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Zorluk: ZorPediatric Gastrointestinal Disorders

A 48-hour-old full-term neonate is evaluated in the neonatal intensive care unit for failure to pass meconium since birth. Over the past six hours, the infant has developed progressive abdominal distension and just had an episode of dark green vomiting. Vital signs show a heart rate of 158/min, respiratory rate of 48/min, temperature of 37.1°C (98.8°F), and blood pressure of 65/42 mmHg. Physical examination reveals a tensely distended, tympanitic abdomen with hypoactive bowel sounds, but no abdominal wall erythema or rigidity. Digital rectal examination reveals normal anal tone and an empty rectal vault with no stool expulsion upon withdrawal of the finger. Arrange the following steps in the most appropriate sequence for the evaluation and management of this patient.

  1. 1Establish intravenous access, initiate fluid resuscitation, and insert an orogastric tube.
  2. 2Obtain anteroposterior and cross-table lateral plain abdominal radiographs.
  3. 3Administer a fluoroscopic water-soluble contrast enema.
  4. 4Consult pediatric surgery for operative management.

Cevap

The correct sequence begins with immediate medical stabilization and bowel decompression, followed by ruling out intestinal perforation with plain radiography. Next, a diagnostic and potentially therapeutic water-soluble contrast enema is performed for the suspected distal obstruction. Surgical intervention is reserved as the final step if nonoperative management fails.
The correct sequence follows the standard algorithm for a hemodynamically stable neonate presenting with signs of a distal bowel obstruction (bilious emesis, marked distension, failure to pass meconium). Resuscitation and decompression are universally the first step. Plain radiography must follow to exclude perforation. Once perforation is excluded, a water-soluble contrast enema is used to diagnose and potentially treat conditions like meconium ileus or meconium plug syndrome. Surgery is reserved for cases refractory to enema therapy.

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1
Establish intravenous access and insert an orogastric tube.
Restores intravascular volume and prevents aspiration of bilious emesis.
The absolute first priority in any neonate with bilious emesis is hemodynamic stabilization and gastric decompression, regardless of the underlying etiology.
2
Obtain plain abdominal radiographs.
Identifies dilated bowel loops and evaluates for free intraperitoneal air.
Plain films are required to confirm the presence of obstruction and, critically, to rule out pneumoperitoneum (perforation), which would contraindicate contrast studies.
3
Perform a water-soluble contrast enema.
Differentiates between lower GI causes (such as Hirschsprung disease or meconium ileus) and can break down inspissated meconium.
In a stable neonate with distal obstruction (suggested by delayed meconium and marked distension) and no perforation, a hyperosmolar enema draws fluid into the bowel lumen, often breaking up the obstruction.
4
Consult pediatric surgery for laparotomy.
Allows for manual evacuation of meconium or resection of affected bowel segments.
Surgical intervention is indicated only if the contrast enema fails to relieve the obstruction, or if complications such as perforation or ischemia are identified.

Anahtar Kavram

Stepwise Management of Neonatal Distal Bowel Obstruction
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Konular

Pediatric Gastrointestinal Disorders

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