Abstract:Poststenotic intracoronary flow velocity measurements both prior to and following percutaneous transluminal coronary angioplasty (PTCA) by use of a Doppler-tipped guidewire allow estimation of haemodynamic improvement due to interventional procedures. Since poststenotic coronary artery vasoconstriction routinely occurs after PTCA, haemodynamic improvement may be overestimated when measured by flow velocity alone. In 38 patients scheduled for elective PTCA in single vessel disease (left anterior descending = 19… Show more
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