Janice is a 32-year-old female who presents for evaluation of abdominal pain. She has no significant medical or surgical history and denies any history of ulcers, reflux, or gastritis. However, she is now in significant pain and is afraid something is really wrong. She describes what started out as a dull discomfort in the upper part of her stomach a few hours ago but has now become more profound and centered on the right side just under her ribcage. She has not vomited but says she feels nauseous. Physical exam reveals normal vital signs except for a pulse of 117 bpm. She is clearly uncomfortable, and palpation of the abdomen reveals tenderness with deep palpation of the right upper quadrant. The AGACNP orders which imaging study to investigate the likely cause?
Correct Answer: D
Rationale: The correct answer is D: A HIDA scan. A HIDA scan is the most appropriate imaging study for investigating the likely cause in this case because the patient's symptoms (abdominal pain centered on the right side just under the ribcage, tenderness in the right upper quadrant) are suggestive of a possible gallbladder issue, such as cholecystitis or biliary colic. A HIDA scan is specifically used to evaluate the gallbladder and biliary system.
A: Abdominal radiographs would not provide detailed information about the gallbladder or biliary system, and are not the best choice in this scenario.
B: A CT scan of the abdomen with contrast can be helpful in some situations, but it may not provide the specific information needed to evaluate the gallbladder and biliary system.
C: Right upper quadrant ultrasound is a good initial imaging study for evaluating gallbladder disease, but a HIDA scan is more specific for functional assessment of