The Joint Commission's policy requires that a patient—and sometimes the family—be informed of sentinel events. Which of the following offers an example of a sentinel event?
A. A patient discovers Medicare fraud involving his treatment.
B. A patient falls on her head because the bed's siderails were not raised.
C. An elderly patient has a stroke during minor surgery.
D. A patient yells at her nurses because she imagines that they are trying to harm her.