A 6-month-old infant is being evaluated for developmental dy… | 마이메르시 MyMerci
Child Health
문제

A 6-month-old infant is being evaluated for developmental dysplasia of the hip (DDH). The nurse is preparing to assist with the Ortolani test. Which nursing action is the MOST important safety consideration during this examination?

해설
The Ortolani test requires gentle handling to avoid injury to the infant's developing hip joint. Other positions or excessive force can cause harm.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question assesses the critical safety principle during the Ortolani test, a specific physical examination maneuver used to screen for Developmental Dysplasia of the Hip (DDH). The core concept is patient safety and injury prevention in a vulnerable infant population. The Ortolani test involves gently abducting the flexed hips to detect a "clunk" as a dislocated femoral head reduces into the acetabulum. The hip joint in an infant with DDH is unstable and the surrounding ligaments are lax; applying excessive force can damage the articular cartilage, cause avascular necrosis of the femoral head, or even create a false-positive finding by forcing a dislocation.

Answer Rationale: Key Point! The most important safety consideration is gentle handling and avoidance of excessive force. This directly protects the infant from iatrogenic (caused by medical examination) injury to the delicate hip joint structures. The test is designed to be a gentle maneuver to elicit a sign of instability, not a forceful manipulation.

Distractor Analysis:
Watch out for confusion! Option ① is incorrect. The Ortolani test is performed with the infant supine, not prone. The prone position is used for other assessments like visual inspection of gluteal folds, but not for the Ortolani maneuver itself.
Option ③ is incorrect. While the pelvis must be stabilized, the instruction to "apply firm pressure" is misleading and dangerous. Stabilization should be gentle and secure, not forceful. The focus is on the gentle movement of the femur, not on compressing the pelvis.
Option ④ is incorrect. For the Ortolani test, the infant's hips and knees must be flexed to 90 degrees, not fully extended. The maneuver involves gentle abduction of these flexed legs. Keeping the legs extended would make the test impossible to perform correctly and could be uncomfortable for the infant.

Related Concepts: The Ortolani test is typically performed during well-baby checkups in the first few months of life. A positive test (a palpable "clunk") indicates a dislocated hip that is reducible. Its counterpart is the Barlow test, which assesses for a dislocatable hip. Both tests require the infant to be relaxed, which is why they are best done early in the examination before the infant becomes fussy. Concept Summary
ConceptDescriptionKey Nursing Implication
Developmental Dysplasia of the Hip (DDH)Spectrum of hip instability, subluxation, or dislocation present from birth or developing in infancy.Early detection via screening (Ortolani/Barlow) is crucial for non-surgical treatment (Pavlik harness).
Ortolani Test (Reduction maneuver)Infant supine, hips/knees flexed 90°. Gentle abduction and lifting of thighs to feel/sound a "clunk" of reduction.Must be performed gently to avoid injury. A positive test indicates a dislocated but reducible hip.
Barlow Test (Dislocation maneuver)Infant supine, hips/knees flexed 90°. Gentle adduction and downward pressure on thighs to feel a "clunk" of dislocation.Also requires gentle force. A positive test indicates a dislocatable but located hip.
Nursing PriorityPatient Safety & Injury PreventionGentle handling is paramount. Never use force. Ensure infant is calm and relaxed for accurate assessment.
Side-by-Side Comparison!
TestOrtolani ManeuverBarlow Maneuver
PurposeTo detect an already dislocated hip that can be reduced.To detect a dislocatable hip (located but unstable).
ActionGentle abduction and anterior lifting of the flexed thigh.Gentle adduction and posterior pressure on the flexed thigh.
Positive SignPalpable or audible "clunk" as femoral head reduces into acetabulum.Palpable "clunk" or sensation as femoral head exits the acetabulum.
Common AgeMost reliable in infants < 3 months old (before soft tissues tighten).Most reliable in infants < 3 months old.
Shared PrincipleKey Point! Both require a relaxed infant and extremely gentle handling to prevent injury.
Anatomy, Physiology & Pharmacology Points Anatomy: The hip is a ball-and-socket joint. In DDH, the "socket" (acetabulum) is shallow, and the "ball" (femoral head) is loose or displaced. The labrum (cartilaginous rim) may be inverted (Ortolani's "clunk" is often this labrum flipping back into place).
Physiology: Hormonal relaxation of maternal ligaments (relaxin) can contribute to joint laxity in the newborn. The ideal time for screening is when the infant is most relaxed (e.g., after feeding) to ensure muscle relaxation for an accurate exam.
Pharmacology: Not directly related to the exam maneuver itself. However, pain management (e.g., acetaminophen) may be considered for an infant in a Pavlik harness if there is discomfort from the device, not the examination. Memory Tips
  • Ortolani = "Out, then Up" (Abduct and lift to get the dislocated hip OUT of its bad position and UP into the socket).
  • Barlow = "Back, then Down" (Adduct and press BACK/DOWN to see if the hip dislocates out the back of the socket).
  • Safety First: Think "Baby's bones are soft, be GENTLE." Force can break cartilage.
  • Position: Remember the "Frog-Leg" position: Supine with hips and knees bent at 90 degrees for both tests.
High-Frequency NCLEX Topics DDH screening (Ortolani/Barlow) is a Core pediatric topic. The NCLEX loves to test: 1. The correct technique and positioning for the maneuvers. 2. The nurse's role in safety and parent education (e.g., teaching about Pavlik harness care). 3. Differentiating the meaning of a positive Ortolani vs. Barlow test. 4. Knowing the optimal timing for the exam (early infancy, at well-child visits). Watch Out for Question Variations!
  • From Assessment to Intervention: "The nurse performs an Ortolani test on a 2-month-old and feels a distinct 'clunk.' What is the nurse's priority action?" (Answer: Document the finding and report it to the provider promptly for referral to orthopedics).
  • Parent Education Focus: "The nurse is teaching parents of an infant diagnosed with DDH about the Pavlik harness. Which statement by a parent indicates a need for further teaching?" (Look for answers about removing the harness for bathing or applying lotion under the straps).
  • Developmental Milestones: Linking DDH to late walking or an observed gait abnormality (e.g., Trendelenburg gait) in an older infant/toddler.

