Which of the following is a sign of shock in post-operative patients?

Clammy skin is indeed a sign of shock in post-operative patients. In the context of shock, the body's response to decreased perfusion involves vasoconstriction, which can impair blood flow to the skin, making it feel cool and clammy. This can be particularly significant in a post-operative setting where factors such as blood loss, fluid shifts, or anesthetic effects may contribute to a compromised hemodynamic status.

In post-operative patients experiencing shock, this clinical manifestation can indicate a state of hypoperfusion and inadequate oxygen delivery to tissues. The sympathetic nervous system is activated during shock, leading to the release of stress hormones, which may also facilitate the aforementioned changes in skin condition.

Other signs of shock may include tachycardia, hypotension, altered mental status, and decreased urine output, which should be monitored closely in post-operative care. Recognizing clammy skin as a warning sign allows for timely intervention and management of the patient's condition.