It was reported that during a pulmonary vein isolation (pvi) cryoablation procedure, they had successfully ablated three veins.
When they were ablating the last vein (right superior pulmonary vein (rspv)), the physician stopped the ablation due to no effect using a single stop.
After the polarx balloon deflated, they observed a small st segment elevation (2mv).
The elevation lasted for a minute, and during that minute, after about 30 seconds they got error 1 - 00004000-2: console detected blood in catheter.
They immediately pulled out the catheter and found blood inside of the balloon catheter.
The blood also got into the cryo gas cable.
They exchanged the polarx balloon catheter and the cryo gas cable, and tried again.
The exact same problem recurred.
This time, the st segment elevation (2mv) lasted for only 30 seconds.
They then decided to exchange the polarx balloon catheter, the polarsheath, the polarmap mapping catheter and the cryo gas cable.
Afterwards, they were able to ablate the rspv without any further issues and completed the case.
The patient was fine when he left the laboratory, without any further events.
Six hours after the case, the physician reported that the patient experienced a stroke and that he was being medicated.
The patient's status pending.
The products are expected to be returned for analysis.
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