Síndrome de Moebius, comunicación interventricular asociado a exposición prenatal a misoprostol / Moebius Syndrome, ventricular septal defect due to prenatal exposure to misoprostol

Introducción: El síndrome o secuencia de Moebius se caracteriza por la afectación del nervio facial y nervio abducens y puede estar asociado a defectos congênitos orofaciales y de las extremidades. Adicionalmente en las dos últimas décadas se han reortada una posible asociación con exposición prenatal a misoprostol. Objetivo: Presentar un caso de síndrome de Moebius con cardiopatía compleja (comunicación interventricular y pseudocoartación de aorta) asociado a exposición prenatal a misoprostol. Caso clínico: Paciente de 5 años quien consulta por antecedente de retardo en el desarrollo psicomotor, anomalías craneofaciales, cardiacas y de las extremidades, con antecedente de exposición prenatal a misoprostol, a quien se le diagnóstica síndrome de Moebius. Conclusiones: Aunque la etiología de este síndrome no es clara, un mecanismo fisiopatológico involucrado es el de la hipoxia que puede ser secundario a la exposición prenatal a misoprostol.

Introduction: Moebius syndrome/sequence is characterized by facial and abducens nerve damage and may be associated with congenital orofacial and limb defects. Additionally, in the last two decades, a possible association with prenatal exposure to misoprostol has been reported. Objective: To present a case of Moebius Syndrome with complex heart disease (ventricular septal defect and pseudocoarctation of the aorta) associated with prenatal exposure to misoprostol. Case report: A 5 year old patient diagnosed with Moebius Syndrome who consulted specialists due to psychomotor retardation, craniofacial, heart and limb defects, and with a history of prenatal exposure to misoprostol is presented. Conclusions: Although the etiology of this syndrome is not clear, hypoxia is a pathophysiological mechanism involved, which can be secondary to prenatal exposure to misoprostol.

Congenital ventricular septal defects and prenatal exposure to cyclooxygenase inhibitors

Ventricular septal defects (VSDs) are common congenital abnormalities which have been reported to be associated with maternal fever and various environmental factors. The aim of the present study was to evaluate the effect of prenatal exposure to cyclooxygenase (COX) inhibitors on heart defects. A retrospective statistical analysis was performed using data collected in our laboratory during various teratological studies carried out on albino CRL:(WI)WUBR Wistar strain rats from 1997 to 2004. The observations were compared with concurrent and historic control data, as well as findings from other developmental toxicological studies with selective and nonselective COX-2 inhibitors. Despite the lack of significant differences in the frequency of VSDs between drug-exposed and control groups, statistical analysis by the two-sided Mantel-Haenszel test and historical control data showed a higher incidence of heart defects in offspring exposed to nonselective COX inhibitors (30.06/10,000). Unlike other specific inhibitors, aspirin (46.26/10,000) and ibuprofen (106.95/10,000) significantly increased the incidence of the VSD when compared with various control groups (5.38-19.72/10,000). No significant differences in length or weight were detected between fetuses exposed to COX inhibitors and born with VSD and non-malformed offsprings. However, a statistically significant increase of fetal body length and decrease of body mass index were found in fetuses exposed to COX inhibitors when compared with untreated control. We conclude that prenatal exposure to COX inhibitors, especially aspirin and ibuprofen, increased the incidence of VSDs in rat offspring but was not related to fetal growth retardation.

Fatal cardiac malformation in fetal valproate syndrome.

A neonate with a fatal cardiac malformation due to maternal valproate intake during pregnancy is presented.