .948, respectively. All
correlations were significant. The pneumatic spirometer is accurate, simple
to operate, and suitable for spirometry in the office and clinic.
