9: Peds Pyloric Stenosis Flashcards
1
Q
T/F Gastric peristaltic waves may be visible prior to vomiting.
A
True
2
Q
What is the gold standard for diagnosis?
A
- U/S
- Upper GI or endoscopy can be used if diagnosis unclear
3
Q
What is the etiology of pyloric stenosis (or infantile hypertrophic pyloric stenosis)?
A
Unknown
4
Q
Who is most commonly affected?
A
First born white males, but can occur in any infant
5
Q
What is the cause of pyloric stenosis?
A
- Hypertrophy and hyperplasia of the muscular layers of the pylorus, causing a functional gastric outlet obstruction.
- It is the most common cause of intestinal obstruction in infants.
6
Q
T/F Palpable “olive” is best felt just prior to vomiting.
A
False. Best felt after baby has vomited and is calm.
7
Q
What is treatment for pyloric stenosis?
A
- Electrolyte and fluid correction
- Surgery to correct (pyloromyotomy)
8
Q
What is the “olive” in pyloric stenosis?
A
Lateral edge of rectus abdominus muscle in RUQ
9
Q
What is the clinical presentation of pyloric stenosis?
A
- Non-bilious vomiting and regurgitation (70% projectile).
- Still hungry after vomiting.
- Vomiting occurs post feed.
- Dehydration, malnutrition, and jaundice may develop.
- 1-2 cm “olive” palpated along pyloris.
10
Q
What is the average age of onset for pyloric stenosis?
A
3 weeks (1-18 weeks)
