Retrograde balloon hemostasis.

Despite improvements in current devices and techniques for complex chronic total occlusion (CTO) percutaneous coronary intervention (PCI), procedural complications, including coronary perforation, still occur and could be life-threatening. A patient with a history of multivessel coronary artery disease and a CTO of the right coronary artery (RCA) underwent successful retrograde crossing of an RCA CTO. After wiring the CTO body and lesion dilatation, a drug-eluting stent was implanted in the distal RCA toward the posterior descending artery. A large Ellis type III perforation occurred at the distal edge of the stent. Septal crossing with a balloon and tamponade of the perforation site through the retrograde collaterals followed, as the RCA was not suitable to accommodate easily both the covered stent and the balloon simultaneously. This case report presents a novel approach the "septal retrograde ping-pong" technique, which demonstrates successful treatment of coronary perforations by utilizing a retrograde approach through a septal collateral. This technique proves to be effective in situations where the conventional antegrade balloon or covered stent delivery methods are not feasible or unsuccessful. This innovative approach offers a promising alternative for managing challenging cases of coronary perforations, providing new insights and potential solutions for interventional cardiologists.