A 2-year-old toddler is admitted to the pediatric unit with suspected Kawasaki disease. Which assessment finding would be most indicative of the acute phase of this condition?
1Desquamation of fingers and toes with joint pain
2High fever for 6 days with bilateral conjunctival injection and strawberry tongue✓ 정답
3Coronary artery aneurysms detected on echocardiogram
4Thrombocytosis with platelet count of 600,000/mm³
해설
High fever for 6 days with bilateral conjunctival injection and strawberry tongue are classic acute phase findings of Kawasaki disease. Other options are seen in later phases or are diagnostic findings.
Core Nursing ExplanationKey Concept Analysis: This question tests the ability to identify the cardinal clinical manifestations of the Acute febrile phase of Kawasaki disease (KD). Kawasaki disease is an acute, self-limited vasculitis of unknown etiology that primarily affects medium-sized arteries, especially the coronary arteries, in infants and young children. The diagnosis is primarily clinical, based on the presence of specific signs and symptoms that appear in a characteristic sequence. The acute phase is defined by the presence of fever and other principal clinical criteria.
Answer Rationale: Key Point! The correct answer is option 2 because it lists the classic diagnostic criteria that must be present during the acute phase for a diagnosis of Kawasaki disease. According to the American Heart Association (AHA) criteria, the diagnosis requires fever persisting for at least 5 days plus the presence of at least four of the following five principal features: 1) Bilateral, non-purulent conjunctival injection, 2) Changes in the lips and oral cavity (e.g., strawberry tongue, cracked lips), 3) Changes in the extremities (e.g., erythema, edema), 4) Polymorphous rash, and 5) Cervical lymphadenopathy. Option 2 directly includes the prolonged high fever and two of these principal features (conjunctival injection and strawberry tongue), making it the most indicative finding of the acute phase.
Distractor Analysis:
Watch out for confusion! Option 1, "Desquamation of fingers and toes with joint pain," is a hallmark of the Subacute phase (typically occurring in weeks 2-4), not the acute phase. This peeling is a critical sign but appears after the fever has resolved.
Option 3, "Coronary artery aneurysms detected on echocardiogram," is a serious Complication of KD, not a diagnostic criterion for the acute phase. While echocardiograms are essential for monitoring, aneurysms develop later, and their presence confirms the diagnosis of "Kawasaki disease with coronary involvement" but is not what you initially assess for to diagnose the acute illness.
Option 4, "Thrombocytosis with platelet count of 600,000/mm³," is a characteristic Laboratory finding of the subacute phase. Platelet counts are often normal or slightly decreased in the acute phase and rise dramatically in weeks 2-3. This finding supports the diagnosis but is not a primary clinical assessment finding.
Related Concepts: Understanding the Three-phase progression of Kawasaki disease (Acute febrile, Subacute, Convalescent) is crucial for timing assessments and anticipating complications. The primary nursing goal during the acute phase is early recognition and prompt administration of Intravenous Immunoglobulin (IVIG) and high-dose aspirin to reduce inflammation and prevent coronary artery damage.
Concept Summary
Key Differentiating Features from Kawasaki Disease
Scarlet Fever
Sandpaper rash, Pastia's lines, Circumoral pallor, Positive throat culture for Group A Strep, Responds to antibiotics.
Measles (Rubeola)
Koplik's spots (pathognomonic), Coryza, Cough, Conjunctivitis (the "3 C's"), Rash starts on face/hairline and spreads downward.
Toxic Shock Syndrome
Hypotension, Multi-organ involvement, Often associated with tampon use or wound infection.
Juvenile Idiopathic Arthritis (JIA)
Persistent arthritis (>6 weeks), Fever may be quotidian (spiking once daily), No conjunctival injection or oral changes typical of KD.
Anatomy, Physiology & Pharmacology PointsPathophysiology: KD causes a Panvasculitis – inflammation of all three layers of the blood vessel wall. The coronary arteries are most vulnerable because they are medium-sized muscular arteries with a high density of vasa vasorum (small vessels that supply the artery wall itself), which may facilitate inflammatory cell infiltration. Pharmacology: First-line treatment is a single high-dose infusion of IVIG (Intravenous Immunoglobulin) (2 g/kg over 10-12 hours) combined with high-dose Aspirin (80-100 mg/kg/day in divided doses) during the acute phase. After fever resolves, aspirin dose is lowered to an antiplatelet dose (3-5 mg/kg/day) for its antithrombotic effect, especially if coronary abnormalities are present.
Memory TipsCRASH and Burn is a classic mnemonic for the principal features of Kawasaki Disease: Conjunctivitis (bilateral, non-purulent) Rash (polymorphous) Adenopathy (cervical, >1.5 cm) Strawberry tongue / oral changes Hands and feet (erythema, edema, later peeling)
...and Burn = High Fever.