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are a nurse in a pediatric clinic. During a 6-week well-baby visit for baby Liam, you assist the pediatrician with the hip examination. The room is warm, and Liam is calm, having just been fed by his mother.

Nursing Intervention Strategy: 1. Assessment & Preparation: Explain the procedure briefly to the parents to alleviate anxiety. Ensure the examination table is padded and secure. Have the infant undressed except for a diaper. Critical: Assess that the infant is relaxed. A crying, tense infant will have tight leg muscles, making the test difficult and potentially unsafe if forced. 2. Implementation & Safety: Position Liam supine. Gently flex his hips and knees to 90 degrees. Your role is often to help stabilize the pelvis gently with one hand while the provider performs the Ortolani maneuver with the other. Your stabilization should be secure but not forceful. You must visually and verbally cue the provider if the infant becomes distressed, suggesting a pause. 3. Patient Safety and Precautions: Key Point! Never apply sudden or jerking force. The force used should be minimal—only the weight of the infant's own leg is often sufficient. If resistance is met, stop. Forcing the maneuver can cause a Physis (growth plate) injury or damage the blood supply to the femoral head. 4. Education & Evaluation: After the exam, inform the parents of the findings. If DDH is suspected, provide clear explanations about the referral process to a pediatric orthopedist and the potential use of a Pavlik harness, emphasizing that early treatment is highly effective. Nursing Procedure & Medication Flow Procedure: Assisting with Ortolani/Barlow Examination 1. Provide privacy and explain the procedure to parents. 2. Create a warm, calm environment. Perform exam early in the visit while infant is calm. 3. Place infant supine on a firm, padded surface. 4. Undress infant to expose hips and legs. 5. Flex the infant's hips and knees to 90 degrees (the "frog-leg" starting position). 6. The examiner places their thumbs on the inner thighs and fingers on the greater trochanters. 7. For Ortolani: Examiner gently abducts the hips while applying an upward lift on the thighs. 8. For Barlow: From the abducted position, examiner gently adducts the hips while applying a slight downward pressure. 9. Nurse assists by gently stabilizing the pelvis and observing the infant for signs of discomfort. 10. Document findings clearly: "Ortolani: Negative (no clunk felt). Barlow: Negative (no instability noted)." or report positive findings immediately. A Word from Your Senior Nurse "Remember, our little patients can't tell us when something hurts during an exam. We are their advocates and protectors. That 'gentle handling' instruction isn't just a test answer—it's a sacred rule in pediatric nursing. Feeling that delicate 'clunk' requires finesse, not force. In clinical practice, your keen observation that an infant is becoming tense and your suggestion to pause and soothe them can be the difference between a valid exam and a traumatic one. Carry this mindset of protective gentleness from your NCLEX studies into every interaction at the bedside."

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