Martínez Granero M A, Argüelles F, Roche Herrero M C, Omeñaca F, López Terradas J M, Ortigado A
Servicio de Neurología Infantil, Hospital Infantil La Paz, Madrid.
An Esp Pediatr. 1998 Jan;48(1):44-8.
The objectives of this study were to determine in our newborn population the frequency of facial asymmetry during crying or congenital hypoplasia of the depressor anguli oris muscle (DAOM) without associated major malformations and to evaluate the contribution of electrophysiological studies in the diagnosis of this anomaly.
We performed a prospective study of the living newborns with facial asymmetry which did not need to be admitted to the hospital and that were delivered without the use of forceps in our hospital during 4 consecutive years. Newborn evaluation included physical examination, facial nerve electroneurography and DAOM electromyography.
This anomaly without major malformations was present in 0.348/1,000 newborns. Electrophysiological studies demonstrated a normal latency in the facial nerve electroneurography and an absence or reduced number of motor unit potential without signs of denervation in the electromyography.
Diagnosis of this entity is important to exclude facial nerve palsy. Only a physical examination is necessary for a correct diagnosis.
本研究的目的是确定在我们的新生儿群体中，哭泣时面部不对称或口降肌先天性发育不全（DAOM）且无相关重大畸形的发生率，并评估电生理研究在该异常诊断中的作用。
我们对连续4年在我院出生、无需住院且未使用产钳分娩的面部不对称活产新生儿进行了前瞻性研究。新生儿评估包括体格检查、面神经神经电图和口降肌肌电图。
每1000例新生儿中，无重大畸形的该异常发生率为0.348。电生理研究显示，面神经神经电图潜伏期正常，肌电图中运动单位电位数量缺失或减少，但无失神经支配迹象。
诊断该疾病对于排除面神经麻痹很重要。正确诊断仅需体格检查。
