Question No 39:
An isothermal lung analog has the following specifications:
5-L glass bottle
2000 g of steel wool
Density of steel wool 5 g/cm3
Volume of connectors and bulb 100 mi-Repeated FRC measurements in the plethysmograph
result in a volume of 5.5 L. Which of the following should a pulmonary function technologist
do?
A. Remove 500 g ofsteel wool from the lung analog
B. Take the plethysmograph out of service
C. Recalculate the BTPS correction
D. Begin a biologic control program
Answer: D
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