Fetal SVT is commonly associated with which condition and can lead to which complication?

• A. Wolff-Parkinson-White syndrome; hydrops fetalis due to tachycardia
• B. Maternal diabetes mellitus
• C. Placental previa
• D. Neonatal respiratory distress

Answer: (A)

Fetal SVT is commonly linked to Wolff-Parkinson-White syndrome, where an accessory pathway enables rapid reentrant tachycardia. When the fetus experiences sustained tachycardia, ventricular filling time decreases and the heart is strained, potentially leading to congestive heart failure and hydrops fetalis. Hydrops occurs due to the high-output, failing heart and fluid accumulation in fetal compartments, making this association and complication a classic presentation. The other options don’t describe a typical direct link to fetal SVT or its major fetal complication.