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Pyloric Stenosis

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Pyloric Stenosis

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  • Dr. Robert W. Sears
  • Updated 2024-08-22
  • Published 2024-03-06

Pyloric Stenosis | Definition, Signs, Symptoms, Treatment

What is pyloric stenosis?

Pyloric stenosis is a condition in infants where the passage from the stomach to the small intestine (pylorus) becomes narrow and blocked due to thickening of the pyloric muscle.

What are the symptoms of pyloric stenosis?

Symptoms include forceful vomiting, dehydration, constipation, weight loss, and changes in eating habits. The vomiting often happens soon after feeding and may be projectile.

How is pyloric stenosis diagnosed?

Diagnosis typically involves a physical exam, medical history analysis, and imaging tests like ultrasound. Doctors may also perform blood tests to check for dehydration or electrolyte imbalances.

What causes pyloric stenosis?

The exact cause of pyloric stenosis is unknown. It may be due to a combination of genetic and environmental factors. It’s more common in first-born male infants and those with a family history of the condition.

How is pyloric stenosis treated?

The primary treatment is a surgical procedure called pyloromyotomy, which involves splitting the muscle of the pylorus to relieve the obstruction. Before surgery, fluid and electrolyte imbalances are corrected.

Can pyloric stenosis be prevented?

There are no known ways to prevent pyloric stenosis. Awareness of its symptoms and early medical intervention are crucial for effective treatment and recovery.

What is the prognosis for infants with pyloric stenosis?

The prognosis for infants with pyloric stenosis is excellent after surgical treatment. Most infants recover completely and can feed normally soon after surgery without long-term complications.

Common symptoms of pyloric stenosis include persistent vomiting, which may occur shortly after feeding, a palpable mass in the abdomen, and dehydration. Infants affected by this condition often experience weight loss and fail to thrive.

Although the exact cause of pyloric stenosis is unknown, it is believed to be influenced by both genetic and environmental factors. It is more commonly observed in males and is often diagnosed within the first few weeks or months of life.

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Treatment for pyloric stenosis typically involves surgery to widen the pyloric channel. The most common surgical procedure for this condition is called pyloromyotomy, where the thickened muscles are divided to improve the passage of food. Following surgery, infants usually recover well and can resume normal feeding patterns.

  • Pyloric Stenosis:
    • Vomiting after feeding
    • Forceful projectile vomiting
    • Weight loss or poor weight gain
    • Constant hunger
    • Irritability or fussiness after eating
    • Dehydration
    • Decreased urine output
    • Visible waves of movement from left to right in the upper abdomen (peristalsis)
    • Palpable olive-shaped mass in the upper abdomen

Pyloric Stenosis

The causes of Pyloric Stenosis may include:

  • Genetic factors
  • Inherited susceptibility
  • Abnormal muscle development in the pylorus
  • Overgrowth of the pyloric muscle
  • Local inflammation or infection

Pyloric Stenosis Diagnosis

Information about Pyloric Stenosis:

Pyloric Stenosis is a condition characterized by an abnormally thickened muscle at the outlet of the stomach, known as the pylorus. It primarily affects infants and causes blockage or narrowing of the passage between the stomach and the small intestine. Common symptoms include forceful vomiting, dehydration, weight loss, and infrequent bowel movements.

Methods for Diagnosing Pyloric Stenosis:

  • Physical Examination: A doctor will carefully examine the abdomen for signs of an enlarged pylorus or an olive-shaped mass, which may be palpable.
  • Medical History Assessment: The doctor will obtain a detailed medical history, including information about the infant’s feeding patterns, vomiting frequency, and weight loss. This helps in ruling out other potential causes for the symptoms.
  • Ultrasound: An abdominal ultrasound is commonly used to confirm the diagnosis of pyloric stenosis. It allows visualization of the thickened pylorus muscle and helps in measuring its length and width.
  • Lab Tests: Blood tests may be performed to assess electrolyte levels and ensure the baby is not dehydrated.

It is important to note that this is just an example markup. The actual diagnosis and methods may vary depending on the individual case and the medical professional’s judgment.

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