Treatment of bifurcation coronary lesions may be challenging, and the best technique to be used in these settings remains to be established. While a single stent strategy is simpler and has been often encouraged, a number of studies show that the use of modern stent implantation techniques may bring some advantages in terms of target lesion failure during longer follow-up. Further, single-stent procedures are not possible at all in some settings, for instance when both main and side branch have similar diameters and present both relevant disease, particularly when the angle between the vessels is lower than 70°. Recent randomized data demonstrate the superiority of the technique called double kissing and crush (DK-Crush) over provisional stenting in this setting. The DK-Crush technique is however cumbersome, time-consuming and requires very experienced operators. The investigators therefore plan to undertake a randomized study comparing a novel interventional technique against DK-crush in the setting of true bifurcation lesions (Medina lesions type 1,1,1 or 0,1,1).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
50
revascularization of true coronary bifurcation stenosis in DK crush technique
revascularization of true coronary bifurcation stenosis in Reverse TAP technique
Center of Cardiology, Cardiology I, university hospital Mainz
Mainz, Rhineland-Palatinate, Germany
Stent Expansion in the side branch (defined as the vessel which received the first stent)
Ratio of the minimum stent area of the side branch and the maximum stent area of the side branch
Time frame: through study completion, an average of 2 hours
fluoroscopy time
Time of radiation during intervention
Time frame: through study completion, an average of 2 hours
procedural time
time of procedure ("Skin-to-Skin"-time)
Time frame: through study completion, an average of 2 hours
use of coronary wires
amount of coronary wires used during procedure
Time frame: through study completion, an average of 2 hours
protocol success
the Intervention is performed according to the protocol (including final kissing PTCA)
Time frame: through study completion, an average of 2 hours
Min. lumen Diameter in main branch
Minimum lumen Diameter in the main branch
Time frame: through study completion, an average of 2 hours
Percentage of Stenosis in main branch
Percentage of Stenosis in the main branch
Time frame: through study completion, an average of 2 hours
Min. lumen Diameter in side branch
Minimum lumen Diameter in the side branch
Time frame: through study completion, an average of 2 hours
Percentage of Stenosis in side branch
Percentage of Stenosis in the side branch
Time frame: through study completion, an average of 2 hours
Procedural success
procedural success defined by angiographic success (no residual Stenosis of more than 20% at the end of Radiation) AND no periprocedural complications (including STEMI, new Q-wave myocardial infarction (MI), death, stent thrombosis, by-pass surgery, peri-procedural cardiac biomarker release according to the third universal definition of myocardial infarction) at discharge
Time frame: through study completion, an average of 2 days
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