Created at 7:42 p.m. May, 18, 2026
Author: paulsheils
Related Note: 1556622691399 1
Rationale for change

× 20. A 3-day-old male newborn is evaluated in the hospital nursery because of a 2-hour history of episodes of vomiting green material. He was well prior to the onset of these episodes. He was born at 41 weeks' gestation following an uncomplicated pregnancy and cesarean delivery because of failure to progress. He appears listless. He is 50cm (19.7 in; 50th percentile) long and weighs 3628g (8 Ib; 50th percentile). His temperature is 36.7°C (98.0°F), pulse is 170/min, respirations are 50/min, and blood pressure is 70/40 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 98%.
Capillary refill time is 2 seconds. The abdomen is nondistended, and the patient cries when it is palpated. The remainder of the examination discloses no abnormalities. Which of the following is most likely to establish the diagnosis?
A) Barium enema
B) Esophagogastroduodenoscopy
C) MRI of the abdomen
• D) Upper gastrointestinal series
• E) X-ray of the abdomen
Correct Answer: D.

Source: Other - NBME Form 11

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#AK_Step2_v12::#SketchyPeds::06_Gastroenterology_&_Hepatobiliary::01_GI_Disease_in_Infants_and_Toddlers::01_Life-Threatening_Causes_of_Abdominal_Pain_in_the_Neonate/Infant_DDx #AK_Step2_v12::#SketchyPeds::06_Gastroenterology_&_Hepatobiliary::01_GI_Disease_in_Infants_and_Toddlers::02_Vomiting_in_Neonates,_Infants,_and_Toddlers_DDx #AK_Other::#AK_Original_Decks::Step_2::Cheesy_Dorian_(M3) #AK_Other::Only_Step_2 #AK_Step2_v12::#Subjects::Gastroenterology::*Bilious_Vomiting_DDx #AK_Step2_v12::#B&B::12_Pediatrics::03_Other::04_Congenital_Gastroenterology_I #AK_Step2_v12::#FirstAid::12_Pediatrics::05_Pediatric_Gastrointestinal_Disease::03_Malrotation_with_Volvulus #AK_Step2_v12::!Shelf::Peds::no_dupes::only_step2 #AK_Step2_v12::#OME::Clinical::06_Surgery::03_Surgical_Subspecialties::01_Peds_First_Day #AK_Step2_v12::Original_decks::Dorian::peds::uw::gi #AK_Step2_v12::#OME::06_Surgery::03_Surgical_Subspecialties::01_Peds_First_Day #AK_Step2_v12::!Shelf::#Cards_AnKing_Did::3peds #AK_Step2_v12::#SketchyPeds::06_Gastroenterology_&_Hepatobiliary::01_GI_Disease_in_Infants_and_Toddlers::05_Malrotation_and_Volvulus #AK_Other::AnKing_Image::Mujeeb::Neonatal_Bilious_Vomiting #AK_Step2_v12::#NBME::Form11::Section_1 #AK_Step2_v12::#SketchyPeds::06_Gastroenterology_&_Hepatobiliary::01_GI_Disease_in_Infants_and_Toddlers::10_Intestinal_Atresias #AK_Step2_v12::#SketchyPeds::06_Gastroenterology_&_Hepatobiliary::04_Retired_Lessons::01_Acute_Abdominal_Pain_DDx_Life_Threatening_Causes_[OLD_VERSION] #AK_Other::AnKing_Image::!Subjects::Gastroenterology::Neonatal_Bilious_Vomiting #AK_Step2_v12::#Resources_by_rotation::Peds::uworld::gi::gi_nutrition_dorian