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 |
ASJC Scopus subject areas
- Computer Science Applications
- Cardiology and Cardiovascular Medicine
Fingerprint Dive into the research topics of 'Modifications of autonomic activity and baroreceptor response during tilt-induced vasovagal syncope'. Together they form a unique fingerprint.
Cite this
Cheng, C. A., Lee, J. T., & Chiu, H. W. (2010). Modifications of autonomic activity and baroreceptor response during tilt-induced vasovagal syncope. In Computing in Cardiology (Vol. 37, pp. 943-946). [5738130]