Background Pediatric facial nerve palsy is acute and mostly idiopathic; other causes are post-infectious forms. Case presentation We describe a rare case of facial nerve palsy associated with COVID-19 in a 5-year-old boy. The diagnosis of post-infectious COVID-19-related facial paralysis was made by serology positivity for a previous infection (IgG positive, IgM and IgA weakly positive), in the presence of a negative molecular nasopharyngeal swab and in the absence of other etiologies. Early treatment with steroids (1 mg/day for 7 days followed by tapering) and supportive care solved the problem. Conclusion In a child with facial paralysis, COVID-19 must be considered as the cause and both nasopharyngeal swab and serology must be performed.

Acute transient respiratory distress in the first hours of life is usually defined as transient tachypnea of the newborn (TTN). TTN is a respiratory self-limiting disorder consequent to delayed lung fluid clearance at birth. While TTN is the most common etiology of respiratory distress near term, its pathogenesis and diagnostic criteria are not well-defined. Lung ultrasound and targeted neonatal echocardiography are increasingly being used to assess critically ill infants, although their combined use to improve diagnostic precision in neonatal intensive care units has not yet been described. This retrospective pilot analysis aimed to identify possible cardiopulmonary ultrasound (CPUS) patterns in term and late preterm infants suffering from transient respiratory distress and requiring non-invasive respiratory support. After retrospectively revising CPUS images, we found seven potential sonographic phenotypes of acute neonatal respiratory distress. Up to 50% of the patients presented with signs of increased pulmonary vascular resistance, suggesting that those patients may be diagnosed with mild forms of persistent pulmonary hypertension of the newborn. Approximately 80% of the infants with a history of meconium-stained amniotic fluid displayed irregular atelectasis, indicating that they may have suffered from mild meconium aspiration syndrome. CPUS evaluation may improve accuracy in the approach to the infants presenting with transient acute respiratory distress, supporting communication with the parents and carrying important epidemiological consequences.

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