Step 1

Anatomy 19

A 4-week-old male infant is brought to the emergency department by his mother for a concern about forceful vomiting after each feed for the past 2 days. The prenatal course and delivery were unremarkable. His heart rate is 180 beats per minute and a temperature of 99°F (36.2°C). Physical examination shows depressed fontanelles, dry mucous membranes, poor skin turgor, and lethargy. Blood tests show the following:

Serum sodium: 137mEq/L
Serum chloride: 90 mEq/L
Serum potassium: 3.2mEq/L

Ultrasound of the abdomen confirms the diagnosis of pyloric stenosis. Intravenous fluids are started and surgery is planned. Which of the following is the blood supply of this region of the stomach?

  • A) Gastroduodenal artery
  • B) Left gastric artery
  • C) Right gastric artery
  • D) Superior mesenteric artery
  • E) Superior pancreaticoduodenal artery


Husban Hamil


Dr. Ted O'Connell