A baby is undergoing phototherapy for hyperbilirubinemia. Which parts of his body should be covered to prevent tissue damage?

Appeared in: KGMU 2023

Explanation

Phototherapy is a primary treatment for neonatal jaundice, using light to break down bilirubin in the skin.
To be effective, the maximum amount of the baby's skin must be exposed to the light.
However, sensitive areas must be protected from potential tissue damage from the high-intensity light.
The eyes are covered with opaque patches to prevent retinal damage.
The genitalia are covered with a small diaper to protect the developing gonads.

Option A: The abdomen has a large surface area and must be left exposed to the phototherapy light to maximize the treatment's effectiveness in breaking down bilirubin.
Option C: The extremities (arms and legs) constitute a significant portion of the body's surface area and must be exposed to the light for the therapy to be effective.
Option D: This option is only partially correct. While the genital area should be covered, it omits the critical need to cover the eyes, which are highly susceptible to retinal damage from the phototherapy lights.

Visual 1: Diagram - An infant undergoing phototherapy. The image should clearly show the opaque eye patches and a small diaper covering the genital area, with the rest of the body exposed to the blue light source.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Safety protocols during neonatal phototherapy as background academic context rather than a clinical decision trigger.
The nurse's primary responsibility is to ensure both the safety and efficacy of phototherapy.
This includes correctly applying protective coverings, monitoring the infant's vital signs (especially temperature), ensuring adequate hydration, and repositioning the infant to maximize skin exposure.
Failure to cover the eyes can lead to permanent retinal damage, a serious and preventable complication.

How to Approach the Question

First, identify the key procedure in the question: phototherapy for hyperbilirubinemia.
Recall the primary goal of phototherapy, which is to expose the infant's skin to light to break down bilirubin.
Consider the principle of maximizing effectiveness: this means exposing as much skin surface area as possible.
Next, consider the safety principle: protecting sensitive tissues from the potential harm of high-intensity light.
Evaluate each option against these two principles. Covering the abdomen or extremities violates the principle of maximizing exposure.
Covering only the genitals ignores the risk to the eyes. Covering the eyes and genitalia correctly balances both effectiveness and safety.

Concept Tested & Keywords

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Practise the full KGMU 2023

Attempt every question from this paper in a timed mock, then review the full solution for each one.