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Retinopathy of Prematurity | 마이메르시 MyMerci
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Retinopathy of Prematurity

NCLEX Review Guide: Retinopathy of Prematurity (ROP)

Pathophysiology and Risk Factors

Understanding ROP

  • Retinopathy of Prematurity (ROP) is a potentially blinding eye disorder that primarily affects premature infants born before 31 weeks gestation or weighing less than 1,250 grams. The condition occurs when abnormal blood vessels develop in the light-sensitive tissue at the back of the eye (retina).
  • Normal retinal blood vessel development is incomplete in premature infants, making them susceptible to oxygen-induced retinal damage and subsequent abnormal vascular proliferation.

Key Risk Factors

  • Gestational age <31 weeks
  • Birth weight <1,250 grams
  • Prolonged oxygen therapy
  • Severe illness requiring intensive care

Clinical Stages and Assessment

ROP Classification System

StageDescriptionSeverity
Stage 1Demarcation line separating vascular from avascular retinaMild
Stage 2Ridge formation with height and volumeModerate
Stage 3Ridge with extraretinal fibrovascular proliferationSevere
Stage 4Partial retinal detachmentAdvanced
Stage 5Total retinal detachmentEnd-stage
Critical Alert: Plus disease indicates aggressive ROP with dilated and tortuous retinal vessels - requires immediate ophthalmologic intervention!

Nursing Care and Interventions

Prevention and Monitoring

  1. Oxygen management: Monitor oxygen saturation closely, maintaining SpO2 between 90-95% to prevent hyperoxia while avoiding hypoxia
  2. Eye examination scheduling: First screening at 4-6 weeks chronological age or 31-33 weeks postmenstrual age, whichever is later
  3. Environmental protection: Minimize bright lights and provide appropriate eye protection during phototherapy
  4. Family education: Teach parents about the importance of follow-up eye examinations and potential long-term complications

Memory Aid: "SCREEN"

  • Small babies (<1,250g)
  • Chronological age 4-6 weeks
  • Retinal examination required
  • Early detection crucial
  • Eye protection important
  • Neonatal intensive monitoring

Treatment Options

Therapeutic Interventions

  • Laser photocoagulation is the gold standard treatment for threshold ROP, destroying avascular retinal tissue to prevent further abnormal vessel growth.
  • Anti-VEGF injections (bevacizumab) may be used as primary treatment for posterior zone disease, blocking vascular endothelial growth factor.
  • Vitrectomy may be necessary for advanced stages with retinal detachment to restore retinal anatomy.

Clinical Scenario

A 28-week gestation infant weighing 950g is now 6 weeks old. The ophthalmologist diagnoses Stage 3 ROP with plus disease in zone 2. This meets threshold criteria requiring immediate treatment within 72 hours to prevent blindness.

Commonly Confused Concepts

ConceptROPCongenital Cataracts
TimingDevelops postnatallyPresent at birth
Risk factorsPrematurity, oxygen exposureGenetic, infections
LocationRetina (back of eye)Lens (front of eye)
Screening4-6 weeks chronological ageImmediate newborn assessment

Don't Confuse:

  • Chronological age vs Corrected gestational age - ROP screening uses chronological age
  • Zone classification vs Stage classification - Zones describe location, stages describe severity

Study Tips and Quick Checks

NCLEX Success Strategies

High-Yield Facts

  • ROP screening: 4-6 weeks chronological age OR 31-33 weeks postmenstrual age
  • Threshold disease requires treatment within 72 hours
  • Oxygen saturation target: 90-95% for premature infants
  • Most critical risk factors: Gestational age <31 weeks AND birth weight <1,250g
Common Pitfall: Don't assume all premature infants need ROP screening - only those meeting specific gestational age and weight criteria require systematic screening.

Quick Check Questions:

  • □ Can you identify the two main risk factors for ROP screening?
  • □ Do you know when the first eye examination should occur?
  • □ Can you explain the difference between ROP stages and zones?
  • □ Do you understand appropriate oxygen saturation targets?

Remember: Early detection and appropriate oxygen management are key to preventing vision loss in premature infants. You're preparing to protect these vulnerable patients' sight - every detail matters! Stay focused and confident in your NCLEX preparation.

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