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Noninvasive measurement of diameter changes in the distal abdominal aorta in man

Länne, T; Stale, Håkan LU ; Bengtsson, H; Gustafsson, D; Bergqvist, D; Sonesson, Björn LU ; Lecerof, H and Dahl, P (1992) In Ultrasound in Medicine and Biology 18(5). p.451-457
Abstract
An ultrasound phase-locked, echo-tracking system was used to determine the dynamic properties of the distal abdominal aorta in 10 Caucasian male subjects (mean age, 25 years). Recordings were made at rest and during the blood pressure increase resulting from isometric exercise. The pressure diameter curve was nonlinear with an inflection at about 90-110 mmHg. Above this pressure range, the vessel was stiffer (less compliant), but the pressure diameter relationship was roughly linear above as well as below the inflection. Individual pressure diameter curves showed hysteresis, i.e., the aorta had a smaller diameter during expansion than during retraction at corresponding pressures. The pressure strain elastic modulus (Ep) and stiffness... (More)
An ultrasound phase-locked, echo-tracking system was used to determine the dynamic properties of the distal abdominal aorta in 10 Caucasian male subjects (mean age, 25 years). Recordings were made at rest and during the blood pressure increase resulting from isometric exercise. The pressure diameter curve was nonlinear with an inflection at about 90-110 mmHg. Above this pressure range, the vessel was stiffer (less compliant), but the pressure diameter relationship was roughly linear above as well as below the inflection. Individual pressure diameter curves showed hysteresis, i.e., the aorta had a smaller diameter during expansion than during retraction at corresponding pressures. The pressure strain elastic modulus (Ep) and stiffness (beta) were at rest [Mean Arterial Pressure (MAP), 81 mmHg] 0.70 10(5) N/m2 and 6.0, respectively. During isometric exercise (MAP, 122 mmHg), Ep increased significantly by 91% and stiffness (beta) nonsignificantly by 27%. The variability of the compliance determinations was 5% when the ultrasonic system was combined with intra-arterial blood pressure measurements and less than 7% when combined with auscultatory blood pressure measurements. It is concluded that the phase-locked, echo-tracking system fulfills clinical requirements for routine measurements of vascular compliance. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ultrasound, Ultrasonic echo tracking, Aorta, Aortic diameter, Arterial blood pressure, Compliance, Elastic modulus
in
Ultrasound in Medicine and Biology
volume
18
issue
5
pages
451 - 457
publisher
Elsevier
external identifiers
  • pmid:1509620
  • scopus:0026717554
ISSN
0301-5629
DOI
10.1016/0301-5629(92)90084-N
language
English
LU publication?
yes
id
f8a90122-6bf8-47fa-86c5-b91a9ff7733e (old id 1106650)
date added to LUP
2008-08-04 11:05:55
date last changed
2017-08-13 03:45:35
@article{f8a90122-6bf8-47fa-86c5-b91a9ff7733e,
  abstract     = {An ultrasound phase-locked, echo-tracking system was used to determine the dynamic properties of the distal abdominal aorta in 10 Caucasian male subjects (mean age, 25 years). Recordings were made at rest and during the blood pressure increase resulting from isometric exercise. The pressure diameter curve was nonlinear with an inflection at about 90-110 mmHg. Above this pressure range, the vessel was stiffer (less compliant), but the pressure diameter relationship was roughly linear above as well as below the inflection. Individual pressure diameter curves showed hysteresis, i.e., the aorta had a smaller diameter during expansion than during retraction at corresponding pressures. The pressure strain elastic modulus (Ep) and stiffness (beta) were at rest [Mean Arterial Pressure (MAP), 81 mmHg] 0.70 10(5) N/m2 and 6.0, respectively. During isometric exercise (MAP, 122 mmHg), Ep increased significantly by 91% and stiffness (beta) nonsignificantly by 27%. The variability of the compliance determinations was 5% when the ultrasonic system was combined with intra-arterial blood pressure measurements and less than 7% when combined with auscultatory blood pressure measurements. It is concluded that the phase-locked, echo-tracking system fulfills clinical requirements for routine measurements of vascular compliance.},
  author       = {Länne, T and Stale, Håkan and Bengtsson, H and Gustafsson, D and Bergqvist, D and Sonesson, Björn and Lecerof, H and Dahl, P},
  issn         = {0301-5629},
  keyword      = {Ultrasound,Ultrasonic echo tracking,Aorta,Aortic diameter,Arterial blood pressure,Compliance,Elastic modulus},
  language     = {eng},
  number       = {5},
  pages        = {451--457},
  publisher    = {Elsevier},
  series       = {Ultrasound in Medicine and Biology},
  title        = {Noninvasive measurement of diameter changes in the distal abdominal aorta in man},
  url          = {http://dx.doi.org/10.1016/0301-5629(92)90084-N},
  volume       = {18},
  year         = {1992},
}