title: [Application of the head-up tilt table test in children under 6 years old].
abstract: OBJECTIVE
  To study the clinical value and safety of the head-up tilt table test (HUTT) in children under 6 years old.
  
  
  METHODS
  The HUTT results between September 2000 and August 2011 of 144 2 to 6-year-old children (81 boys and 63 girls) with syncope and dizziness of unknown causes were retrospectively studied.
  
  
  RESULTS
  Eight children completed the based tilt table test and 136 cases completed the sublingual nitroglycerin tilt table test. No serious side effects were found in these children. Thirty-two (22.2%) of the 144 children had a positive result of HUTT, including 18 boys and 14 girls (P>0.05). When HUTT-induced syncope met positive standards, ECG record and blood pressure recovered to normal levels within 5 minutes by changing the position of the test bed, keeping the airway open, nasal oxygen inhalation and oral milk.
  
  
  CONCLUSIONS
  The HUTT is valuable, safe and compliant in children under 6 years old.
authors.affiliation: Department of Cardiovascular Pediatrics, Central South University, Changsha, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Lin
authors.forename: Cheng
authors.initials: C
authors.lastname: Wang
authors.forename: Min-Jing
authors.initials: MJ
authors.lastname: Cao
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Luo
authors.forename: Yi
authors.initials: Y
authors.lastname: Xu
authors.forename: Zhen-Wu
authors.initials: ZW
authors.lastname: Xie
mesh_terms: D000367:Age Factors; D001794:Blood Pressure / Q000187:drug effects; D002648:Child; D002675:Child, Preschool; D004244:Dizziness / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography / Q000187:drug effects; D005260:Female; D006801:Humans; D008297:Male; D005996:Nitroglycerin / Q000494:pharmacology; D012189:Retrospective Studies; D013575:Syncope / Q000175:diagnosis* / Q000503:physiopathology; D018667:Tilt-Table Test
chemical_list: D005996:Nitroglycerin