TY - JOUR
T1 - Analysis of Systolic Backflow and Secondary Helical Blood Flow in the Ascending Aorta Using Vector Flow Imaging
AU - Hansen, Kristoffer Lindskov
AU - Møller-Sørensen, Hasse
AU - Kjaergaard, Jesper
AU - Jensen, Maiken Brit
AU - Teglgaard Lund, Jens
AU - Pedersen, Mads Møller
AU - Lange, Theis
AU - Arendt Jensen, Jørgen
AU - Nielsen, Michael Bachmann
N1 - Copyright © 2016 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Secondary rotational flow and systolic backflow are seen in the ascending aorta and, in this study, were analyzed with the vector velocity method transverse oscillation. Twenty-five patients were scanned intra-operatively, and the vector velocities were related to estimates of transesophageal echocardiography and pulmonary artery catheter thermodilution, and associated with gender, age, aortic diameter, atherosclerotic plaques, left ventricular ejection fraction and previous myocardial infarctions. Secondary flow was present for all patients. The duration and rotational frequency (p < 0.001) and the duration and flow direction of the secondary flow (p < 0.002) were associated. Systolic backflow was present in 40% of the patients and associated with systolic velocities (p < 0.002) and the presence of atherosclerotic plaques (p < 0.001). No other significant associations were observed. The study indicates that backflow is injurious and that secondary flow is a normal flow phenomenon. The study also shows that transverse oscillation can provide new information on blood flow in the ascending aorta.
AB - Secondary rotational flow and systolic backflow are seen in the ascending aorta and, in this study, were analyzed with the vector velocity method transverse oscillation. Twenty-five patients were scanned intra-operatively, and the vector velocities were related to estimates of transesophageal echocardiography and pulmonary artery catheter thermodilution, and associated with gender, age, aortic diameter, atherosclerotic plaques, left ventricular ejection fraction and previous myocardial infarctions. Secondary flow was present for all patients. The duration and rotational frequency (p < 0.001) and the duration and flow direction of the secondary flow (p < 0.002) were associated. Systolic backflow was present in 40% of the patients and associated with systolic velocities (p < 0.002) and the presence of atherosclerotic plaques (p < 0.001). No other significant associations were observed. The study indicates that backflow is injurious and that secondary flow is a normal flow phenomenon. The study also shows that transverse oscillation can provide new information on blood flow in the ascending aorta.
U2 - 10.1016/j.ultrasmedbio.2015.11.029
DO - 10.1016/j.ultrasmedbio.2015.11.029
M3 - Journal article
C2 - 26774468
SN - 0301-5629
VL - 42
SP - 899
EP - 908
JO - Ultrasound in Medicine & Biology
JF - Ultrasound in Medicine & Biology
IS - 4
ER -