Main Coronary Artery Bifurcation Lesions Research Articles

Effectiveness of using dual stent to intervene true left main coronary artery bifurcation lesions

Abstract: Lesions at the bifurcation of the left main coronary artery are dangerous lesions that account for approximately 4–8% of CAD (coronary artery disease) cases. In Vietnam, dual stent percutaneous coronary intervention has been used to treat true left main stem coronary artery bifurcation lesions, but there is no study that summarizes the recent results and evaluates them after a follow-up period. Consequently, we conducted this study.
 Research objectives: Effectiveness of using dual stent to intervene true left main coronary artery bifurcation lesions.[1]
 Objects and research methods: Crossectional study, review of all patients who received LMCA bifurcation lesions interventional stenting with dual stent at Hanoi Heart Hospital from 1/2018 to 6/2020.
 Research results: The rate of major cardiovascular events was determined as follow: 1 patient died during hospital stay; 18% of patients had at least one major cardiovascular event during the 12-month follow-up period; 3 patients had cerebrovascular accidents, which accounted for 6%; 3 patients had acute myocardial infarction, which accounted for 6%; and 2 patients had acute myocardial infarction, which accounted for 6%. Two patients require revascularization, representing 4% of the total population.

Single-stent strategy for left coronary artery bifurcation lesions in patients with chronic ischemic heart disease: protocol of a randomized trial

Aim. This study aims to compare the intraoperative, immediate postoperative and long-term postoperative results of stenting followed by final kissing balloon angioplasty (FKB) and without FKB for left coronary artery (LCA) bifurcation lesions in patients with chronic ischemic heart disease.Material and methods. We plan to perform an open-label, prospective, randomized, single-center, cohort trial that will include 40 patients with left main coronary artery bifurcation lesion, who will undergo stenting procedure followed by FKB or without FKB, using the second-generation drug-eluting stents. Randomization into two groups will be done after performing coronary angiography, confirming the inclusion criteria and the absence of non-inclusion criteria and signing a written consent in 2 copies. Group 1 — stenting followed by FKB. Group 2 — stenting without FKB. The total follow-up period is 24 weeks. It is planned to contact by phone on 30th and 180th day (±7 days) of postoperative period to obtain the information about patient condition, general survival rate, the events of combined controlled points and drug therapy. During 2d phone contact, on 180th day (±7 days), a patient will be invited to undergo multispiral computed tomography of the coronary arteries.The primary combined end-point: cardiac death, nonfatal myocardial infarction, acute cerebrovascular accident and the repeat target vessel revascularization. The secondary combined end-point: thrombosis and stent restenosis.Conclusion. Our study will optimize the approach to the choice of stenting strategy (with or without FRB) for left main coronary artery bifurcation lesions in patients with chronic ischemic heart disease.

Provisional Vs Dual Stenting of Left Main Coronary Artery Bifurcation Lesions

Background: The primary LMCA stenting methods used nowadays consist of single stent (provisional), and two stent (T and protrusion, and double kissing crush {DK crush}, culotte, or classic crush). The optimal technique for bifurcation lesion treatment for the patients present with distal ULMCA disease is still unclear and not much is known about the best course of action and the clinical outcomes following various PCI techniques for ULMCA bifurcations in Pakistan. Objective: To investigate the midterm (3-year) outcomes related to the provisional stenting compared to two-stenting technique for the bifurcations of ULMCA undergoing the percutaneous coronary intervention. Methodology: A single-center retrospective, non-randomized cohort study was conducted during the period from March 2021 to August 2022 including all the consecutive LM bifurcation lesions. The patients attending Punjab Institute of Cardiology, Lahore were divided into two groups, depending upon the treatment received. One group underwent PCI with provisional stenting technique while the other underwent 2-stent PCI. The groups were compared for procedural success and 3-year clinical outcomes. Data was analyzed using SPSS. Results: The success rate of left main bifurcation angiography was comparable between both the techniques (2-stent 93.6 % vs. Provisional 92.1 %, P = 0.62). MACE rates were comparable between groups at 1, 2, and 3 years (PS 3.0 % vs. Dual stent 2.4 %, p = 0.75 at 1-year, PS 4.8 % vs. Dual stent 8 %, p = 0.26 at 2-years, and PS 10.2 % vs. Dual stent 12 % at 3-years, p = 0.62). Conclusion: Two stenting strategy was linked to same rates of MACEs at the 3-year duration in comparison to the single stenting technique (PS 10.2 % vs. 2-Stent 12 %, p=0.62) and both the dual and single provisional stent techniques have comparable angiographic success rate for LM bifurcation lesions.