High-Frequency NCLEX Topics
Kawasaki disease is a High Yield pediatric topic. The NCLEX-RN frequently tests: 1) Recognizing the classic acute phase symptoms, 2) Understanding the purpose and timing of IVIG and aspirin therapy, 3) Knowing that Coronary artery aneurysms are the most serious complication, and 4) Identifying patient education points for long-term follow-up (e.g., avoiding live vaccines after IVIG, importance of echocardiograms).
Watch Out for Question Variations!
* Priority Intervention: "The nurse is caring for a child with Kawasaki disease in the acute phase. Which action is the priority?" (Answer: Administering IVIG as prescribed to reduce inflammation and prevent coronary damage).
* Medication Knowledge: "A child with Kawasaki disease is receiving high-dose aspirin. For which finding should the nurse monitor most closely?" (Answer: Signs of Reye's syndrome – vomiting, lethargy, confusion – especially if the child develops a viral illness like influenza or chickenpox).
* Discharge Teaching: "Which statement by a parent indicates understanding of teaching for a child recovering from Kawasaki disease?" (Correct: "I will give the low-dose aspirin every day as ordered and watch for any signs of bleeding.").
Nursing Clinical Practice GuideClinical Scenario: You are the nurse on a pediatric unit admitting Liam, a 20-month-old boy. His mother reports he has had a high fever (39.5°C/103.1°F) for 5 days that doesn't respond well to acetaminophen. He is irritable, has red eyes without discharge, and his lips are bright red and cracked. You note a diffuse, red maculopapular rash on his trunk.
Nursing Intervention Strategy:
1AssessmentPerform a thorough head-to-toe assessment focusing on KD criteria: measure fever accurately, inspect conjunctiva (use a penlight), examine oral cavity for strawberry tongue and lip fissures, assess skin for rash, palpate extremities for edema/erythema, and gently palpate the neck for lymph nodes (>1.5 cm). Document all findings meticulously.
2Nursing Diagnosis & PlanningPrimary nursing diagnoses may include Hyperthermia, Acute Pain related to inflammation and irritability, and Risk for Decreased Cardiac Output related to potential coronary arteritis. The plan includes managing fever, ensuring comfort, administering ordered medications promptly, and monitoring for complications.
3Implementation* Fever Management: Administer antipyretics as ordered (often acetaminophen alternating with ibuprofen, but avoid ibuprofen if high-dose aspirin is being given due to increased bleeding risk). Use cooling measures like lightweight clothing.
* Comfort & Hydration: The child will be irritable. Provide a calm environment. Offer cool, soft, non-acidic fluids frequently (e.g., popsicles, water) to maintain hydration and soothe the oral mucosa.
* Medication Administration: Prepare for IVIG infusion. This is a Key Point! blood product administration. Check the order, verify patient identity, obtain baseline vital signs, and administer slowly as per protocol (often over 10-12 hours) while monitoring closely for infusion reactions (fever, chills, hypotension, anaphylaxis). Administer high-dose aspirin with food or milk to minimize GI upset.
4EvaluationEvaluate for resolution of fever within 24-48 hours after IVIG completion (this is a key treatment success indicator). Monitor for the expected subacute phase signs like peeling skin. Assess for any signs of cardiac compromise (tachycardia out of proportion to fever, gallop rhythm, chest pain in older children).
Nursing Procedure & Medication FlowIVIG Administration Precautions:
* Pre-medication: Diphenhydramine and/or acetaminophen may be ordered pre-infusion to prevent reactions.
* Rate: Start slowly (e.g., 0.5 mL/kg/hr for 30 min), then gradually increase to the ordered rate if well-tolerated. Use an infusion pump.
* Monitoring: Monitor vital signs every 15-30 minutes initially. Observe for Aseptic meningitis (severe headache, photophobia, neck stiffness) as a potential delayed reaction.
* Post-Infusion: Live virus vaccinations (MMR, Varicella) must be postponed for 11 months after IVIG administration as it can interfere with the immune response.
A Word from Your Senior Nurse
"Kawasaki disease is a perfect example of why your sharp assessment skills are lifesaving. That irritable toddler with the 'weird rash' and red eyes could be on a path to coronary artery damage if we don't connect the dots quickly. In the real world, parents are scared and exhausted. Your job is to be the detective who gathers the clues (the symptoms), the advocate who ensures timely treatment (IVIG), and the teacher who prepares the family for the weeks of follow-up ahead. When you see that classic peeling of the fingertips weeks later, you'll know your care made a difference. Never underestimate the power of a thorough assessment!"