Cor Vasa 2002, 43(2):56-60
The value of pressure gradient measurement in iliac artery angioplasty
- Základna radiodiagnostiky a intervenční radiologie, Institut klinické a experimentální medicíny, Praha, Česká republika
Purpose:
To identify the role of transstenotic pressure gradients in evaluating the outcome of percutaneous transluminal angioplasty (PTA) of iliac arteries. To determine the influence of pharmacological peripheral vasodilatation on the pressure gradient. To compare pressure gradients with angiographic stenosis evaluation.
Material and methods:
A total of 64 systolic transstenotic pressure gradients were evaluated in 37 patients (37 during angiographic examinations, 10 after PTA, and 20 after stent implantation). In 30 angiographic examinations, the gradient was measured at rest and after tolazoline-induced peripheral vasodilatation.
Results:
In 28 out of 30 measurements, transstenotic gradient increased after vasodilatation; in five cases, the gradient became hemodynamically significant (ł 15 mm Hg). While, in diagnostic angiography, pressure gradients correlated well with angiography, a significant pressure gradient was found although angiography detected only insignificant residual stenosis in 5 out of 10 post-PTCA patients.
Conclusion:
Transstenotic pressure gradient measurement can be a valuable adjunct to iliac artery stenosis evaluation, especially so when the angiographic result is considered unclear or of borderline significance. Pressure gradients may play an important role in evaluating post-PTA results and may significantly contribute to the indication of stent implantation.
Keywords: PTA; Pressure gradients; Iliac artery; Stents
Published: February 1, 2002 Show citation