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.
This cartoon shows how blood overflow in the lower areas of the lung might explain the platypnea orthodoxia occasionally seen in COVID-19 patients. This process resembles the one seen in patients affected by HPS. HPS: hepatopulmonary syndrome.
