During a procedure, an attempt was made to use a 2.25mm resolute onyx rx coronary drug eluting stent to treat a lesion.The stent failed to cross the lesion.An attempt was then made to use a 2.00x12mm resolute onyx stent to treat a severely tortuous, mildly calcified lesion exhibiting 95% stenosis in the ostium in the left anterior descending (lad) artery.The device was inspected with no issues.Negative prep was performed without issue.The lesion was pre-dilated.The device did not pass through a previously deployed stent.Resistance was encountered when advancing the device.It was reported that stent dislodgement occurred during removal following a failed delivery.The stent had to be deployed proximal to the target location.The stent was not deployed using the stent delivery system.The stent was re-crossed by other smaller balloons and gradually getting bigger ending with a 3.0 balloon.The lad was the intended lesion.Patient is alive but remains in hospital.The patient is alive and is awaiting bypass surgery because of the failure to fix the lad.
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