Pyloric Stenosis Information


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Home :: Diseases P :: Pyloric Stenosis

Pyloric Stenosis Information

What is Pyloric Stenosis ?

Pyloric Stenosis is an abnormality of the pyloric musculature (hypertrophy) causing gastric outlet obstruction in early infancy. The incidence is 3 per 1000 live births. The etiology of Pyloric Stenosis is unknown, but pylorospasm to formula protein cause a work hypertrophy of the muscle. Diagnostic characteristics are: non-bilious projectile vomiting classically 3-6 weeks of age, palpable pyloric muscle "olive", contrast studies are not necessary when the pyloric muscle is palpated, enlarged width and length in ultrasonography. It occurs more commonly in boys than in girls and is rare in patients older than 6 months.

Signs and Symptoms 

  • Vomiting
  • Changes in stools
  • Infant appears constantly hungry
  • Failure to gain weight and lethargy
  • Dehydration (becoming more profound with the severity of the vomiting)
  • Abdominal fullness prematurely after meals

Causes of Pyloric Stenosis

  • thickening of the muscles of the pylorus. It occurs more commonly in boys than in girls and is rare in patients older than 6 months.

Treatment and Cure of Pyloric Stenosis

The treatment consist in correction of hypochloremic alkalosis and state of dehydration and performing a Fredet-Ramstedt modified pyloromyotomy. Post-operative management consist of: 50% will have one to several episodes of vomiting, usually can feed and go home in 24-36 hours, initial feeds start 8-12 hours after surgery. Treatment for pyloric stenosis involves surgery to split the overdeveloped muscles of the pylorus is the treatment for this disorder. Rehydration with intravenous fluids usually takes place prior to surgery.

Pyloric stenosis should not recur after a complete pyloromyotomy. If your baby continues to display symptoms weeks after the surgery, it may suggest another medical problem, such as inflammation of the stomach (gastritis) or GERD - or it could indicate that the initial pyloromyotomy was incomplete.

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Disclaimer: All information on is for educational purposes only. It is not a substitute for professional medical advice. For specific medical advice, diagnoses, and treatment, please consult your doctor.