title: Normal M mode values in healthy Turkish children.
abstract: OBJECTIVE
  Evaluation of cardiac structures requires a large study group for accurate data on normal values. The aim of the study was to obtain normal M mode echocardiographic values in a substantial sample of healthy term neonates and children to develop centile charts.
  
  
  METHODS
  Data were obtained over 2 years from a single center in Turkey, from 1200 healthy infants and children aged 1 day to 17 years. Using echocardiographic investigation, measurements were obtained of the following: left ventricular dimension at end diastole and end systole; thickness of interventricular septum and posterior wall of the left ventricle; aortic and pulmonary root diameter; and left atrial dimension. The influence of systematic errors as statistical noise in this large sample was decreased using third- degree polynomial curves.
  
  
  RESULTS
  Measurements are presented graphically as curved lines of centiles with respect to body weight for healthy term neonates and children. The values showed a good correlation with body weight and allowed the construction of percentile curves (5%, 25%, 50%, 75%, and 95%). Higher values were observed in boys during adolescence.
  
  
  CONCLUSIONS
  The presented charts and tables make it possible to judge the echocardiographic measurements of a particular patient as normal or abnormal.
authors.forename: Bülent
authors.initials: B
authors.lastname: Oran
authors.forename: Abdurrahman Said
authors.initials: AS
authors.lastname: Bodur
authors.forename: Derya
authors.initials: D
authors.lastname: Arslan
authors.forename: Derya
authors.initials: D
authors.lastname: Çımen
authors.forename: Osman
authors.initials: O
authors.lastname: Güvenç
mesh_terms: D002648:Child; D002675:Child, Preschool; D004452:Echocardiography / Q000592:standards; D005260:Female; D006321:Heart / Q000033:anatomy & histology*; D006352:Heart Ventricles / Q000033:anatomy & histology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011446:Prospective Studies; D012016:Reference Values; D014421:Turkey