Final answer:
Anesthetized and critically ill patients cannot regulate their own body temperature, leaving them at risk for hyperthermia.
Step-by-step explanation:
The true statement in this question is option B: Anesthetized and critically ill patients cannot regulate their own body temperature, leaving them at risk for hyperthermia.
When patients are intubated and under anesthesia, their ability to regulate their body temperature is compromised. This is because the anesthesia affects the muscles necessary for breathing and the movement of the tongue, which can partially or fully block the airway.
As a result, these patients are at risk for hyperthermia, which is an abnormally high body temperature. To avoid complications, the safest procedure for these patients is endotracheal intubation, which involves placing a tube into the trachea to maintain an open airway and seal it off from the oropharynx.