§868.1750. Pressure plethysmograph.
21 C.F.R. § 868.1750
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.
Classification. Class II (performance standards).
Notes, amendments, and revision history
Authority
Authority: 21 U.S.C. 351, 360, 360c, 360e, 360j, 360 l, 371.
Source
Source: 47 FR 31142, July 16, 1982, unless otherwise noted.