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J Korean Neurol Assoc. 2014;32(3):145-149.
- Correlation Between Orthostatic Symptoms and Autonomic
Parameters During the Head-Up Tilt Test
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Hyun Ah Kim
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Correlation Between Orthostatic Symptoms and Autonomic
Parameters During the Head-Up Tilt Test
- 기립경사검사 동안 발생하는 기립 증상들과 자율신경
지표들 간의 상관관계
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김현아
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계명대학교 의과대학 신경과학교실
- Abstract
- Background
The aims of the present study were to identify the orthostatic symptoms occurring during the head-up tilt
(HUT) test and to compare the autonomic parameters in patients with and without symptoms during the HUT test.
Methods
We retrospectively collected autonomic data from patients presenting with autonomic symptoms including
orthostatic dizziness over a 1-year period. A standardized battery of autonomic tests was performed, including the HUT
test, Valsalva maneuver (VM), heart rate (HR) deep breathing test, and quantitative sudomotor axon reflex test (QSART)
using Finometer devices to record the beat-to-beat blood pressure (BP) and HR response. We also investigated the
patients’ symptoms during the HUT test and compared the autonomic parameters between patients with and without
orthostatic symptoms.
Results
In total, 898 patients who submitted to autonomic function tests were included in this study. Of these, 17%
(157/898) complained of various kinds of symptoms during tilting, while the remainder denied any symptoms. Patients
complained of atypical symptoms, such as leg or back pain, tingling sensation in the leg, and difficulty breathing or chest
tightness, as well as typical orthostatic symptoms. The BP decrease and the HR increase during the HUT test were greater
in the symptomatic group. A prolonged pressure recovery time during VM, a lower sweat output during QSART, and a
higher composite autonomic severity score were observed in the symptomatic group.
Conclusions
Approximately one-fifth of the patients complained of symptoms during the HUT test, and those
symptoms were strongly correlated with the autonomic parameters suggestive of impaired compensative mechanisms
in response to a BP fall.
Keywords :
- 초록
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