Getting into the weeds a bit.
The IABP (Intra Aortic Balloon Pump) is a notoriously tricky device to operate. The timing of inflation and deflation have to be adjusted very, VERY, precisely. If you fuck it up, someone's heart attack might very well get bigger, and that would be the best outcome.
Mrs. George, in another life, taught some courses on how to manage the IABP in the ICU.
If we had trouble weaning an open heart patient from the pump, the surgeon would insert an IABP to "unload" the heart and hopefully get the patient to the ICU.
In the "bad old days" inserting an IABP was a big deal. Surgeon would make an incision in the groin and find the femoral artery. He would then take a piece of dacron tubing, about ¾" in diameter and sew its end to an incision in the femoral artery. Then, the IABP would be inserted through the Dacron. Taking the IABP out was another trip to the OR - had to remove the graft on the femoral artery and then close the artery.
Eventually, the tech matured so that the IABP could be inserted percutaneously. Made a huge difference.
https://en.wikipedia.org/wiki/Intra-aortic_balloon_pump
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Link to video