In the phototherapy, distance between baby and light should be - - RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Pediatric Nursing

Easy

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Explanation

The recommended distance of 30-45 cm provides an optimal balance between safety and efficacy.
This range ensures the infant receives a therapeutic level of light irradiance (at least 30 μW/cm2/nm) to effectively break down bilirubin.
Maintaining this distance prevents potential complications such as hyperthermia and skin burns, which can occur if the light source is too close.
The inverse square law dictates that light intensity decreases significantly as the distance from the source increases, making distances greater than 45-60 cm ineffective.

Option B: This distance is too close to the infant, creating a significant risk of hyperthermia (overheating) and potential thermal burns to the newborn's sensitive skin.
Option C: This distance is too far from the infant. According to the inverse square law, the intensity of the light decreases significantly, rendering the phototherapy less effective at breaking down bilirubin.
Option D: The distance is a critical parameter that must be precisely controlled. An arbitrary distance would either be unsafe (too close) or ineffective (too far).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain The concept tested is the safe and effective administration of phototherapy for neonatal jaundice, specifically focusing on the correct distance between the light source and the infant as background academic context rather than a clinical decision trigger.
A nurse's primary responsibility during phototherapy is to ensure the treatment is administered safely and effectively. This includes correctly positioning the equipment and monitoring the infant for both therapeutic response and adverse effects.
Failure to maintain the correct distance can lead to prolonged jaundice (if too far) or serious harm like hyperthermia and skin damage (if too close), impacting patient outcomes and length of hospital stay.
What if? If the unit is equipped with LED lights instead of conventional fluorescent or halogen bulbs, the nurse must verify the manufacturer's specific recommendations, as some LED systems can be placed closer to the infant without generating significant heat.

How to Approach the Question

First, identify the core of the question, which is about a specific parameter in a nursing procedure (distance in phototherapy).
Recognize this as a factual recall question based on standard clinical guidelines.
Recall the principles of phototherapy: it needs to be close enough to be effective but far enough to be safe.
Evaluate the options based on this principle. 15-30 cm sounds too close and risky. 45-60 cm sounds too far to be effective. 'Any distance' is illogical for a medical procedure.
Select the option that represents the established, safe, and effective range taught in nursing education.

Concept Tested & Keywords

Concept Tested: The concept tested is the safe and effective administration of phototherapy for neonatal jaundice, specifically focusing on the correct distance between the light source and the infant.
Stem keywords: phototherapy, distance, baby, light
Lead-in keywords: should be

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 172-174

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1124-1126