Question

Difficulty: EasyPediatric Gastrointestinal Disorders

A 9-month-old male infant is brought to the emergency department due to sudden episodes of severe, inconsolable crying during which he draws his legs up to his abdomen. Between episodes, he appears lethargic but calm. The parents report one episode of dark, bloody, mucus-like stool on the way to the hospital. He is tachycardic but normotensive, and the abdomen is soft with a palpable 'sausage-shaped' mass in the right upper quadrant. Arrange the following steps in the correct chronological sequence for the evaluation and management of this patient.

  1. 1Establish intravenous access and initiate fluid resuscitation
  2. 2Obtain an abdominal ultrasound
  3. 3Perform a pneumatic (air) or hydrostatic enema
  4. 4Proceed to surgical exploration

Answer

The correct sequence is: Establish intravenous access and initiate fluid resuscitation, followed by obtaining an abdominal ultrasound, then performing a pneumatic or hydrostatic enema, and finally proceeding to surgical exploration if necessary.
The standard of care for suspected intussusception strictly follows a sequential approach: stabilization (IV fluids) always comes first. Once the patient is hemodynamically stable, the diagnosis is confirmed via abdominal ultrasound. Following confirmation, therapeutic reduction is attempted non-operatively using a pneumatic or hydrostatic enema. Surgical exploration is the treatment of last resort, used only when enema reduction fails or is contraindicated.

Step-by-Step Solution

1
Recognize the clinical presentation of intussusception
Identify that the infant has classic signs of intussusception (colicky pain, lethargy, currant jelly stool, palpable mass) and requires immediate standardized management.
Accurate recognition dictates the proper emergency algorithm.
2
Prioritize initial stabilization
Select intravenous fluid resuscitation as the very first step.
Patients with intussusception are at high risk for dehydration and third-spacing of fluids; the airway, breathing, and circulation (ABCs) must be secured prior to any diagnostic or therapeutic procedure.
3
Select the appropriate diagnostic imaging
Choose abdominal ultrasound as the second step.
Ultrasound is the highly sensitive and specific diagnostic test of choice to confirm intussusception before attempting reduction.
4
Determine the first-line therapeutic intervention
Select pneumatic or hydrostatic enema as the third step.
Once diagnosed, an image-guided enema is used to therapeutically reduce the bowel in stable patients without perforation.
5
Identify the indication for definitive operative management
Place surgical exploration as the final step.
Surgery is strictly reserved for cases where non-operative enema reduction fails or if the patient develops peritonitis/perforation.

Key Concept

Algorithm for the acute management of pediatric intussusception
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