Correct Answer: B

Rationale: The correct answer is B: Presence of flatus. This indicates normal gastrointestinal function post-bowel resection. Flatus production signifies peristalsis and passage of gas through the intestines, indicating that the bowels are working. A, firm abdomen, may indicate distention or ileus, not normal function. C, excessive thirst, is unrelated to bowel function. D, absent bowel sounds, may indicate ileus or bowel obstruction, not normal function.

Correct Answer: C

Rationale: The correct answer is C: Elevate the head of bed. Elevating the head of the bed helps improve lung expansion and ventilation, making it easier for patients with impaired respiratory function to breathe. This position also helps prevent aspiration and reduces the risk of respiratory complications. Antibiotics (choice A) are not indicated unless specifically prescribed for an infection. Bedrest (choice B) can lead to deconditioning and worsen respiratory function. Suctioning (choice D) every 4 hours is not necessary unless there is excessive secretions present.

Correct Answer: B

Rationale: The correct answer is B: Suppressor T cells. Suppressor T cells regulate the immune response by inhibiting the activity of other immune cells to prevent overreaction and maintain immune balance. They play a crucial role in preventing autoimmune diseases and excessive inflammation. Plasma cells (A) produce antibodies, Helper T cells (C) assist in activating other immune cells, and B lymphocytes (D) are involved in antibody production. Suppressor T cells specifically have the function of shutting down immune responses, making them the immune system’s shutoff mechanism.

Correct Answer: B

Rationale: The correct answer is B: Presence of flatus. This indicates normal gastrointestinal function post-bowel resection. Flatus production signifies peristalsis and passage of gas through the intestines, indicating that the bowels are working. A, firm abdomen, may indicate distention or ileus, not normal function. C, excessive thirst, is unrelated to bowel function. D, absent bowel sounds, may indicate ileus or bowel obstruction, not normal function.

Correct Answer: B

Rationale: The correct answer is B: decrease resident intestinal flora. Lactulose is a synthetic sugar that is not absorbed in the intestine and is used to decrease ammonia levels in patients with hepatic encephalopathy by promoting the growth of beneficial gut bacteria that help metabolize ammonia. This action helps reduce the toxic effects of ammonia on the brain. A: prevent constipation - Lactulose may help with constipation, but its primary action in this scenario is to decrease resident intestinal flora. C: increase intestinal peristalsis - Lactulose does not directly increase peristalsis. D: prevent portal hypertension - Lactulose does not have a direct effect on preventing portal hypertension.