Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(Top) Baseline oropharyngeal pH tracing with mealtimes excluded for an asymptomatic healthy volunteer. (Bottom) At baseline, the upright RYAN score is abnormal (11.58) due to a 9-minute post-supine lag period where the oropharyngeal pH remains below 5.5 in the upright position. When this 9-minute post-supine lag period is accounted for, the upright RYAN score normalizes to 2.12.
