§ 868.1750. Pressure plethysmograph.
36 words·~1 min read·
/us/cfr/t21/s§ 868.1750·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)Identification. A pressure plethysmograph is a device used to determine a patient's airway resistance and lung volumes by measuring pressure changes while the patient is in an airtight box.
(b)Classification. Class II (performance standards).