A 9-month-old infant is brought to the emergency department by parents who report sudden onset of severe abdominal pain with intermittent crying episodes. Which assessment finding would be most characteristic of intussusception?
1Projectile vomiting and visible peristaltic waves
2Rigid abdomen with rebound tenderness
3Currant jelly-like stools and drawing knees to chest✓ 정답
4High-pitched bowel sounds and abdominal distention
해설
Intussusception is characterized by intermittent severe pain, currant jelly-like stools, and a sausage-shaped mass. The infant often draws knees to the chest during pain episodes. Other options are more typical of pyloric stenosis (projectile vomiting), peritonitis (rigid abdomen), or obstruction (high-pitched bowel sounds).
Core Nursing ExplanationKey Concept Analysis: This question assesses the classic clinical presentation of Intussusception in an infant. Intussusception is a pediatric surgical emergency where a segment of the intestine (the intussusceptum) telescopes into an adjacent segment (the intussuscipiens). This causes bowel obstruction, venous congestion, and eventually ischemia. The hallmark triad of symptoms is intermittent severe abdominal pain, a palpable sausage-shaped abdominal mass, and currant jelly stools (which are a late sign of mucosal ischemia and bleeding).
Answer Rationale: Key Point! The correct answer is option 3 because it combines two classic signs: Currant jelly-like stools (a pathognomonic sign of intussusception) and the posture of drawing knees to the chest during pain episodes. This posture is a reflexive attempt to relieve the severe, colicky pain caused by the telescoping bowel and ischemia.
Distractor Analysis:
Watch out for confusion! Option 1: "Projectile vomiting and visible peristaltic waves" are classic signs of Hypertrophic Pyloric Stenosis, typically seen in infants around 2-8 weeks old, not intussusception.
Option 2: "Rigid abdomen with rebound tenderness" indicates Peritonitis, a severe complication that can occur if intussusception is left untreated and perforation occurs. However, it is not the *most characteristic* initial finding; it's a sign of advanced disease.
Option 4: "High-pitched bowel sounds and abdominal distention" are signs of a Bowel Obstruction. While intussusception *causes* an obstruction, these findings are non-specific and can be seen in many other causes of obstruction (e.g., volvulus, adhesions). They do not specifically point to intussusception like the currant jelly stools do.
Related Concepts: The diagnosis is often confirmed by an air or contrast enema, which can also be therapeutic. The priority nursing interventions include NPO (Nothing by mouth) status, IV fluid resuscitation for potential dehydration and shock, and preparing the child for possible surgery if reduction via enema is unsuccessful.
Concept Summary
Condition
Key Pathophysiology
Classic Clinical Findings
Typical Age
Intussusception
Telescoping of bowel causing obstruction, venous congestion, ischemia
Intermittent severe pain (knee-chest posture), currant jelly stools, sausage-shaped mass
3 months - 3 years (peak 5-9 months)
Hypertrophic Pyloric Stenosis
Hypertrophy of pyloric muscle causing gastric outlet obstruction
Projectile non-bilious vomiting, visible peristalsis, olive-shaped mass
Intermittent, severe, colicky; child draws knees up
May occur, often bilious later
Currant jelly (blood & mucus)
Sausage-shaped mass in RUQ
Pyloric Stenosis
Not a primary feature; hunger pains may occur
Projectile, non-bilious after feeds
Decreased, may be constipated
Olive-shaped mass in epigastrium; visible peristalsis
Appendicitis
Periumbilical pain migrating to RLQ; constant
Anorexia, nausea, vomiting
Normal or diarrhea
McBurney's point tenderness, rebound
Anatomy, Physiology & Pharmacology Points
Pathophysiology: The telescoping bowel (ileocolic intussusception is most common) creates a lead point. Venous return is obstructed first, causing edema and bleeding from the mucosa into the bowel lumen → "currant jelly stool." Arterial compromise leads to ischemia and necrosis.
Diagnostic Gold Standard: Ultrasound shows a "target sign" or "pseudokidney sign." An air enema is both diagnostic and therapeutic.
