An infant experiencing hypercyanotic spells is placed in?

SCTIMST Staff Nurse - 2015 (Set-A)

Pediatric Nursing

Easy

Appeared in: SCTIMST Staff Nurse - 2015 (Set-A)

Explanation

The knee-chest position is the immediate and primary intervention for an infant experiencing a hypercyanotic (tet) spell.
This position works by increasing systemic vascular resistance (SVR) by kinking the femoral arteries.
The increased SVR decreases the amount of deoxygenated blood shunting from the right to the left side of the heart (right-to-left shunt).
This forces more blood from the right ventricle into the pulmonary artery, improving pulmonary blood flow and oxygenation, thereby relieving the cyanosis.

Option A: High Fowler's position is used to ease the work of breathing but does not increase systemic vascular resistance (SVR), which is the primary goal in treating a hypercyanotic spell.
Option C: The prone position does not increase SVR and therefore does not correct the underlying hemodynamic problem of a hypercyanotic spell.
Option D: The supine position is the standard position for safe sleep in infants but has no therapeutic benefit during a hypercyanotic spell and does not alter the shunting of blood.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Management of Hypercyanotic Spells in Infants as background academic context rather than a clinical decision trigger.
Recognizing a hypercyanotic spell and immediately placing the infant in the knee-chest position is a critical, life-saving nursing skill.
Parents of infants with known Tetralogy of Fallot must be educated on how to perform this maneuver at home and when to seek emergency care.
What if? If the spell occurs while the infant is in a public place or a car seat, the caregiver should immediately remove the infant and place them in the knee-chest position on their lap or a safe surface while calling for emergency medical help.

How to Approach the Question

First, identify the key clinical condition in the question stem: 'hypercyanotic spells'. This is a medical emergency.
Recall the pathophysiology of a hypercyanotic spell, which involves a sudden increase in the right-to-left shunting of deoxygenated blood.
Think about the primary goal of intervention: to reverse this shunt by increasing systemic vascular resistance (SVR).
Evaluate each positioning option based on its ability to increase SVR.
Recognize that the knee-chest position (in infants) or squatting (in older children) is the classic maneuver to achieve this goal.
Eliminate other positions that are used for different purposes (e.g., High Fowler's for respiratory effort) but do not address the core problem of the spell.

Concept Tested & Keywords

Concept Tested: Management of Hypercyanotic Spells in Infants
Stem keywords: infant, hypercyanotic spells
Lead-in keywords: placed in
Clinical cues: The term 'hypercyanotic spell' is a key clinical cue pointing towards conditions like Tetralogy of Fallot and the specific interventions required.

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