| ZAGATINA, Angela, Nadezhda ZHURAVSKAYA, Yuliya VARELDZHYAN, Maxim KAMENSKIKH, Dmitry SHMATOV, Jozef BENACKA, Martin KUCERA and Peter KRUŽLIAK. Transthoracic Coronary Flow Data at Rest Predict High-Risk Stress Tests. Acta Radiologica. London: SAGE Publications Inc., 2018, vol. 59, No 6, p. 664-671. ISSN 0284-1851. Available from: https://dx.doi.org/10.1177/0284185117733143. |
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@article{1453757,
author = {Zagatina, Angela and Zhuravskaya, Nadezhda and Vareldzhyan, Yuliya and Kamenskikh, Maxim and Shmatov, Dmitry and Benacka, Jozef and Kucera, Martin and Kružliak, Peter},
article_location = {London},
article_number = {6},
doi = {http://dx.doi.org/10.1177/0284185117733143},
keywords = {Transthoracic echocardiography; coronary artery Doppler; Doppler flow aliasing; exercise stress echo},
language = {eng},
issn = {0284-1851},
journal = {Acta Radiologica},
title = {Transthoracic Coronary Flow Data at Rest Predict High-Risk Stress Tests},
volume = {59},
year = {2018}
}
TY - JOUR
ID - 1453757
AU - Zagatina, Angela - Zhuravskaya, Nadezhda - Vareldzhyan, Yuliya - Kamenskikh, Maxim - Shmatov, Dmitry - Benacka, Jozef - Kucera, Martin - Kružliak, Peter
PY - 2018
TI - Transthoracic Coronary Flow Data at Rest Predict High-Risk Stress Tests
JF - Acta Radiologica
VL - 59
IS - 6
SP - 664-671
EP - 664-671
PB - SAGE Publications Inc.
SN - 02841851
KW - Transthoracic echocardiography
KW - coronary artery Doppler
KW - Doppler flow aliasing
KW - exercise stress echo
N2 - Background: Several recent studies have reported the opportunity to diagnose significant narrowing of the coronary arteries without stress testing using local flow acceleration. Purpose: To define how often patients with increased coronary flow velocities at rest (>= 0.70 m/s) have a positive exercise echocardiography test. Material and Methods: A total of 150 patients scheduled for exercise echocardiography were studied using transthoracic Doppler echocardiography in order to assess coronary artery flow velocity before exercise. Pulsed wave Doppler registered blood flow velocity placed on the color signal. The maximal diastolic velocity of coronary flow was measured. Results: Of participants, 16% had a velocity of more than 0.70 m/s in the left main/proximal left anterior/proximal left circumflex arteries (LM/pLAD). A significant correlation was observed between the value of the maximal velocity in LM/pLAD and the ejection fraction at the peak of exercise (r approximate to -0.39, P < 0.0001); between the value of the maximal velocity in LM/pLAD and index of wall motion abnormalities (IWMA) at the peak of exercise (r approximate to 0.44, P < 0.0001); and between the value of the maximal velocity in LM/pLAD and dIWMA (r approximate to 0.41, P < 0.0001). Afterwards, severe ischemia in stress echocardiography tests was observed in this group. The average IWMA of these tests was found to be 2.3. Sixty-two angiograms were available for comparison with Doppler data. Conclusion: There is a significant correlation between the value of the maximal velocity in LM/pLAD/pLCx at rest and the severity of wall motion abnormalities during exercise tests.
ER -
ZAGATINA, Angela, Nadezhda ZHURAVSKAYA, Yuliya VARELDZHYAN, Maxim KAMENSKIKH, Dmitry SHMATOV, Jozef BENACKA, Martin KUCERA and Peter KRUŽLIAK. Transthoracic Coronary Flow Data at Rest Predict High-Risk Stress Tests. \textit{Acta Radiologica}. London: SAGE Publications Inc., 2018, vol.~59, No~6, p.~664-671. ISSN~0284-1851. Available from: https://dx.doi.org/10.1177/0284185117733143.
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