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acid-base disorders

Practice targeted AMC-style multiple-choice questions on acid-base disorders.

Related Topics

electrolyte imbalanceinfantpediatricsvomitingabdominal ultrasoundgastroenterologyimaging
Hypertrophic pyloric stenosis
Image by Adityagupta95 — CC0 1.0 · Source

A 3-week-old male presents with non-bilious projectile vomiting after each feed. He is otherwise well-appearing. An abdominal X-ray is unremarkable. An upper GI contrast study is performed, and relevant images are shown. What is the MOST likely acid-base disturbance in this patient?

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Hypertrophic pyloric stenosis
Image by Adityagupta95 — CC0 1.0 · Source

A 4-week-old male presents with non-bilious emesis. An upper GI series is performed (image shown). What acid-base abnormality is MOST likely?

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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes — CC BY-SA 4.0 · Source

A 6-week-old male presents with persistent non-bilious vomiting after feeding. He appears hungry and has lost weight since birth. Examination reveals visible peristaltic waves across the abdomen. An abdominal ultrasound is performed, as shown. What is the most likely acid-base disturbance seen in this patient?

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Pyloric stenosis as seen on ultrasound in a 6 week old
Image by Dr Laughlin Dawes — CC BY-SA 4.0 · Source

A 5-week-old male presents with non-bilious projectile vomiting. An ultrasound is performed (shown). What acid-base disturbance is MOST likely?

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