Left Main Coronary Artery Bifurcation Lesions: Two Stents vs One Stent Strategy-Comparison of Major Adverse Cardiac Events (MACE) at 2 years

Objective: To evaluate the long-term clinical results for a one-stent (1S) strategy compared to a two-stent (2S) strategy in distal unprotected left main coronary artery (ULMCA) bifurcation disease.
 Study Design: Comparative Cross-sectional study.
 Place and Duration of Study: Armed Forces Institute of Cardiology, Rawalpindi Pakistan, from Jan 2019 to Apr 2020.
 Methodology: 1-S approach was defined as stenting of the main vessel only and 2-S approach as stenting side branch and main vessel. Individual undergoing LMCA intervention were included via consecutive sampling in the study. Stent Crossover approach was used in 1-S technique; whereas, DK crush, culotte, and T-stenting approaches were employed in individuals who were treated with a 2-S approach. A composite of major adverse cardiovascular event (MACE) i.e., myocardial infarction, stroke or death and target lesion revascularization (TLR) were considered as primary end-point.
 Results: A sum of 110 individuals were inducted, 74 of them had stenting of left main bifurcation using a 1-S approach; and 36 patients underwent a 2-S PCI. Average age of the patients included in the study was 63.9±10.8 years. In 1 stent subset, the success rate of procedure was 99% whereas 100% success rate was seen in 2-S group. During the 2-year duration of follow up,frequency of MACE in single stent subset was (5.4%) whereas it was (13.8%, p=0.253) in the 2-S subset.
 Conclusion: When compared to 2-S approach of distal left main stenting, a 1-S strategy appears to demonstrate optimal clinical results and 2-year survival free of MACE. Choosing appropriate interventional strategy has proven prognostically significant; so, it demands mindful approach selection.

Provisional Versus Dual Stenting of Left Main Coronary Artery Bifurcation Lesions (from a Comprehensive Meta-Analysis)

The optimal technique for bifurcation of left main coronary artery (LMCA) stenting has been a subject of controversy since the inception of drug-eluting stents. We searched PubMed, Clinical Trials Registry, and the Cochrane Central Register of Controlled Trials from January 2002 through October 2021. A total of 13 studies comparing the use of provisional versus dual stenting in patients with LMCA bifurcation lesions were included. Any major adverse cardiac event (MACE) was considered the primary composite end point. The secondary end points included individual components of MACE, including death, myocardial infarction, and target lesion revascularization. The treatment effect was defined as the log odds ratio (OR) of provisional over dual stenting for cumulative event rate at 3 years. In 12 studies with 8,377 patients included for MACE, the use of a provisional-stenting strategy was associated with a significant reduction of 3-year MACE (OR 0.64, 95% confidence interval [CI] 0.46 to 0.88) compared with a dual-stenting strategy, primarily driven by target lesion revascularization (OR 0.51, 95% CI 0.36 to 0.73). No significant difference was found regarding death (OR 0.88; 95% CI 0.65 to 1.21) or myocardial infarction (OR 0.97, 95% Cl 0.61 to 1.54). In conclusion, our meta-analysis suggests that provisional stenting should be the preferred technique over dual stenting when treating LMCA bifurcation lesions with drug-eluting stents. Further randomized controlled studies compounded with intracoronary imaging comparing the 2 strategies are warranted.

A Review of Double Kissing Crush Stenting in Coronary Bifurcation Lesions

Double kissing (DK) crush stenting for coronary bifurcation lesions has gain popularity worldwide because of its superior randomized studies data and excellent clinical outcomes. This review evaluates all DK crush clinical trials and studies. It also reveals the contemporary technique steps by steps as well as the trouble shooting with illustrated clinical scenarios. Among all the available evidence, the DK crush technique is superior when compared to the provisional stenting technique for complex bifurcation lesion. DK crush stenting provides the best evidence-based approach to complex bifurcation lesions especially the left main coronary artery bifurcation lesions. Future direction of how to make this DK crush technique better is also proposed.

Safety Assessment of Microcatheter-Protected Rotational Atherectomy with the Double Guiding Catheter Technique for Severely Calcified Left Main Bifurcation.