Nursing Priority: Assess for signs of hypovolemic shock (tachycardia, delayed capillary refill, decreased urine output) due to fluid loss from vomiting and third-spacing.
Age Association: Think of the "9" in 9-month-old. Intussusception is common in the first year.
Posture: The child pulls knees to chest → think of trying to "shorten" or relieve the pull on the telescoped intestine.
High-Frequency NCLEX Topics
NCLEX loves to test the classic triad of intussusception. You must be able to recognize it from a brief vignette. They also test the priority nursing action (e.g., prepare for diagnostic/therapeutic enema, maintain NPO, establish IV access) and post-procedure care after a successful reduction (monitoring for recurrence, advancing diet).
Watch Out for Question Variations!
From Symptom to Intervention: "The nurse notes currant jelly stools in an infant. What is the priority action?" (Answer: Notify the provider immediately/prepare for diagnostic enema).
Post-Procedure Teaching: "After a successful air enema for intussusception, the parent asks when the child can eat. What is the nurse's best response?" (Answer: After tolerance of clear liquids and passage of normal stool).
Complication Recognition: "Which finding in a child with intussusception indicates a possible perforation?" (Answer: Sudden relief of pain followed by signs of peritonitis/rigid abdomen).
Nursing Clinical Practice GuideClinical Scenario: You are the triage nurse in the Pediatric ED. Parents rush in with their 9-month-old, Liam, who has been screaming inconsolably every 15-20 minutes for the past 4 hours, becoming lethargic between episodes. During an episode, he draws his legs up to his chest. The mother mentions his last diaper had a red, jelly-like substance in it.Nursing Intervention Strategy:
1Immediate Assessment (ABCs)Quickly assess airway, breathing, circulation. Check vital signs, focusing on heart rate (tachycardia from pain/dehydration) and capillary refill.
2Focused History & Physical* History: Ask about onset, pattern of pain, vomiting (color, frequency), stool description, recent illness (viral infections can be a predisposing factor).
* Physical: Perform a gentle abdominal exam. Palpate for a sausage-shaped mass in the right upper quadrant. Do not repeatedly palpate a rigid or extremely tender abdomen, as this can worsen the condition.
3Priority Actions* NPO: Place the child on NPO status immediately.
* IV Access: Establish IV access for fluid resuscitation (isotonic solution like Normal Saline) and medication administration.
* Diagnostic Prep: Prepare the child and family for an abdominal ultrasound. Explain the possibility of an air enema procedure.
4Support & EducationKeep parents informed. Explain that the screaming episodes are due to severe pain. Comfort the child as much as possible between pain episodes.
Patient Safety and Precautions:
* Never administer analgesics that could mask the symptoms before a diagnosis is confirmed, unless specifically ordered with close monitoring.
* Do not give anything by mouth, as the child may need emergency surgery.
* Monitor closely for signs of perforation: sudden relief of pain followed by a rigid, distended abdomen, fever, and signs of shock.
Nursing Procedure & Medication FlowPre- and Post-Air Enema Care:
* Before: Ensure informed consent. Confirm NPO status. Have emergency equipment available (in case of perforation).
* During: The radiologist will insufflate air into the rectum under fluoroscopy to push the telescoped bowel back into place.
* After (If Successful):
1. Monitor for recurrence of symptoms (pain, vomiting) for 24 hours.
2. Begin with clear liquids once alert and with active bowel sounds. Advance diet as tolerated.
3. Observe for passage of normal stool and flatus, indicating patent bowel.
4. Educate parents on signs of recurrence (return of symptoms) and when to seek immediate care.
A Word from Your Senior Nurse
"Intussusception is one of those 'don't miss' diagnoses in pediatrics. That currant jelly stool is a gift—a clear, classic sign. In the chaos of a crying infant and anxious parents, your systematic assessment and swift action are critical. Remember your ABCs first, then think 'triad.' Getting that IV in and the child NPO are your first nursing priorities to stabilize them for the definitive treatment. Trust your assessment—if you see that jelly-like stool and intermittent pain, advocate for the child and escalate your concerns immediately. This is where your knowledge directly saves a bowel and a life."