First-trimester fetal heart block: a marker for cardiac anomaly.
Ultrasound Obstet Gynecol
; 14(5): 311-4, 1999 Nov.
Article
en En
| MEDLINE
| ID: mdl-10623989
BACKGROUND: Fetal heart block in the second and third trimesters may be caused by transplacental passage of auto-antibodies or cardiac defects. Little is known about the etiology of first-trimester fetal heart block. MATERIALS AND METHODS: Fetal heart block was diagnosed in four patients (negative antibody serology) referred for first-trimester sonographic evaluation of increased fetal nuchal fold thickness with bradycardia. Two-dimensional echocardiography was complemented by color Doppler flow imaging of the fetal heart. Fetal arrhythmia was verified by M-mode, pulsed wave Doppler and/or color M-mode echocardiography. RESULTS: All fetuses had congenital heart disease, atrioventricular valve regurgitation, heart block and edema. Autopsy confirmed heterotaxy in three cases (left atrial isomerism with atrial septal defect; left isomerism with double-outlet right ventricle, great artery malposition and ventricular septal defect. The third case had dextrocardia with atrioventricular canal defect and the fourth case dextrocardia with great artery transposition. CONCLUSION: First-trimester fetal bradycardia may result from heart block of the type associated with complex congenital heart disease. Accelerated edema formation in this setting may be the basis of nuchal edema formation. First-trimester fetal echocardiography offers the potential for early diagnosis and intervention in these cases with poor prognosis.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Corazón Fetal
/
Bloqueo Cardíaco
/
Cardiopatías Congénitas
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Prognostic_studies
/
Screening_studies
Límite:
Adult
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Ultrasound Obstet Gynecol
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
/
GINECOLOGIA
/
OBSTETRICIA
Año:
1999
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Reino Unido