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It was reported the cannula and guidewire were difficult to remove.A flexima drainage catheter system and amplatz-pi guidewire were selected for use.During an antegrade ureteric stent stenting, the drainage catheter cannula would not detach and was lodged in the drainage catheter stent.The amplatz-pi guidewire could not be removed easily, and required excessive force to remove it.As a result, the amplatz-pi guidewire frayed and fractured when retracted.The patient was returned to the ward with the stent in place with the cannula attached acting like the drain.
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