Extracorporeal membrane oxygenation (ECMO) has always been a therapy defined by its ability to buy time; time for a heart to recover, for lungs to heal, or for a transplant to become possible. But a recently published case report from Northwestern Medicine introduces a new way of buying time — one that has only been attempted a handful of times in any form, and never quite like this. The case challenges not just what ECMO can support, but what is even survivable with the right circuit design behind it.