A 55-year-old man presents with fatigue, pruritus, and jaundice. Laboratory tests reveal elevated bilirubin and alkaline phosphatase levels. Imaging shows dilated intrahepatic bile ducts and a normal common bile duct. What is the most likely diagnosis?

Correct Answer: A

Rationale: The most likely diagnosis is A: Primary biliary cirrhosis. This condition typically presents with fatigue, pruritus, jaundice, elevated bilirubin, and alkaline phosphatase levels. The imaging findings of dilated intrahepatic bile ducts and a normal common bile duct are classic for primary biliary cirrhosis. It is an autoimmune disease affecting the bile ducts. Why other choices are incorrect: B: Primary sclerosing cholangitis presents with strictures and beading of bile ducts, not dilatation. C: Gallstones usually cause common bile duct obstruction, not intrahepatic dilation. D: Pancreatic cancer would typically present with different imaging findings and may involve the pancreatic duct, not just intrahepatic bile ducts.

Correct Answer: C

Rationale: The most likely diagnosis is Crohn's disease (Choice C). This is supported by the symptoms of abdominal pain, diarrhea, weight loss, mouth ulcers, and perianal fistula, which are characteristic of Crohn's disease. These symptoms are not typically seen in irritable bowel syndrome (Choice B) or diverticulitis (Choice D). While ulcerative colitis (Choice A) may also present with similar symptoms, the presence of perianal fistula and mouth ulcers is more indicative of Crohn's disease. Crohn's disease is a chronic inflammatory condition that can affect any part of the gastrointestinal tract, leading to the diverse range of symptoms seen in this patient.

Correct Answer: D

Rationale: The correct answer is D: Place the tablet under your tongue. Nitroglycerin is a vasodilator used to relieve chest pain in patients with MI. Placing the tablet under the tongue allows for rapid absorption through the oral mucosa, providing quick relief. Taking it with food (A) may delay absorption. Swallowing the tablet whole (B) would result in slower absorption through the GI tract. Taking it at bedtime (C) is not necessary for immediate relief of chest pain.

Correct Answer: C

Rationale: The correct answer is C, engaging in at least 150 minutes of moderate exercise per week. Regular exercise helps lower blood pressure by strengthening the heart, improving blood flow, and reducing stress. It also helps with weight management, which is crucial for hypertension. Choice A is incorrect because saturated fats can increase the risk of heart disease and worsen hypertension. Choice B is incorrect because excessive alcohol intake can raise blood pressure. Choice D is incorrect because excessive salt intake can lead to high blood pressure. Overall, regular exercise is a key lifestyle modification for managing hypertension.

Correct Answer: B

Rationale: The correct answer is B: Blood pressure of 180/90 mm Hg. High blood pressure can worsen kidney function and increase the risk of cardiovascular complications during hemodialysis. The nurse should report this finding to the healthcare provider for prompt management. A: Serum potassium of 5.5 mEq/L is slightly elevated but not an immediate concern before hemodialysis. C: Heart rate of 80 beats per minute is within normal range and not a priority assessment for pre-dialysis. D: Serum sodium of 140 mEq/L is within normal limits and does not require immediate attention before hemodialysis.