Proximal optimisation technique (POT) in bifurcation angioplasty
Proximal optimisation technique (POT) is post dilatation of the proximal portion of the stent in the main vessel, done after kissing balloon dilatation in bifurcation lesions. The post dilatation is done with a balloon diameter 0.5 mm more than that of the stent. This makes the proximal portion of the stent more apposed to the proximal vessel which is having a larger diameter than the distal vessel. The balloon for proximal optimisation is kept in such a way that the distal marker is at the level of the bifurcation.