Simultaneous comparison of intracoronary spectral and zero cross flow velocity measurements by doppler angioplasty guidewire and catheter techniques

Ofili, Elizabeth; Karim, M.Asad; Kern, Morton J.; Deligönül, Ubeydullah; Aguirre, Frank V.; Serota, Harvey; Tatineni, Satyanarayana

doi:10.1016/0735-1097(91)91461-m

Cited by 9 publications

(2 citation statements)

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“…Recently, a Doppler-tipped 0.018-or 0.014-in. diameter guidewire, using a 12 or 15 MHz Doppler signal analyzed with fast Fourier transformation of spectral signal, validated the accurate measurement of intravascular blood flow velocity [3]. Because this guidewire is very small and occupied only one-fifth of the cross-sectional area of the conventional Doppler catheter, the alterations of flow velocities and their patterns in both proximal and distal arteries can be accurately measured.…”

Section: Introductionmentioning

confidence: 85%

“…Many investigators have measured coronary flow reserve directly in the coronary artery with this catheter [1,2], but its use is limited to the proximal coronary artery due to the large size of the catheter and relative stiffness. An additional limitation of the Doppler catheter is that velocity signals are processed by zero-crossing analysis, with potential for overestimation of true peak velocities in the presence of turbulent flow or motion artifact [3]. Recent development of an angioplasty guidewire with a Doppler tip permits quantitative measurement of distal coronary flow velocity because of its smaller size (0.018 or 0.014 in.)…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of flow velocity in saphenous vein graft using the Doppler guidewire

Satō¹,

Okamura²,

Kurogane³

et al. 1996

Int J Angiol

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Section: Introductionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Assessment of flow velocity in saphenous vein graft using the Doppler guidewire

Satō¹,

Okamura²,

Kurogane³

et al. 1996

Int J Angiol

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Assessing the Physiologic Significance of Coronary Artery Disease: Role of Doppler Methodology

Schlaifer

Hill

1996

Clinical Cardiology

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Summary:It is important to define both anatomic and functional significance of coronary artery stenoses. Quantitative angiography has decreased the inter-and intraobserver variability in interpreting the coronary angiogram, but it is less clinically applicable in assessing functional significance. The coronary Doppler catheter and guidewire can provide considerable information regarding the functional effects and pathophysiology of coronary stenosis in humans at the time of cardiac catheterization. Clinically, it is a simple and safe technique which makes it feasible in a clinical setting to use it as a tool to assess the physiologic significance of an intermediate stenosis or the functional result of an interventional procedure. Other uses for the intravascular Doppler method, such as the evaluation of cardiac transplant vasculopathy and rejection and evaluation of patients with chest pain syndromes and normal coronary angiograms, are being studied. However, the usefulness of this technique in decision-making has yet to be fully clarified. Future clinical studies should be directed toward comparing this method with noninvasive methods, that is, exercise treadmill test and thallium studies, and attempt to answer questions regarding its prognostic value.

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