Fig. 1.
Oxygen saturation (blue) and heart rate (pink) traces in a patient with obstructive sleep apnoea. (a) Preoperatively. (b) Postoperatively during patient-controlled morphine analgesia.
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.