21 C.F.R. § 868.1750 Pressure plethysmograph.
Title 21 - Food and Drugs
(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).
Title 21: Food and Drugs
PART 868—ANESTHESIOLOGY DEVICES
Subpart B—Diagnostic Devices
§ 868.1750 Pressure plethysmograph.
