Transplacental lidocaine intoxication

Article type: Case Report

Authors: Demeulemeester, V.^{a; *} | Van Hautem, H.^b | Cools, F.^a | Lefevere, J.^a

Affiliations: [a] Neonatology, UZ Brussel, Vrije Universiteit Brussel (VUB), Jette, Belgium | [b] Pediatrics, Saint-Maria Hospital, Halle, Belgium

Correspondence: [*] Address for correspondence: Veronique Demeulemeester, B-2650 Edegem, Fort V-straat 50/2, Belgium. Tel.: +32 496687085; Fax: +32 3 821 48 02; E-mail: [email protected].

Abstract: Neonatal seizures are frequent in neonatal intensive care and the most common cause is perinatal asphyxia. Among other causes, toxin exposure is rare. We present a boy with an uneventful vaginal birth, who presented one hour after birth with apnea, hypotonia, mydriasis, tongue fasciculation, and tonic seizures. There was no hypoxic ischemic encephalopathy and brain imaging was normal. Toxicology screening revealed a toxic concentration of lidocaine in his blood. The intoxication was transplacental, as a cord blood sample confirmed the toxic level. This was probably due to maternal perineal nerve block with lidocaine. Perineal local infiltration of lidocaine is not without risk for the newborn. Toxicology screen remains an important tool in the work-up of neonatal seizures and sudden unexpected postnatal collapse.

DOI: 10.3233/NPM-1791

Journal: Journal of Neonatal-Perinatal Medicine, vol. 11, no. 4, pp. 439-441, 2018