| Pulsed wave Doppler ultrasonography for the assessment of peripheral vasomotor response in an elderly population. | |
| | |
MedLine Citation:
|
PMID: 21656779 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
PURPOSE: To assess sympathetic vasomotor activity and its changes with age, using pulsed wave Doppler ultrasound. METHODS: We recruited 20 young adults (24-37 years old) and 20 older individuals (60-81 years old). Pulsed wave Doppler ultrasound was applied over the right radial artery to measure blood flow at rest and after a voluntary inspiratory cough eliciting sympathetic activation. The maximal (Vmax), minimal (Vmin), time-averaged (TAMaxV) blood flow velocity, and the pulsatility index (PI) were calculated and compared between groups. RESULTS: At rest, PI was similar in both groups but Vmax and TAMaxV were higher in the older group (p < 0.05). Vmax, Vmin, and TAMaxV decreased, and PI increased after inspiratory cough in both groups (p ≤ 0.001), but this increase was lower in the older group (p < 0.001). TAMaxV after coughing was higher in the older group (p < 0.05). Heart rate did not differ significantly within or between groups. CONCLUSIONS: The older group exhibited reduced vasomotor reactivity of the radial artery after sympathetic stimulus. Peripheral vasomotor response should be interpreted with caution in elderly populations. © 2011 Wiley Periodicals, Inc. J Clin Ultrasound, 2011. |
| | |
Authors:
|
Ke-Vin Chang; Chueh-Hung Wu; Tyng-Guey Wang; Ming-Yen Hsiao; Tian-Shin Yeh; Wen-Shiang Chen |
Related Documents
:
|
8920819 - Hiv colonizing peripheral blood monocytes follows lymphocytic isolates in shifting from... 3979219 - Flow cytometric enumeration of absolute lymphocyte number in peripheral blood using two... 5547059 - The mediator of cellular immunity. 3. lymphocyte traffic from the blood into the inflam... 9133479 - Effect of one-hla-haplotype-matched and hla-mismatched blood transfusions on recipient ... 8334439 - Human peripheral lymphocytes as indicators of microsomal epoxide hydrolase activity in ... 312599 - I. depressed immunological function in zinc-deprived rats as measured by mitogen respon... 17023839 - How many ligations of bilateral segmental arteries cause ischemic spinal cord dysfuncti... 8905779 - Intraoperative use of electroencephalography as an assessment of cerebral blood flow. 176889 - Neurohormonal control of gonadotropic secretion in primates. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-6-8 |
Journal Detail:
|
Title: Journal of clinical ultrasound : JCU Volume: - ISSN: 1097-0096 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
|
Created Date: 2011-6-9 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0401663 Medline TA: J Clin Ultrasound Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011 Wiley Periodicals, Inc. |
Affiliation:
|
Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital and National Taiwan University College of Medicine, No. 7, Chun-San S. Rd., Taipei, 100, Taiwan, ROC. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Differences in two-dimensional gel electrophoresis patterns of skeletal muscle myosin light chain is...
Next Document: Value of contrast-enhanced sonography with micro flow imaging in the diagnosis of prostate cancer.