A post-term infant, delivered vaginally, is exhibiting tachycardia, grunting, retractions and nasal flaring. The nurse interprets that these assessment findings are indicative of?

1. A

   Hypoglycaemia

2. B

   Respiratory distress syndrome

3. C

   Meconium aspiration syndrome

4. D

   Transient tachypnea of the newborn

Appeared in: DHS Staff Nurse - 2018 (Shift-2nd)

Explanation

• Meconium Aspiration Syndrome (MAS) because the infant is post-term, a key risk factor for passing meconium in utero.
• Fetal stress, common in post-term pregnancies, can lead to the passage of meconium into the amniotic fluid.
• The infant's symptoms—tachycardia, grunting, retractions, and nasal flaring—are all hallmark signs of significant respiratory distress caused by the aspiration of meconium, which leads to airway obstruction and chemical pneumonitis.
• Unlike other conditions, MAS specifically links the post-term status with this severe respiratory presentation.

Why Other Options Were Wrong

• Option A: Hypoglycemia's primary manifestations are typically neurological (e.g., jitteriness, lethargy, poor feeding, seizures), not the severe respiratory distress signs seen in this infant.
• Option B: Respiratory Distress Syndrome (RDS) is fundamentally a disease of prematurity, caused by insufficient surfactant production. It is extremely rare in a post-term infant who should have mature lungs.
• Option D: Transient Tachypnea of the Newborn (TTN) is caused by retained fetal lung fluid and is most strongly associated with delivery by Cesarean section without labor. The respiratory distress is also typically milder and resolves more quickly than what is described.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Assessment of respiratory distress in a post-term newborn to guide bedside assessment, documentation, and the next nursing action.
• Recognizing the signs of respiratory distress in a newborn is a critical nursing skill, as prompt intervention is vital to prevent hypoxia and long-term complications.
• The presence of meconium-stained amniotic fluid during a post-term delivery should alert the nursing and medical team to the high risk of MAS, ensuring that personnel skilled in neonatal resuscitation are present at birth.
• What if? - If the infant in the scenario was born at 32 weeks gestation, the most likely diagnosis would immediately shift to Respiratory Distress Syndrome (RDS) due to the high probability of surfactant deficiency in a preterm neonate.

How to Approach the Question

• First, identify the key patient characteristics from the question stem: the infant is 'post-term' and was delivered 'vaginally'.
• Next, recognize the cluster of symptoms: 'tachycardia, grunting, retractions, and nasal flaring' are all classic signs of respiratory distress.
• Correlate the primary risk factor (post-term gestation) with the potential causes of respiratory distress listed in the options.
• Evaluate each option based on its typical risk factors: RDS is linked to prematurity, TTN to C-sections, and Hypoglycemia to different symptoms.
• Conclude that Meconium Aspiration Syndrome is the only option that strongly aligns with a post-term infant exhibiting severe respiratory distress.

Concept Tested & Keywords

• Concept Tested: Assessment of respiratory distress in a post-term newborn.
• Stem keywords: post-term infant, vaginal delivery, tachycardia, grunting, retractions, nasal flaring
• Lead-in keywords: indicative of
• Clinical cues: The combination of 'post-term' status and signs of severe respiratory distress is a classic presentation for Meconium Aspiration Syndrome.

Question ID

QfXfsl-IQ1qiMmUpRlAvcW

Copy ID

Reference Book

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 155-157

E6 Obstetrics Williams p. 6-17