Pyrexia due to wound infection commonly occursafter-
**Core Concept**
Pyrexia due to wound infection is often associated with the body's inflammatory response to bacterial invasion. This process involves the activation of immune cells, the release of cytokines, and the subsequent increase in body temperature.
**Why the Correct Answer is Right**
The correct answer is related to the timing of the inflammatory response. After a wound infection, the body initially responds with an acute inflammatory phase, which typically occurs within 24-48 hours after the infection. During this phase, the immune system attempts to clear the infection by increasing blood flow to the affected area, causing the characteristic signs of inflammation, including redness, swelling, warmth, and pyrexia.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the initial response to wound infection is not typically delayed beyond 72 hours. The body's immune response is immediate, and pyrexia usually occurs within the first 2-3 days after infection.
**Option B:** This option is incorrect because the peak inflammatory response usually occurs within 48-72 hours after wound infection, not immediately after the infection. The correct answer is related to the timing of the inflammatory response, which is more closely associated with the 24-48 hour mark.
**Option C:** This option is incorrect because the resolution phase of wound healing, during which the body starts to repair and rebuild tissue, typically occurs after the inflammatory phase has subsided. Pyrexia due to wound infection is more closely associated with the initial inflammatory response.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that pyrexia due to wound infection often occurs within 24-48 hours after the infection, making it a crucial time for early diagnosis and treatment.
**Correct Answer: B.**