Nontraumatic aortic blood flow sensing by use of an ultrasonic esophageal probe

The measurement of blood velocity fields, volume flow, and arterial wall motion in the descending thoracic aorta provides essential hemodynamic information for both research and clinical diagnosis. The close proximity of the esophagus to the aorta in the dog makes it possible to obtain such data nonsurgically using an ultrasonic esophageal probe; however, the accuracy of such a probe is limited if the angle between the sound beam and the flow axis, known as the Doppler angle, is not precisely known. By use of a pulsed Doppler velocity meter (PUDVM) and a triangulation procedure, accurate empirical measurement of the Doppler angle has been obtained, allowing quantification of blood velocity scans across the aorta. Volume flow is obtained by integration of blood velocity profiles and arterial wall motion is measured with an ultrasonic echo tracking device. Accuracy of the probe was substantiated by comparison with ultrasonic and electromagnetic implanted flow cuff measurements. Use of the probe in measurement of blood velocity, volume flow and arterial wall motion at various locations along the 8- and 10-cm length of the descending thoracic aorta in adult beagle dogs is detailed. The simplicity, accuracy, and nontraumatic aspect of the technique should allow increasing use of such a probe in numerous research and clinical applications.

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Atherosclerosis and Its Effect on Thoracic Aorta Wall Motion and Peripheral Blood Velocity Patterns

10.1109/ultsym.1973.196151 ◽

1973 ◽

Cited By ~ 1

Author(s):

C.W. Miller ◽

M.B. Histand ◽

D.E. Hokanson ◽

F.D. McLeod ◽

R.E. Daigle

Keyword(s):

Thoracic Aorta ◽

Peripheral Blood ◽

Wall Motion ◽

Blood Velocity ◽

Aorta Wall

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Venous ultrasound catheter-tip technique for evaluation of arterial hemodynamics

Journal of Applied Physiology ◽

10.1152/jappl.1976.41.6.946 ◽

1976 ◽

Vol 41 (6) ◽

pp. 946-952 ◽

Cited By ~ 1

Author(s):

R. C. Nealeigh ◽

C. W. Miller ◽

F. D. McLeod

Keyword(s):

Wall Motion ◽

Arterial Wall ◽

Evaluation Studies ◽

Doppler Velocity ◽

Flow Properties ◽

Iliac Arteries ◽

Arterial Hemodynamics ◽

Velocity Flow ◽

Catheter Tip ◽

Pulsed Ultrasonic

A variety of devices has been used for measuring flow properties of deep-lying arteries, but many have limitations. This paper describes a relatively nontraumatic intravenous approach which uses a catheter in connection with a pulsed ultrasonic Doppler velocity meter (PUDVM) and an ultrasound echo track. The venous ultrasound catheter (VUC) has permitted measurements oflocal instantaneols blood velocity, flow, and wall motion in the abdominal aorta and iliac arteries of beagle dogs; evaluation studies have been conducted to compare the VUC recordings with an independent method for measuringblood flow and wall motion. Coupling of this catheter-tip device with the PUDVM and echo track provides chronic measurements of hemodynamic parametersin these deep vessels which were virtually impossible to obtain previously.This technique may prove useful in monitoring vessel pathology longitudinally as well as in basic experimental situations requiring flow and arterial wall mechanical properties.

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Management of thoracic aortic lesions - the future is endovascular

VASA ◽

10.1024/0301-1526/a000183 ◽

2012 ◽

Vol 41 (3) ◽

pp. 163-176 ◽

Cited By ~ 6

Author(s):

Weidenhagen ◽

Bombien ◽

Meimarakis ◽

Geisler ◽

A. Koeppel

Keyword(s):

Thoracic Aorta ◽

Clinical Decision Making ◽

Treatment Options ◽

Clinical Decision ◽

Clinical Results ◽

Treatment Modalities ◽

Traumatic Rupture ◽

Descending Thoracic Aorta ◽

New Treatment ◽

Aneurysm Dissection

Open surgical repair of lesions of the descending thoracic aorta, such as aneurysm, dissection and traumatic rupture, has been the state-of-the-art treatment for many decades. However, in specialized cardiovascular centers, thoracic endovascular aortic repair and hybrid aortic procedures have been implemented as novel treatment options. The current clinical results show that these procedures can be performed with low morbidity and mortality rates. However, due to a lack of randomized trials, the level of reliability of these new treatment modalities remains a matter of discussion. Clinical decision-making is generally based on the experience of the vascular center as well as on individual factors, such as life expectancy, comorbidity, aneurysm aetiology, aortic diameter and morphology. This article will review and discuss recent publications of open surgical, hybrid thoracic aortic (in case of aortic arch involvement) and endovascular repair in complex pathologies of the descending thoracic aorta.

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Penetrating atherosclerotic ulcer aneurysm of the innominate artery

VASA ◽

10.1024/0301-1526.38.3.263 ◽

2009 ◽

Vol 38 (3) ◽

pp. 263-266 ◽

Cited By ~ 1

Author(s):

Yuan ◽

Tager

Keyword(s):

Conservative Treatment ◽

Thoracic Aorta ◽

Open Surgery ◽

Innominate Artery ◽

Ruptured Aneurysm ◽

Descending Thoracic Aorta ◽

Penetrating Atherosclerotic Ulcer ◽

Descending Aorta

Penetrating atherosclerotic ulcer of the aorta is uncommon, and usually develops in the descending thoracic aorta. Rarely this condition involves the branch vessels of the aorta. We report a case of ruptured aneurysm of the innominate artery resulting from penetrating atherosclerotic ulcer. Open surgery was the treatment of choice for the ruptured aneurysm, while conservative treatment was recommended for the associated penetrating atherosclerotic ulcers of the descending aorta.

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