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- W296331548 abstract "The authors sought to determine the ability of quantitative exercise thallium-201 (Tl-201) scintigraphy (ex-T1) to predict early restenosis following angiographically successful percutaneous transluminal coronary angioplasty (PTCA). Ex-Tl was performed 2.6 +- 2.1 weeks (range 0-9) weeks following PTCA in 55 patients; exercise was symptom limited in 54 and heart rate limited in 1. During a mean followup period of 8.5 months (range 3-24), restenosis occurred in 11 patients (20%) and myocardial infarction in 1 (1.7%); restenosis occurred 2.2 +- 1.1 months following the procedure. Of this group, only one patient (1/12; 8%) demonstrated unequivocal redistribution in the scan region of the dilated vessel; other patterns included two patients with delayed washout, three with persistent defects, and six with normal Tl-201 uptake and washout. Eight patients (8/55; 15%) demonstrated redistribution in the scan region of the dilated vessel following PTCA. Of these, five had angiographic evidence of incomplete revascularization with stenosis (greater than or equal to 50%) involving the distal dilated vessel or side branches. The authors conclude that: 1) Normalization of myocardial perfusion as assessed by ex-Tl following PTCA does not preclude early restenosis; and 2) Evidence of residual ischemia by ex-Tl in the scan region of the dilated vesselmore » following PTCA is frequently associated with angiographic evidence of incomplete revascularization.« less" @default.
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- W296331548 date "1985-05-01" @default.
- W296331548 modified "2023-09-23" @default.
- W296331548 title "Value of quantitative exercise thallium-201 scintigraphy for predicting restenosis after successful percutaneous transluminal coronary angioplasty" @default.
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