Background Rotational atherectomy (RA) is a tool for calcium modification, but there is a risk of losing the side branch in left main coronary artery (LM) bifurcation lesions, resulting in disastrous consequences. Microcatheter-protected RA with the double guiding catheter (GC) technique for severely calcified LM bifurcations has been described previously, but its safety warrants further investigation. Methods Various sizes of coronary calcification vascular simulators were utilized to model calcified LM bifurcation lesions for RA in in vitro. The damage to the side branch protective microcatheters and guidewires was accessed after microcatheter-protected RA with the double GC technique. In clinical practice, microcatheter-protected RA with the double GC technique was carried out in two patients. Results In vitro, none of the protective microcatheters or guidewires were completely fractured, although the majority of them were damaged to varying degrees. In clinical practice, we successfully carried out two cases of percutaneous coronary intervention for severely calcified LM bifurcation with microcatheter-protected RA using the double GC technique. Conclusion RA of severely calcified LM bifurcation lesions may be successfully performed using microcatheter-protected RA with the double GC technique, potentially reducing the risk of side branch occlusion. Since majority of protective microcatheters or guidewires were damaged, there was still some risk, and it is recommended to use this technique only in highly selected patient population of severely calcified true (Medina 1, 1, 1) LM bifurcations.

The Drug Coated Balloon-Only Strategy for Treatment of de Novo Left Main Coronary Artery Bifurcation Lesion: Stentless Strategy.

The study aimed to evaluate the efficacy and safety of drug coated balloon-only strategy (DCB-only) in the treatment of de novo left main coronary artery (LM) bifurcation lesions. 85 patients were enrolled in this study and classified them into two groups: DCB-only group (n = 36) and DES group (n = 49). The MLD of target vessels was measured before and immediately after percutaneous coronary intervention (PCI) and late luminal loss (LLL) were also calculated. And the occurrence of major adverse cardiovascular events (MACE) was also evaluated. Compared with that before PCI, the MLD of target lesions significantly increased immediately after PCI (P < .05) and no MACE was recorded during the perioperative period both in two groups. The MLD at follow-up was significantly higher than that before both DCB and DES treatment. Compared with the DES group, the MLD of the DCB group was smaller than immediately after PCI in the LM and LAD (P < .05). The LLL of LAD in DCB group was smaller than that in DES group (P < .05). There was no significant difference in the incidence of luminal restenosis at the target lesion between the two groups, and no significant difference in the incidence of MACE (P > .05). The use of DCB-only to treat de novo LM bifurcation lesions is effective and relatively safe, which provides new ideas for the treatment of LM coronary artery bifurcation lesions in the future.

A Case Summary of the Application of a Drug-Eluting Stent Combined with a Drug-Coated Balloon in Left Main Coronary Artery Disease

Objective: To evaluate the clinical efficacy of a drug-eluting stent (DES) combined with a drug-coated balloon (DCB) in the treatment of left main coronary artery bifurcation lesions. Methods: A retrospective analysis was conducted on the clinical data of eight patients with left main coronary artery bifurcation lesions treated with a DES combined with a DCB who were admitted to our hospital from July 2016 to July 2017. These eight patients all underwent DES treatment for their left main coronary artery and left anterior descending coronary artery lesions, and DCB treatment at the ostium of the left circumflex artery; six of the patients underwent surgical procedures under the guidance of intravascular ultrasonography. Immediate postoperative angiography was used to evaluate the patency of the diseased vessels, and the restenosis rate at the 6-month follow-up after the operation and the incidence of serious clinical events within 6 months were assessed as well. Results: The use of a DES combined with a DCB in the treatment of left main coronary artery bifurcation lesions had a low restenosis rate (left main coronary artery (8.4 ± 5.3)%, left anterior descending coronary artery (18.2 ± 5.0)%, left circumflex artery (30.5 ± 16.5)%). No serious clinical events occurred in any patients. Conclusion: A DES combined with a DCB is a safe and effective interventional treatment for left main artery coronary bifurcation lesions.

Drug-eluting balloon catheters in the treatment of left main coronary artery bifurcation lesions

<h3></h3> В статье представлен обзор современных исследований по применению баллонных катетеров с лекарственным покрытием при чрескожных коронарных вмешательствах. Имеются многочисленные данные, подтверждающие эффективность и безопасность их использования у пациентов с рестенозами стентов, а также при поражениях артерий малого диаметра. Доказательная база их применения у пациентов с бифуркационными стенозами коронарных артерий остается ограниченной. Тем не менее, существующие исследования демонстрируют отсутствие преимуществ двухстентовых методик бифуркационного стентирования перед одностентовыми с применением баллонных катетеров с лекарственным покрытием. Однако остаются нерешенными вопросы отбора пациентов для подобных вмешательств при бифуркационных стенозах ствола левой коронарной артерии, технические аспекты процедуры стентирования, целесообразность применения внутрисосудистых методов исследования для оптимизации результатов лечения, недостаточно сведений об отдаленных результатах лечения таких пациентов.

