title: [Supraventricular tachycardia in newborns and its association with gastroesophageal reflux disease].
abstract: BACKGROUND
  Supraventricular tachycardia (SVT) is the most common arrhythmia in the neonatal period, but its association with other triggering processes is not well established. The aim of the study was to analyse the possible relationship between neonatal SVT and gastroesophageal reflux disease (GERD), a condition which was recently linked to atrial arrhythmias.
  
  
  METHODS
  A retrospective longitudinal descriptive study was conducted over a period of 5years on newborns who were diagnosed with SVT in a level III neonatal unit, assessing morphological aspects, associated symptoms, and treatments received. Its association with GERD and the impact of this on SVT was studied.
  
  
  RESULTS
  Eighteen patients (1.2 per 1000 newborns) were diagnosed with SVT. Fifty percent of them were combined with clinically significant GERD (P=.01), and all of them received drug treatment. The average time of control of SVT without GERD since diagnosis was 6 days (95% CI: 2.16-9.84, with a median of 3) and 7.6 days when both pathologies were present (95% CI: 4.14-10.9, with a median of 7) (P=.024).
  
  
  CONCLUSIONS
  Patients with SVT in the neonatal period frequently have GERD, and this combination leads to more difficulty in controlling the tachycardia. The reflux could act as a trigger or perpetuator of arrhythmia, therefore it is important to find and treat GERD in infants with SVT.
authors.affiliation: Servicio de Neonatología, Departamento de Pediatría, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, España.
authors.forename: Ángeles
authors.initials: Á
authors.lastname: Fuertes
authors.affiliation: Servicio de Neonatología, Departamento de Pediatría, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, España. Electronic address: drayham@live.com.
authors.forename: Ayham
authors.initials: A
authors.lastname: Alshweki
authors.affiliation: Servicio de Neonatología, Departamento de Pediatría, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, España.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Pérez-Muñuzuri
authors.affiliation: Servicio de Neonatología, Departamento de Pediatría, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, España.
authors.forename: María-Luz
authors.initials: ML
authors.lastname: Couce
mesh_terms: D005260:Female; D005764:Gastroesophageal Reflux / Q000150:complications*; D006801:Humans; D007231:Infant, Newborn; D008137:Longitudinal Studies; D008297:Male; D012189:Retrospective Studies; D013617:Tachycardia, Supraventricular / Q000209:etiology*
keywords: Arrhythmia; Arritmia; Gastroesophageal reflux disease; Newborn; Recién nacido; Reflujo gastroesofágico; Supraventricular tachycardia; Taquicardia supraventricular