Alterations of phasic coronary artery flow velocity in humans during percutaneous coronary angioplasty.

@article{Segal1992AlterationsOP,
  title={Alterations of phasic coronary artery flow velocity in humans during percutaneous coronary angioplasty.},
  author={J. Segal and M. Kern and N. A. Scott and S. King and J. W. Doucette and R. Heuser and E. Ofili and R. Siegel},
  journal={Journal of the American College of Cardiology},
  year={1992},
  volume={20 2},
  pages={
          276-86
        }
}
BACKGROUND AND OBJECTIVES Studies using Doppler catheters to assess blood flow velocity and vasodilator reserve in proximal coronary arteries have failed to demonstrate significant improvement immediately after coronary angioplasty. Measurement of blood flow velocity, flow reserve and phasic diastolic/systolic velocity ratio performed distal to a coronary stenosis may provide important information concerning the physiologic significance of coronary artery stenosis. This study was designed to… Expand
Applications of coronary flow velocity during angioplasty and other coronary interventional procedures.
  • J. Segal
  • Medicine
  • The American journal of cardiology
  • 1993
TLDR
Measurement of blood flow velocity, flow reserve, and the phasic diastolic/systolic velocity ratio in the distal coronary artery has been performed following various interventional procedures utilizing a low profile Doppler angioplasty guidewire to prove useful in clinical decision making. Expand
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Analysis of coronary blood flow velocity dynamics in angiographically normal and stenosed arteries before and after endolumen enlargement by angioplasty.
TLDR
Normalization of Doppler-derived flow velocity variables with marked reduction of the proximal/distal flow velocity ratios parallelsAngiographic success and may prove useful as an additional end point measurement in interventional cases with questionable angiographic findings. Expand
Coronary flow velocity dynamics in normal and diseased arteries.
TLDR
The coronary vasodilator reserve in proximal and distal arteries--in addition to the proximal to distal velocity ratio--may provide functional and hemodynamic data complementary to coronary angiography in the assessment of coronary artery stenosis. Expand
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TLDR
Whether transesophageal Doppler may detect coronary flow velocity changes in patients undergoing angioplasty for left anterior descending artery stenosis and whether this technique may help to evaluate non-invasively the results of the procedure is tested. Expand
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TLDR
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TLDR
Spectral flow velocity data, using an 0.018-in intracoronary Doppler-tipped angioplasty guidewire, were compared to translesional pressure gradients and angiography during cardiac catheterization to determine the physiologic significance of coronary stenoses. Expand
Distal coronary flow velocity immediately after direct angioplasty for acute myocardial infarction.
TLDR
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TLDR
The Doppler guidewire is available for routine clinical assessment of coronary flow physiology and the exact role for coronary flow velocity assessment following coronary interventions is still unclear. Expand
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TLDR
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