TCT-398 Drug-Eluting Balloon Catheters in the Treatment of Left Main Coronary Artery Bifurcation Lesions: 4-Year Follow-Up

TCT-398 Drug-Eluting Balloon Catheters in the Treatment of Left Main Coronary Artery Bifurcation Lesions: 4-Year Follow-Up

Drug-eluting balloon catheters in the treatment of left main coronary artery bifurcation lesions: 4-years follow-up

Abstract Aim To evaluate the long-term results of the use of drug-eluting balloon catheters in patients with Left Main (LM) bifurcation stenosis. Methods The analysis involved 142 patients with true bifurcations of the Left Main. Randomization in 2 main groups: Group I (n=52) included patients, who received kissing- dilatation with traditional NC balloon catheters and Group II (n=52), who had a kissing-dilatation of the main bifurcation artery with a traditional NC balloon catheters, and a side branch - with drug-eluting balloon catheters. In retrospectively, the third (III) control group (n=38) was formed, where the two-stent technique was performed. All patients from main groups had previously performed “Provisional T” stenting and final “kissing balloons” dilation technique. Coronary angiography and OCT were performed to evaluate the results of all patients. Inclusion criteria: true LM bifurcation stenoses according to QCA and OCT; SYNTAX score &amp;lt;32. Primary endpoints: incidence of MACE - death, MI, re-interventions. Secondary endpoints: the incidence of restenosis and late stent thrombosis. Results The long-term results after 4-years were observe in 46 patients from Group I and 48 patients from Group II. Restenosis of the side branch of more than 50% according to QCA was detected in 12 patients (26.0%) from Group I and in 5 patients (10.4%) from Group II (p&amp;lt;0.05). In-stent restenosis of the main vessel of more than 50% according to QCA was detected in 4 patients (8.6%) from Group I and in 1 patients (2.1%) from Group II (p&amp;lt;0.05). In patients from group I, the average MLA in the side branch after 4-years compared with data after PCI was 5.58±1.34 and 4.12±1.21 mm2, respectively (p&amp;lt;0.05), in the main branch – 6.34±1.56 and 5.88±1.14 mm2, respectively (p&amp;gt;0.05). In patients from Group II, the average MLA were, respectively, 5.38±1.24 and 5.01±1.14 mm2 in side branch (p&amp;gt;0.05) and 6.68±1.75 and 6.36±1.22 mm2 in main branch (p&amp;gt;0.05). When comparing the data of MLA in the side branch in groups I and II, there was a significant difference (4.12±1.21 vs. 5.01±1.14 mm2; p&amp;lt;0.05).The repeat revascularization, in connection with the detected ischemia was performed in 7 patients (15.2%) from Group I and in 1 patients (2.1%) from Group II (p&amp;lt;0.05). In the Group I was observed non-fatal myocardial infarction in 2 patients (4.3%). The total incidence of MACE were 19.5 vs. 2.1% in groups I and II respectively (χ2=7.321; p&amp;lt;0.001). The survival without MACE was 97.9 and 80.5%, respectively (p=0.0219). Conclusions The use of dug-eluting balloon catheters for the “Provisional T” stenting in patients with true LM bifurcation stenosis, associated with good prognosis and demonstrated significantly lower frequency of MACE and side branch restenosis, according to OCT data, compared with patients who used traditional NC balloon catheters for “kissing-dilatation” and two-stent technique strategy. Funding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Russian academic excellence project 5-100

Percutaneous Coronary Intervention for Left Main Coronary Artery Bifurcation Lesions: Two-stent versus one-stent Strategy for Comparison of 6-month MACE.

To assess the short term clinical outcomes for a single-stent (SS) strategy versus a double-stent (DS) strategy in percutaneous coronary intervention (PCI) of distal unprotected left main coronary artery (ULMCA) lesions. Descriptive comparative study. Armed Forces Institute of Cardiology, Rawalpindi, Pakistan from January 2017 to April 2018. SS treatment was defined as stenting of the main branch alone and DS treatment as stenting of both the main and side branches. Patients who underwent LMCA PCI were recruited in the study using consecutive sampling. Crossover technique, with or without kissing balloon (KB) dilatation, was employed in those getting PCI with a SS strategy; whereas, DK crush, mini-crush , culotte and T-stenting techniques were used in patients undergoing PCI with a DS strategy. The primary endpoints were a composite of major adverse cardiovascular event (MACE) i.e. myocardial infarction, stroke or death and target lesion revascularisation (TLR). A total of 103 patients were recruited in the study; out of which, 73 underwent LMCA PCI employing a SS technique; whereas, 30 of them were treated with a DS strategy. Mean age of the study participants was 63.2 ±10.6 years. The procedural success rate was 100% in both groups. There was a lower frequency of MACE with single-stent strategy (4.1%) versus the double-stent strategy (16.7%, p=0.031) during the 6-month follow-up period. In comparison to the two-stent strategy of ULMCA bifurcation intervention, a single-stent approach seems to show favourable clinical outcomes and 6-month MACE-free survival. The choice of optimal revascularisation technique proves to be important for the prognosis; therefore, it requires pragmatic decision-making. Key Words: PCI (percutaneous coronary intervention), ULMCA (unprotected left main coronary artery), SS (single-stent), DS (double-stent), MACE (major adverse cardiovascular events), CABG (cardiopulmonary bypass grafting), TLR (target lesion revascularisation).

