Pyloric stenosis: Difference between revisions

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'''Pyloric stenosis''' is a condition that affects the [[gastrointestinal tract]] in infants. It is characterized by the narrowing of the [[pylorus]], the lower part of the stomach that connects to the [[small intestine]]. This condition can cause severe [[vomiting]], weight loss, and dehydration.
{{SI}}
 
{{Infobox medical condition
== Symptoms and signs ==
| name            = Pyloric stenosis
The most common symptom of pyloric stenosis is [[projectile vomiting]], which typically starts around three weeks of age. Other symptoms can include weight loss, dehydration, and changes in bowel movements. Infants with this condition may also appear to be constantly hungry.
| image          = [[File:Gray1046.svg|left|thumb|200px]]
 
| caption        = Diagram of the stomach, showing the pylorus at the lower right
== Causes ==
| field          = [[Gastroenterology]]
The exact cause of pyloric stenosis is unknown, but it is believed to be a combination of genetic and environmental factors. Some studies suggest that certain antibiotics taken during pregnancy or in the first weeks of a baby's life can increase the risk of developing this condition.
| synonyms        = Infantile hypertrophic pyloric stenosis (IHPS)
 
| symptoms        = [[Projectile vomiting]], [[dehydration]], weight loss
== Diagnosis ==
| complications  = [[Electrolyte imbalance]], [[malnutrition]]
Diagnosis of pyloric stenosis involves a physical examination and medical history. The doctor may also order tests such as an [[ultrasound]] or a [[barium swallow]] to confirm the diagnosis.
| onset          = 2 to 12 weeks of age
 
| duration        = Chronic without treatment
== Treatment ==
| causes          = Unknown, possibly genetic and environmental factors
The primary treatment for pyloric stenosis is surgery, known as a [[pyloromyotomy]]. This procedure involves cutting the muscle of the pylorus to allow food to pass through more easily. Most infants recover quickly after surgery and have no long-term health effects.
| risks          = Male sex, family history, [[macrolide]] antibiotics
 
| diagnosis      = [[Ultrasound]], [[barium swallow]]
== Epidemiology ==
| differential    = [[Gastroesophageal reflux disease]], [[intestinal atresia]], [[metabolic disorders]]
Pyloric stenosis is more common in males than in females, and it often runs in families. It is also more common in first-born children. The condition affects approximately 2 to 4 out of every 1,000 babies in the United States.
| treatment      = [[Pyloromyotomy]]
 
| medication      = [[Atropine]] (rarely used)
== See also ==
| prognosis      = Excellent with treatment
| frequency      = 1 to 4 per 1,000 live births
}}
'''Pyloric stenosis''' is a condition in which the opening between the stomach and small intestine thickens. This condition can lead to severe vomiting, dehydration, and weight loss. It is most commonly seen in infants.
==Signs and Symptoms==
[[File:Pyloric-stenosisLocal.jpg|left|thumb|Ultrasound image showing pyloric stenosis.]]
The primary symptom of pyloric stenosis is projectile vomiting, which typically occurs after feeding. Other symptoms may include:
* Dehydration
* Weight loss
* Constant hunger
* Stomach contractions
==Causes==
The exact cause of pyloric stenosis is unknown, but it is believed to involve a combination of genetic and environmental factors. It is more common in males than females and tends to run in families.
==Diagnosis==
Diagnosis of pyloric stenosis is typically made through a combination of physical examination and imaging studies. An [[ultrasound]] is often used to confirm the diagnosis by showing the thickened pylorus.
==Treatment==
[[File:Pyloromyotomie.jpg|left|thumb|Surgical procedure of pyloromyotomy.]]
The standard treatment for pyloric stenosis is a surgical procedure called [[pyloromyotomy]]. This procedure involves splitting the muscle of the pylorus to relieve the obstruction.
===Surgical Procedure===
[[File:PyloricStenosisHorizontal.jpg|left|thumb|Illustration of pyloric stenosis.]]
The pyloromyotomy can be performed as an open surgery or laparoscopically. The laparoscopic approach is less invasive and involves smaller incisions.
==Prognosis==
With appropriate surgical treatment, the prognosis for infants with pyloric stenosis is excellent. Most infants recover quickly and have no long-term complications.
==See also==
* [[Gastrointestinal tract]]
* [[Gastrointestinal tract]]
* [[Pylorus]]
* [[Infant vomiting]]
* [[Projectile vomiting]]
* [[Dehydration]]
* [[Pyloromyotomy]]
[[Category:Digestive system disorders]]
 
