A nurse is educating a group of students about the pathophysiology of appendicitis. What should the nurse emphasize as a potential consequence of untreated appendicitis?

A) Correct. Rebound tenderness in the lower right abdomen is a hallmark symptom that often occurs in the later stages of appendicitis. It indicates peritoneal irritation and is a sign of potential appendix perforation.

B) Incorrect. While severe, constant abdominal pain in the lower right quadrant is a characteristic symptom of appendicitis, it may occur in both early and later stages.

C) Incorrect. A low-grade fever and elevated white blood cell count are indicative of an inflammatory response and may occur in the later stages of appendicitis, but they are not as specific as rebound tenderness.

D) Incorrect. Diarrhea and frequent bowel movements are not typically associated with appendicitis. Constipation is a more common gastrointestinal symptom in this condition.

A) Incorrect. While ultrasound can provide images of the appendix and surrounding structures, the level of detail may be limited compared to a CT scan.

B) Incorrect. A CT scan is considered the most definitive test for diagnosing appendicitis, not ultrasound.

C) Correct. Ultrasound is particularly effective in obese individuals because it does not rely on radiation and can provide clear images of the appendix in individuals with higher body mass index.

D) Incorrect. Ultrasound does not allow for direct visualization of the inside of the appendix. It provides external images of the appendix and surrounding area.