1. Optical Coherence Tomography—Guided Left Main Stem Stenting

    Optical Coherence Tomography—Guided Left Main Stem Stenting

    An 83-year-old man was referred for left main coronary artery (LMCA) stenting (Fig. 1A). After predilation, a 3.5 × 16-mm Promus™ drug-eluting stent (Boston Scientific Corporation; Natick, Mass) was deployed across the distal LMCA at a pressure of 16 atm (estimated diameter, 3.8 mm) (Fig. 1B). Optical coherence tomography (OCT) was performed after stent deployment (Fig. 1C). This measured the mean vessel diameter at 3.8 mm (area, 11.8 mm2) but, importantly, showed clear proximal malapposition of stent struts in the distal LMCA of up to 290 pm (Fig. 1C). Further balloon inflation of a 4 × 9-mm NC ...

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