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Journal of the Korean Child Neurology Society 2012;20(4):201-208.
Published online December 30, 2012.
Initial Orthostatic Hypotension is Possibly Associated with Autonomic Dysfunction when Diagnosed with a Tilt Table Test.
Jae Young Cho, Hong Seop Yeom, Jung Sook Yeom, Ji Sook Park, Ji Hyun Seo, Eu Sil Park, Jae Young Lim, Chan Hoo Park, Hyang Ok Woo, Hee Shang Youn, Ki Jong Park
1Department of Pediatrics, Gyeongsang National University School of Medicine, Jinju, Korea. polo96@daum.net
2Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea.
3Gyeongsang Institute of Health Science, Jinju, Korea.
Abstract
PURPOSE
Initial orthostatic hypotension is typically associated with active standing and normal autonomic function. Some adolescents in the present study displayed initial orthostatic hypotension during passive tilting, and we hypothesized that this condition was due to abnormal autonomic function. METHODS: The present study compared autonomic functioning in two groups of adolescents: patients with a diagnosis of initial orthostatic hypotension according to the tilt table test and patients with typical symptoms of initial orthostatic hypotension but normal tilt table test results. RESULTS: Significantly higher total composite autonomic severity scores and considerably higher adrenergic index were noted in the tilt table tested group. CONCLUSION: Initial orthostatic hypotension is possibly associated with autonomic dysfunction, especially abnormal vasoconstrictive ability, in individuals diagnosed with a tilt table test. Clinicians should take note of autonomic function when performing diagnoses of initial orthostatic hypotension using the tilt table test.
Key Words: Initial orthostatic hypotension, Autonomic dysfunction, Tilt table test
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