PubMed · 8057594
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D K Begley. 1994. The crying infant.. https://pubmed.ncbi.nlm.nih.gov/8057594/
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This study assessed the responsiveness of newborn breast- and bottle-fed infants to presentations of maternal odor. Maternal odor was presented for 1 min to crying, sleeping or awake newborns. The odors were: (1) own mother's odor - presentation of a hospital gown worn by the baby's mother, (2) other mother's odor - presentation of a hospital gown of another newborn baby's mother, (3) clean gown - presentation of a clean hospital gown and (4) no gown - no gown presented. The results indicated that crying babies stopped crying when either own mother or other mother odor was presented. Awake babies responded specifically to their own mother's odor by increasing mouthing. These results suggest that the practice of presenting the mother's odor to a distressed infant is of clinical usefulness since it was capable of attenuating crying. The results also characterized a role for maternal odor with respect to feeding since presentation of the infant's own mother odor increased mouthing. Thus, presentation of maternal odor may also be useful in enhancing nipple acceptance and feeding in newborns.
OBJECTIVE: 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. PATIENTS AND METHODS: 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. RESULTS: 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. CONCLUSIONS: Diagnosis of this entity is important to exclude facial nerve palsy. Only a physical examination is necessary for a correct diagnosis.