USMLE Step 3 Review exam 2024 with 100% correct answers

Tx of IBS - correct answer Best initial therapy: *Fiber* Antispasmodic/Anticholingergics: dicyclomine, Hyoscyamine Second line- TCAs (amitryptiline) CCS, What test should you order for IBS? - correct answer 1. Stool: stool guiac, leukocytes, cultures, ova & parasites. 2. Colonoscopy 3. Abdominal CT scan Umbilical hernia in newborns is associated with? - correct answer Congenital hypothyroidism Screen with TSH (you should screen for TSH anyway) What three metabolic conditions do most states require newborn screening? - correct answer 1. Phenylketonuria 2. Galactosemia 3. Hypothyroidism Antibiotics of choice in IBD - correct answer Ciprofloxacin + Metrodinazole (they have some kind of immune modulatory effect) Middle-aged woman with itching and xanthelesmas = primary biliary cirrhosis. What is the best initial test, and the most accurate test? - correct answer Initial: elevated ALP, normal bilirubin Accurate: antimitochondrial antibodies Liver Biops