Outcome of Coronary High Angulated Bifurcation Lesions Treated With Kissing Ballooning or Sequential Ballooning Techniques

Completed

Brief Summary: Coronary artery bifurcation lesions prone to occur with the worsening of atherosclerosis. Their structural properties make angioplasty technique to increase the difficulty of implementation, but also increased the risks of the in-stent thrombosis and restenosis. Standard treatment of coronary bifurcation lesions remains controversial manner, especially when the side branch (SB) was large combined with high angulated bifurcation lesions. Complex procedures and certain types of lesions are associated with poor prognosis. There is no standard treatment for such lesions even with the development of drug-eluting stents solve partial problems. The investigators reviewed patients who received coronary intervention between 2009-2012 years and met the inclusion criteria, and then analyzed the prognostic relevance of these cases the use of different treatment modalities.

We introduced a retrospective analysis for high angulated bifurcation lesions treated with either DES or BMS.

Primary endpoint: cardiovascular mortality, TLR, MACE. secondary endpoint: procedure time, fluoroscopy time, procedure success, angiographic success.

Recruitment & Eligibility

Inclusion Criteria

Angulated bifurcation:MV(main branch) and SB(side branch) angle>70 degree. MV diameter≥2.5mm and eligible for stenting. lesion stenotic severity>70% by QCA(Quantitative coronary analysis). 1 stent strategy. SYNTAX>22 Procedure success. de novo lesion

Exclusion Criteria

Bifurcation lesions intervention without side br. ballooning after stents deployment or procedure incomplete. Left main coronary artery bifurcational lesions. Elective,provisional or bail-out stenting for side br.

Primary Outcome Measures

Name	Time	Method
Percentage of Participants With Major Adverse Cardiac Events(MACE)	periprocedure up to 12 months	Percentage of Participants with major adverse cardiac events(MACE) was defined as rates of target lesion revascularization (TLR) and restenosis during first post-treatment year, and rates of acute, subacute, and late in-stent thrombosis, periprocedure MI(myocardial infarction).
Percentage of Participants With Cardiovascular Mortality(%)	periprocedure up to 12 months	Percentage of Participants with cardiovascular mortality was defined as death related to cardiovascular causes within 2 years.

Secondary Outcome Measures

Name	Time	Method
Percentage of Participants With Angiographic Success(%)	periprocedure up to 12 months.	Percentage of Participants with angiographic success was defined as residual stenosis\<50% under fluoroscopy at the end of procedure.
Fluoroscopy Time(Minutes) of Each Participants	periprocedure up to 12 months.	as medical chart record.
Percentage of Participants With Target Vessel Revascularization Rate	periprocedure up to 12 months.	Percentage of Participants with target vessel revascularization rate, both arms
Procedure Time(Minutes) of Each Participants	periprocedure up to 12 months.	as medical chart record.