Which of the following devices can a patient with asthma use in the home to monitor daily varia-tions in Raw?
a. Thermal flowmeter c. Screen pneumo-tachograph
b. Fleisch pneumo-tachograph d. Vortex ultrasonic flowmeter
ANS: C
Screen pneumotachographs are inexpensive, disposable, operate at ambient temperature, and do not require a heating element. The Fleisch pneumotachograph is affected by turbulent airflow, making accurate peak flow readings difficult.
Health Professions
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