Normalization of coronary flow reserve immediately after stenting but not after PTCA
نویسندگان
چکیده
منابع مشابه
Blockade on Coronary Flow Reserve After Coronary Stenting
Background—Coronary flow reserve (CFR) is not normalized shortly after coronary stenting. We hypothesized that -adrenergic coronary vasoconstriction acts to limit CFR. Methods and Results—We assessed flow velocity by Doppler wires and cross-sectional area by angiography in 46 patients undergoing coronary culprit lesion stenting (81 4% stenosis). Hyperemia was induced by adenosine (24 g IC or 14...
متن کاملAbnormal coronary flow velocity reserve after coronary artery stenting in patients: role of relative coronary reserve to assess potential mechanisms.
BACKGROUND Absolute coronary flow velocity reserve (CVR) after stenting may remain abnormal as a result of several different mechanisms. Relative CVR (rCVR=CVR(target)/CVR(reference)) theoretically normalizes for global microcirculatory disturbances and facilitates interpretation of abnormal CVR. METHODS AND RESULTS To characterize potential mechanisms of poststent physiology, CVR was measure...
متن کاملEffects of selective alpha1- and alpha2-adrenergic blockade on coronary flow reserve after coronary stenting.
BACKGROUND Coronary flow reserve (CFR) is not normalized shortly after coronary stenting. We hypothesized that alpha-adrenergic coronary vasoconstriction acts to limit CFR. METHODS AND RESULTS We assessed flow velocity by Doppler wires and cross-sectional area by angiography in 46 patients undergoing coronary culprit lesion stenting (81+/-4% stenosis). Hyperemia was induced by adenosine (24 m...
متن کاملCoronary flow velocity immediately after primary coronary stenting as a predictor of ventricular wall motion recovery in acute myocardial infarction.
OBJECTIVES The purpose of this study was to examine the relationship between the pattern of coronary blood flow velocity immediately after successful primary stenting and the recovery of left ventricular (LV) wall motion in patients with acute myocardial infarction (AMI). BACKGROUND It is difficult to predict the recovery of LV wall motion immediately after direct angioplasty in AMI. Recent r...
متن کاملNormalization of coronary flow reserve by percutaneous transluminal coronary angioplasty.
Fifteen patients undergoing routine follow-up angiography 5 months after successful percutaneous transluminal coronary angioplasty (PTCA) without angina and with normal exercise thallium scintigraphy were selected for analysis. The coronary flow reserves of these patients were compared with those of 24 patients with angiographically normal coronary arteries to establish whether PTCA can restore...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1996
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(96)80261-0