[[Category:Congenital disorders]]
[[Category:Gastrointestinal tract disorders]]
[[Category:Pediatric disorders]]
[[Category:Surgical procedures]]
 
{{stub}}
{{dictionary-stub1}}
== Pyloric_stenosis ==
<gallery>
File:Gray1046.svg|Diagram of the stomach showing the pylorus
File:Pyloric-stenosisLocal.jpg|Ultrasound image of pyloric stenosis
File:Pyloromyotomie.jpg|Surgical image of pyloromyotomy
File:PyloricStenosisHorizontal.jpg|Horizontal view of pyloric stenosis
File:Pylorusstenose.jpg|Image showing pylorus stenosis
File:Laparoscopic_Pyloromyotomy_scar,_6hrs_post-op.jpg|Laparoscopic pyloromyotomy scar, 6 hours post-operation
</gallery>

Latest revision as of 01:02, 14 April 2025

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD medical weight loss NYC and sleep center NYC

Pyloric stenosis
Synonyms Infantile hypertrophic pyloric stenosis (IHPS)
Pronounce N/A
Specialty N/A
Symptoms Projectile vomiting, dehydration, weight loss
Complications Electrolyte imbalance, malnutrition
Onset 2 to 12 weeks of age
Duration Chronic without treatment
Types N/A
Causes Unknown, possibly genetic and environmental factors
Risks Male sex, family history, macrolide antibiotics
Diagnosis Ultrasound, barium swallow
Differential diagnosis Gastroesophageal reflux disease, intestinal atresia, metabolic disorders
Prevention N/A
Treatment Pyloromyotomy
Medication Atropine (rarely used)
Prognosis Excellent with treatment
Frequency 1 to 4 per 1,000 live births
Deaths N/A


Pyloric stenosis is a condition in which the opening between the stomach and small intestine thickens. This condition can lead to severe vomiting, dehydration, and weight loss. It is most commonly seen in infants.

Signs and Symptoms[edit]

File:Pyloric-stenosisLocal.jpg
Ultrasound image showing pyloric stenosis.

The primary symptom of pyloric stenosis is projectile vomiting, which typically occurs after feeding. Other symptoms may include:

  • Dehydration
  • Weight loss
  • Constant hunger
  • Stomach contractions

Causes[edit]

The exact cause of pyloric stenosis is unknown, but it is believed to involve a combination of genetic and environmental factors. It is more common in males than females and tends to run in families.

Diagnosis[edit]

Diagnosis of pyloric stenosis is typically made through a combination of physical examination and imaging studies. An ultrasound is often used to confirm the diagnosis by showing the thickened pylorus.

Treatment[edit]

Surgical procedure of pyloromyotomy.

The standard treatment for pyloric stenosis is a surgical procedure called pyloromyotomy. This procedure involves splitting the muscle of the pylorus to relieve the obstruction.

Surgical Procedure[edit]

Illustration of pyloric stenosis.

The pyloromyotomy can be performed as an open surgery or laparoscopically. The laparoscopic approach is less invasive and involves smaller incisions.

Prognosis[edit]

With appropriate surgical treatment, the prognosis for infants with pyloric stenosis is excellent. Most infants recover quickly and have no long-term complications.

See also[edit]