When Do You Decide to Stop a Difficult Filter Retrieval?

I thought I'd wrap up by covering a few questions that came up on Twitter. There were several from Sabine Don, one of which asked, when do you decide to stop a difficult filter retrieval and how much is it okay to leave behind if anything? "As far as I don't, I wouldn't love leaving anything behind if I thought it was intravascular," Dr. Cush says. 'You've got to be with these things for a long time before you can take them out'