An event of entrapment of the device was reported.The results of the investigation are inconclusive since the device was not returned for analysis.Additionally, no lot number was provided so a review of the device history record (dhr) was not possible.Based on the information received, the cause of the reported incident could not be conclusively determined.
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The following was published in elsevier inc., titled, "entrapment of a steerable diagnostic electrophysiologic catheter in the thebesian valve during radiofrequency catheter ablation for atrial fibrillation" by euijae lee, et al.: ".To place the duodecapolar catheter on the lower ra and cs, we advanced the catheter into the mid-ra.The shaft of the catheter was bent and rotated counterclockwise.The tip of the catheter was directed to the ostium of the cs several times, but unexpected resistance was encountered during catheter manipulation.Further clockwise rotation attempts and forceful retraction failed to release the catheter.Intracardiac echocardiography (ice) revealed that the tip of the catheter touched interatrial septum without chiari network or tricuspid valve damage.We pulled the entrapped catheter with counterforce using a combination of a decapolar catheter and long sheath, but the catheter was not released.Finally, we cut the handle of the catheter, and the sl1 sheath was introduced over the catheter.We tried to detach the duodecapolar catheter into the sl1 sheath, but this maneuver also failed.We finally decided to perform open heart surgery to remove the catheter and a cox maze operation concomitantly." ".After catheter removal, the cox maze iii procedure using cryoablation was performed without complications.The patient recovered with no postoperative complications and was discharged.".
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