During pregnancy if mother exposed by phenytoin then child may suffer from?

NORCET-7 Mains-2024

Obstetrics & Gynaecology

Easy

Appeared in: NORCET-7 Mains-2024

Explanation

Phenytoin is an older anticonvulsant medication with known teratogenic effects, meaning it can cause birth defects if taken during pregnancy.
The specific pattern of anomalies resulting from in-utero exposure to phenytoin is known as Fetal Hydantoin Syndrome (FHS).
Characteristic features of FHS include craniofacial abnormalities (e.g., broad nasal bridge, hypertelorism), underdevelopment of the nails and fingertips (hypoplastic distal phalanges), and growth deficiencies.

Option B: Fetal Alcohol Syndrome is caused by maternal consumption of alcohol during pregnancy, not by the medication phenytoin.
Option C: This is a vague and non-specific term. While the defects are congenital (present at birth), 'Fetal Hydantoin Syndrome' is the specific, correct medical term for the syndrome caused by phenytoin.
Option D: This is a subtype of Fetal Alcohol Spectrum Disorder (FASD) and is also caused by maternal alcohol consumption, not phenytoin.

Visual 1: Infographic - A side-by-side comparison of the characteristic facial features of a child with Fetal Hydantoin Syndrome (broad nasal bridge, wide-set eyes) versus a child with Fetal Alcohol Syndrome (smooth philtrum, thin upper lip).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Teratogenic effects of antiepileptic drugs during pregnancy as background academic context rather than a clinical decision trigger.
Nurses must provide thorough pre-conception counseling to women of childbearing age with epilepsy, discussing the risks of all antiepileptic drugs.
The management of epilepsy in pregnancy involves a careful balance between controlling maternal seizures (which also pose a risk to the fetus) and minimizing teratogenic drug exposure, often by using the lowest effective dose of the safest available medication.
What if? If a pregnant woman requires an antiepileptic, newer agents like levetiracetam or lamotrigine are generally preferred as they appear to have a lower risk of major malformations compared to older drugs like phenytoin or valproic acid.

How to Approach the Question

First, identify the key terms in the question: 'pregnancy' and 'phenytoin'.
Recall or look up the classification of phenytoin. It is an antiepileptic (anticonvulsant) medication.
Access your knowledge base on teratogens (substances that cause birth defects). Recognize that several older antiepileptic drugs are known teratogens.
Differentiate between the specific syndromes caused by different substances. The name 'hydantoin' in 'Fetal Hydantoin Syndrome' is a direct link to phenytoin, which is a hydantoin-class drug.
Eliminate the other options. 'Fetal alcohol syndrome' and 'partial fetal alcohol syndrome' are clearly linked to alcohol. 'Fetal congenital syndrome' is too general and not a specific diagnosis.

Concept Tested & Keywords

Concept Tested: Teratogenic effects of antiepileptic drugs during pregnancy.
Stem keywords: pregnancy, phenytoin, mother exposed
Lead-in keywords: child may suffer from
Clinical cues: Age/sex group narrows the expected diagnosis, intervention, or normal reference range.

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