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Acardiac anomaly: Review of the subject with case report and emphasis on practical sonography

✍ Scribed by John Y. Gibson; Cyril A. D'Cruz; Ramesh B. Patel; Sue M. Palmer

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 502 KB
Volume: 14
Category: Article
ISSN: 0091-2751
DOI: 10.1002/jcu.1870140708

No coin nor oath required. For personal study only.

✦ Synopsis

The acardiac anomaly is a rare condition found only in monozygotic multiple pregnancies, usually twins. We present a review of the pathophysiology of acardia and a case report. Twin embryonic membrane formation is discussed, since a conceptual understanding of the subject is necessary for the early recognition of this and other evere anomalies. Emphasis is placed on close sonographic monitoring to insure the best chance of survival of the normal twin, who may die of heart failure if delivery is not properly timed. Indexing Words: Ultrasound * Acardiac * Twin pregnancy * Em-

bryonic membrane formation

The acardiac anomaly is a rare condition that only occurs in those multiple pregnancies resulting from the fertilization of a single ovum (monozygotic). Although some cases have been reported with triplets, most are found in twin pregnancies. One twin has no heart. Blood is supplied to the circulatory system of this malformed twin by the activity of the heart of the normal twin and is pumped through vascular anastomoses in the placenta. Familiarity with the pathophysiology and sonographic appearance of this condition may provide the opportunity to save the life of the normal twin. This review and case report are presented with that hope in mind.

CASE REPORT

A 21-year-old woman (G3PlAbl) was referred for sonography because of a uterine size too large for menstrual dates. The initial sonogram (SKI 200 scanner, 3.5-MHz transducer) revealed a twin gestation with polyhydramnios and a single poste-From the

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