title: Effect of birth asphyxia on p wave dispersion.
abstract: OBJECTIVE
  To evaluate the cardiac conduction system using P wave dispersion on electrocardiogram and its relationship with the short term mortality and development of arrhythmia in asphyxiated neonates.
  
  
  METHODS
  Thirty term babies with evidence of asphyxia and without any congenital abnormalities were consecutively evaluated as cases. They were compared with thirty healthy term babies without asphyxia. Twelve-lead surface electrocardiography was obtained from all the patients and the controls, and P wave dispersion was calculated according to its definition as the difference between P maximum duration and P minimum duration in 12-lead electrocardiogram.
  
  
  RESULTS
  A statically significant difference of P wave dispersion was observed between the patients and the control group (0.027 ± 0.011 mm/s and 0.016 ± 0.006 mm/s, respectively; P value = 0.0001). The P wave dispersion had a statistically significant correlation with the grade of asphyxia (P = 0.004, r = 0.62), the P wave dispersion had no statistically significant correlation with Apgar scores, short term arrhythmia, and troponin I level in asphyxiated neonates (P < 0.05).
  
  
  CONCLUSIONS
  The P wave dispersion increased in asphyxiated neonates and correlated with grade of asphyxia; however, the increased P wave dispersion was not correlated with the short term mortality, arrhythmia and troponin I level of the asphyxiated neonates.
authors: Neonatology Research Center, Department of Pediatrics, Shiraz University of Medical Sciences, Namazi Hospital, 7193711351, Shiraz, Iran, amozgah@sums.ac.ir.
authors: Hamid
authors: H
authors: Amoozgar
authors: Monirosadat
authors: M
authors: Barekati
authors: Nahal
authors: N
authors: Farhani
authors: Narjes
authors: N
authors: Pishva
mesh_terms: D001145:Arrhythmias, Cardiac / Q000209:etiology; D001238:Asphyxia Neonatorum / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male
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