title: [Application of Xstrain in the evaluation of heart function in children with tonsil adenoidal hypertrophy].
abstract: OBJECTIVE
  To study the value of Xstrain technology in the evaluation of cardiac function in children with tonsil adenoidal hypertrophy (TAH).
  
  
  METHODS
  Thirty-five children with TAH (TAH group) and 20 normal age-matched children (control group) were enrolled. The left ventricular wall movement in the vertical, radial and circumferential directions and the right ventricular tricuspid annulus movement were detected using Xstrain technology.
  
  
  RESULTS
  The systolic and early diastolic velocities of tricuspid annulus in the TAH group were higher than those in the control group. The systolic and diastolic circumferential velocities of the middle lateral wall and back wall of left ventricular in the TAH group were lower than those in the control group. The systolic and early diastolic vertical velocities of the basement of left ventricular wall in the TAH group were higher than those in the control group. There was no significant difference in the radial velocity between the two groups.
  
  
  CONCLUSIONS
  Early changes in the cardiac function can be found by Xstrain technology in children with TAH. Xstrain technology can provide a reliable basis for cardiovascular evaluation in children with TAH.
authors.affiliation: Department of Ultrasound, First Hospital of Jilin University, Changchun, China.
authors.forename: Li
authors.initials: L
authors.lastname: Mei
authors.forename: Xiao-Ying
authors.initials: XY
authors.lastname: Yang
authors.forename: Run-Lan
authors.initials: RL
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Dan
authors.initials: D
authors.lastname: Ge
mesh_terms: D000234:Adenoids / Q000473:pathology*; D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006334:Heart Function Tests / Q000379:methods*; D006801:Humans; D006984:Hypertrophy; D008297:Male