Noninvasive measurement of diameter changes in the distal abdominal aorta in man
(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:
https://lup.lub.lu.se/record/1106650
- author
- Länne, T ; Stale, Håkan LU ; Bengtsson, H ; Gustafsson, D ; Bergqvist, D ; Sonesson, Björn LU ; Lecerof, H and Dahl, P
- organization
- publishing date
- 1992
- 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
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Emergency medicine/Medicine/Surgery (013240200), Pediatrics/Urology/Gynecology/Endocrinology (013240400)
- id
- f8a90122-6bf8-47fa-86c5-b91a9ff7733e (old id 1106650)
- date added to LUP
- 2016-04-01 12:27:52
- date last changed
- 2021-09-19 04:23:56
@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}}, keywords = {{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}}, doi = {{10.1016/0301-5629(92)90084-N}}, volume = {{18}}, year = {{1992}}, }