During the procedure, a dissection of the ostial circumflex artery occurred.The catheter was introduced into the distal circumflex artery lesion while another guidewire was in the left anterior descending artery.The first marker of the catheter passed the ostium of the circumflex artery, but the second marker went into the left anterior descending artery and the catheter became kinked.It was not possible to introduce the catheter at the desired location in the circumflex artery so the catheter was retrieved and reintroduced.When contrast was flushed, it was noticed that the ostial circumflex artery had been dissected by the catheter.It was not possible to advance the catheter and so no further imaging was performed.Fluoroscopy was used to diagnose the dissection and a drug-eluting stent was placed.The patient was stable.
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