Abstract
Vasovagal syncope (VVS) is diagnosed by medical history and confirmed by head-up tilt (HUT) test. In this study, we attempted to examine this controversy by evaluating heart rate variability and baroreceptor sensitivity in VVS during upright posture. The VVS subjects had lower total peripheral vascular resistance at baseline supine and HUT position. During HUT test, the VVS subjects had increased LF/HF ratio and decreased baroreceptor sensitivity. In conclusion, VVS subjects demonstrated vascular sympathetic dysfunction and postural cardiac sympathetic hyperactivity. The decreased baroreceptor sensitivity may explain in part the failure of the usual compensatory heart rate increase during orthostatic challenge.
| Original language | English |
|---|---|
| Title of host publication | Computing in Cardiology |
| Pages | 943-946 |
| Number of pages | 4 |
| Volume | 37 |
| Publication status | Published - 2010 |
| Event | Computing in Cardiology 2010, CinC 2010 - Belfast, United Kingdom Duration: Sep 26 2010 → Sep 29 2010 |
Other
| Other | Computing in Cardiology 2010, CinC 2010 |
|---|---|
| Country | United Kingdom |
| City | Belfast |
| Period | 9/26/10 → 9/29/10 |
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ASJC Scopus subject areas
- Computer Science Applications
- Cardiology and Cardiovascular Medicine
Cite this
Modifications of autonomic activity and baroreceptor response during tilt-induced vasovagal syncope. / Cheng, Chun An; Lee, Jiunn Tay; Chiu, Hung Wen.
Computing in Cardiology. Vol. 37 2010. p. 943-946 5738130.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Modifications of autonomic activity and baroreceptor response during tilt-induced vasovagal syncope
AU - Cheng, Chun An
AU - Lee, Jiunn Tay
AU - Chiu, Hung Wen
PY - 2010
Y1 - 2010
N2 - Vasovagal syncope (VVS) is diagnosed by medical history and confirmed by head-up tilt (HUT) test. In this study, we attempted to examine this controversy by evaluating heart rate variability and baroreceptor sensitivity in VVS during upright posture. The VVS subjects had lower total peripheral vascular resistance at baseline supine and HUT position. During HUT test, the VVS subjects had increased LF/HF ratio and decreased baroreceptor sensitivity. In conclusion, VVS subjects demonstrated vascular sympathetic dysfunction and postural cardiac sympathetic hyperactivity. The decreased baroreceptor sensitivity may explain in part the failure of the usual compensatory heart rate increase during orthostatic challenge.
AB - Vasovagal syncope (VVS) is diagnosed by medical history and confirmed by head-up tilt (HUT) test. In this study, we attempted to examine this controversy by evaluating heart rate variability and baroreceptor sensitivity in VVS during upright posture. The VVS subjects had lower total peripheral vascular resistance at baseline supine and HUT position. During HUT test, the VVS subjects had increased LF/HF ratio and decreased baroreceptor sensitivity. In conclusion, VVS subjects demonstrated vascular sympathetic dysfunction and postural cardiac sympathetic hyperactivity. The decreased baroreceptor sensitivity may explain in part the failure of the usual compensatory heart rate increase during orthostatic challenge.
UR - http://www.scopus.com/inward/record.url?scp=79953831725&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79953831725&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79953831725
SN - 9781424473182
VL - 37
SP - 943
EP - 946
BT - Computing in Cardiology
ER -