Document Detail


Blood flow velocity waveform in the common carotid artery and its analysis in elderly subjects.
MedLine Citation:
PMID:  1498566     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated common carotid artery blood flow in 99 elderly nursing home residents using an ultrasonic quantitative blood flow measurement system. Systolic velocity and end-diastolic velocity were obtained from the waveform and classified, using the end-diastolic/systolic volume as Type A which is normal flow (greater than 20% bilaterally), Type B which is unilateral decreased flow (less than 20% unilaterally), Type C which is bilateral decreased flow (less than 20% bilaterally), Type D which is Type C plus a saw tooth pattern and Type E which is no diastolic pattern, i.e. a value of 0 unilaterally or bilaterally. Five per cent of subjects showed Type A of blood flow velocity waveform (normal flow pattern) and about 40% showed Type E (no diastolic pattern). The subjects were divided into three groups according to blood flow velocity waveform. Groups 1, 2 and 3 showed Types A or B, C or D, and E, respectively. The total blood flow volume and mean blood flow velocity of Group 1 were significantly higher than those of Groups 2 and 3 in both the supine and sitting positions. Although both total blood flow volume and mean blood flow velocity of Group 1 decreased significantly in postural change, those of Groups 2 and 3 did not change. These results suggest that total blood flow volume and mean blood flow velocity decrease in proportion to changes in the blood flow velocity waveform.
Authors:
I Nagatomo; M Nomaguchi; K Matsumoto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical autonomic research : official journal of the Clinical Autonomic Research Society     Volume:  2     ISSN:  0959-9851     ISO Abbreviation:  Clin. Auton. Res.     Publication Date:  1992 Jun 
Date Detail:
Created Date:  1992-09-14     Completed Date:  1992-09-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9106549     Medline TA:  Clin Auton Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  197-200     Citation Subset:  IM    
Affiliation:
Department of Neuropsychiatry, Faculty of Medicine, Kagoshima University, Japan.
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Aging / physiology*
Blood Flow Velocity*
Blood Pressure*
Carotid Arteries / growth & development,  physiology*,  physiopathology
Cerebrovascular Disorders / physiopathology
Diastole
Female
Heart Rate
Humans
Male
Muscle Development
Muscle, Smooth, Vascular / growth & development,  physiology*,  physiopathology
Posture
Reference Values
Supine Position
Systole

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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