What is IHPS?
Idiopathic hypertrophic pyloric stenosis - hypertrophy of pyloric muscle causing gastric outlet obstruction
What is the classic symptom of IHPS?
Non-bilious projectile vomiting in 2–8 week old neonate
What is the classic metabolic abnormality in IHPS?
Hypochloremic, hypokalemic metabolic alkalosis
What is the diagnostic imaging of choice in IHPS?
Pelvi-abdominal ultrasound
What are diagnostic US criteria for IHPS?
Muscle thickness ≥4 mm, pyloric length ≥16 mm
What is the definitive treatment for IHPS?
Ramstedt’s pyloromyotomy
What is the most important step before surgery in IHPS?
Adequate resuscitation to correct electrolyte abnormalities