Enter your email to get your 85% OFF code and unlock the full USMLE question bank on the app.
Free notes, MCQs, tables & flowcharts for USMLE Step 3 Pediatrics
A 42-year-old woman presents to the emergency department in active labor. She has had no prenatal care and is unsure of the gestational age. Labor progresses rapidly and spontaneous vaginal delivery of a baby boy occurs 3 hours after presentation. On initial exam, the child is 1.9 kg (4.2 lb) with a small head and jaw. A sac-like structure containing intestine, as can be seen in the picture, protrudes from the abdominal wall. What complication is closely associated with this presentation?
ALack of abdominal wall muscles
BDehydration and necrosis of bowel
CDuodenal atresia
DTwisting of the bowel around itself
ECardiac defect
A 5-year-old boy with Down syndrome presents with his mother. The patient’s mother says that he isn’t playing or eating as much as he used to and seems lethargic. Expected developmental delays are present and stable. Physical examination reveals dry mucous membranes and abdominal distention with no tenderness to palpation. An abdominal radiograph is shown in the image below. Which of the following is the most likely diagnosis in this patient?
AUlcerative colitis
BAnal atresia
CHirschsprung's disease
DPyloric stenosis
EIncarcerated hernia
A new mother expresses her concerns because her 1-day-old newborn has been having feeding difficulties. The child vomits after every feeding and has had a continuous cough since shortly after birth. The mother denies any greenish coloration of the vomit and says that it is only composed of whitish milk that the baby just had. The child exhibits these coughing spells during the exam, at which time the physician notices the child’s skin becoming cyanotic. The mother states that the child was born vaginally with no complications, although her records show that she had polyhydramnios during her last ultrasound before the delivery. Which of the following is the most likely cause of the patient’s symptoms?
AFailure of recanalization of duodenum
BObstruction due to failure of rotation of pancreatic tissue
CHypertrophy of the pyloric sphincter
DFailure of neural crest cells to migrate into the myenteric plexus
EDefective formation of the esophagus with tracheoesophageal connection
+ 7 more in the PDF
Browse all chapters