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Percutaneous coronary intervention.Diagnostic imaging with a combination near-infrared spectroscopy (nirs) and intravascular ultrasound (ivus) catheter.A first imaging catheter was used to scan a coronary artery.A 90 degree-size wedge of the transverse ivus image was observed to be missing during the scan.A second catheter was tried and a missing wedge of the transverse ivus image was again observed during the scan.A different brand of ivus imaging catheter was then used to scan the vessel.A dissection of the vessel was observed during scanning and a stent was deployed to treat it.While the nirs-ivus catheter was not deemed to be the direct cause of patient harm, failure of the ivus imaging with the nirs-ivus catheter complicated the procedure and may have contributed to user error.
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