Table 1.

Soft polyvinyl chloride nasopharyngeal airway tube sizes and insertion results.

NPAT∗ sizes (Fr)	Length	Outer diameter	Ability to be inserted	Hours tolerated during sleep	Outcomes from insertion and use during sleep
36	180 mm	12.0 mm	N	NA	Tube kept hitting the inferior turbinate and could not pass.
30	165 mm	10.0 mm	Y	2.5	Tolerated insertion for 2.5 hours and removed tube due to pain. Smartphone app: 0 snores. Bedpartner: 0/10 VAS.
28	155 mm	9.3 mm	Y	0.75	Tolerated insertion for 0.75 hours and removed tube due to pain. Smartphone app: 0 snores. Bedpartner: 0/10 VAS.
26	140 mm	8.7 mm	Y	4.2	Tolerated insertion 4.2 hours and snored during sleep. Smartphone app: 11.4 snores per hour. Bedpartner: 2/10 VAS.
24	130 mm	8.0 mm	Y	NA	Tube was easily inserted, however, was too short to stop simulated snoring, and therefore was not used overnight.

(Note: manufacturer is Teleflex; dimensions are also available at http://www.teleflex.com/.) Fr = French; ^∗NPAT = nasopharyngeal airway tube; NA = not applicable; and VAS = visual analog scale (0 = no snoring, 10 = snoring that could be heard through a closed door and significantly interrupted the bedpartner's sleep).