title: Clinical value of Tei index in pediatric patients with repaired tetralogy of Fallot.
abstract: OBJECTIVE
  Tetralogy of Fallot is a congenital heart disease characterized by underdevelopment of the right ventricular infundibulum. Present study aimed to explore the clinic value of Tei index in assessing right ventricular function of pediatric patients with repaired Tetralogy of Fallot.
  
  
  METHODS
  A total of 45 pediatric patients with repaired Tetralogy of Fallot were recruited and classified into: group A (Tei index <0.5; n=13, aging 2-12 years), group B (0.5< Tei index <0.7; n=19, aging 1-14 years), and group C (Tei index >0.7; n=13, aging 4-14 years). The right ventricular Tei index value was related to the clinical characteristics of Tetralogy of Fallot repair patients.
  
  
  RESULTS
  Right ventricular Tei index was positively correlated with ventilation time, drainage volumes, and negatively with drug assistance and Intensive Care Unit (ICU) stay, although time for drug assistance and ICU stay were not statically different between group B and group C. There was no significant difference in left ventricular ejection fraction.
  
  
  CONCLUSIONS
  Tei index is a sensitive indicator of right ventricular dysfunction, and has important clinical value to better our understanding of right ventricular function after tetralogy of Fallot repair.
authors.affiliation: Department of Cardiovascular Surgery, First Hospital of Lanzhou University Lanzhou 730000, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Song
authors.affiliation: Department of Cardiovascular Surgery, First Hospital of Lanzhou University Lanzhou 730000, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Qi
authors.affiliation: Department of Cardiovascular Surgery, First Hospital of Lanzhou University Lanzhou 730000, China.
authors.forename: Ruisheng
authors.initials: R
authors.lastname: Liu
authors.affiliation: Department of Cardiovascular Surgery, First Hospital of Lanzhou University Lanzhou 730000, China.
authors.forename: Wang
authors.initials: W
authors.lastname: Xing
authors.affiliation: Department of Cardiovascular Surgery, First Hospital of Lanzhou University Lanzhou 730000, China.
authors.forename: Hanbo
authors.initials: H
authors.lastname: Tang
authors.affiliation: Department of Cardiovascular Surgery, First Hospital of Lanzhou University Lanzhou 730000, China.
authors.forename: Yuanmin
authors.initials: Y
authors.lastname: Li
keywords: Tei index; intensive care unit (ICU); right ventricle function; tetralogy of Fallot