title: Transient complete atrioventricular block in a preterm neonate with congenital myotonic dystrophy: case report.
abstract: Congenital myotonic dystrophy (CMD) is an inherited neuromuscular disorder with cardiac rhythm abnormalities that may occur as a child grows. No report has described complete atrioventricular (AV) block detected in a neonate with CMD. We report a floppy infant of 31(+4) weeks gestation with complete AV block at birth, who was diagnosed with CMD by Southern analysis. She recovered from complete AV block 32 hr after temporary transcutaneous pacing was applied. To the best our knowledge, this is the first recorded case of a complete AV block accompanied by CMD during the neonatal period. When a newborn has a complete AV block, the physician should consider the possibility of the CMD and conduct a careful physical examination.
authors.affiliation: Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Hee Na
authors.identifier: 0000-0001-7079-9012
authors.initials: HN
authors.lastname: Kim
authors.affiliation: Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Young Kuk
authors.identifier: 0000-0001-6811-2883
authors.initials: YK
authors.lastname: Cho
authors.affiliation: Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Joo Hyun
authors.initials: JH
authors.lastname: Cho
authors.affiliation: Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Eun Mi
authors.initials: EM
authors.lastname: Yang
authors.affiliation: Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Eun Song
authors.identifier: 0000-0003-1056-2165
authors.initials: ES
authors.lastname: Song
authors.affiliation: Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Young Youn
authors.initials: YY
authors.lastname: Choi
mesh_terms: D020413:3' Untranslated Regions; D054537:Atrioventricular Block / Q000150:complications / Q000175:diagnosis*; D001785:Blood Gas Monitoring, Transcutaneous; D002899:Chromosomes, Human, Pair 9; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009223:Myotonic Dystrophy / Q000150:complications / Q000175:diagnosis* / Q000235:genetics; D065636:Myotonin-Protein Kinase / Q000235:genetics; D018911:Trinucleotide Repeats
chemical_list: D020413:3' Untranslated Regions; C585517:DMPK protein, human; D065636:Myotonin-Protein Kinase
keywords: Complete Atrioventricular Block; Congenital Myotonic Dystrophy; Pacing