Interventional therapy of bifurcation lesions: a TIMI flow-guided concept to treat side branches in bifurcation lesions--a prospective randomized clinical study (Thueringer bifurcation study, THUEBIS study as pilot trial).

Background: Treatment of bifurcations is a complex problem. The clinical value of treating side branches is an unsolved problem in the field of interventional cardiology.

Methods And Results: We initiated a prospective randomized controlled trial.