Crush is superior to Culotte in two-stent strategy for treatment of left main coronary artery bifurcations: A systematic review and meta-analysis.

Crush and Culotte techniques have been used increasingly to treat patients with complex unprotected left main coronary artery bifurcation lesions. This article compares published data on these two techniques. Databases, including PubMed, Embase, Cochrane Library, Wanfang Data and China National Knowledge Infrastructure, were searched for articles published before Aug 21, 2019 to identify all relevant studies on left main coronary artery bifurcation lesions treated by Crush versus Culotte techniques. The pooled data were analyzed using either fixed- or random-effects model depending on heterogeneity (assessed via the I2 index). The endpoints were major adverse cardiac events, target lesion revascularization, cardiac death, stent thrombosis, myocardial infarction and target vessel revascularization. Eight articles with a total of 1,283 patients were included, and 710 patients were treated with Crush, and 573 ones with Culotte. Crush group was trend to decreased major adverse cardiac event compared with Culotte group [Relative ratio (RR) 0.63,95% confidence interval(CI) 0.39-1.04, I2 =72.7%], mainly driven by decreased cardiac death [RR 0.49, 95% CI(0.25-0.99), I2 =0%], decreased myocardial infarction [RR 0.40, 95% CI(0.21-0.76), I2 =21.6%],and lower stent thrombosis [RR 0.39, 95% CI(0.16-0.98), I2 =39.4%]. There was no significant difference in target lesion revascularization and target vessel revascularization between Crush and Culotte [RR 0.77, 95% CI 0.46-1.28, I2=61.1%; RR 0.78, 95% CI (0.30-2.02), I2 =73.1%, respectively]. Crush was superior to Culotte for treatment of left main coronary artery bifurcation lesions with a trend of lower incidence of long-term major adverse cardiac events, mainly derived from decreased myocardial infarction, stent thrombosis and cardiac death.

A drug-eluting Balloon for the trEatment of coronarY bifurcatiON lesions in the side branch: a prospective multicenter ranDomized (BEYOND) clinical trial in China.

Treatment of coronary bifurcation lesions remains challenging; a simple strategy has been preferred as of late, but the disadvantage is ostium stenosis or even occlusion of the side branch (SB). Only a few single-center studies investigating the combination of a drug-eluting stent in the main branch followed by a drug-eluting balloon in the SB have been reported. This prospective, multicenter, randomized study aimed to investigate the safety and efficacy of a paclitaxel-eluting balloon (PEB) compared with regular balloon angioplasty (BA) in the treatment of non-left main coronary artery bifurcation lesions. Between December 2014 and November 2015, a total of 222 consecutive patients with bifurcation lesions were enrolled in this study at ten Chinese centers. Patients were randomly allocated at a 1:1 ratio to a PEB group (n = 113) and a BA group (n = 109). The primary efficacy endpoint was angiographic target lesion stenosis at 9 months. Secondary efficacy and safety endpoints included target lesion revascularization, target vessel revascularization, target lesion failure, major adverse cardiac and cerebral events (MACCEs), all-cause death, cardiac death, non-fatal myocardial infarction, and thrombosis in target lesions. The main analyses performed in this clinical trial included case shedding analysis, base-value equilibrium analysis, effectiveness analysis, and safety analysis. SAS version 9.4 was used for the statistical analyses. At the 9-month angiographic follow-up, the difference in the primary efficacy endpoint of target lesion stenosis between the PEB (28.7% ± 18.7%) and BA groups (40.0% ± 19.0%) was -11.3% (95% confidence interval: -16.3% to -6.3%, Psuperiority <0.0001) in the intention-to-treat analysis, and similar results were recorded in the per-protocol analysis, demonstrating the superiority of PEB to BA. Late lumen loss was significantly lower in the PEB group than in the BA group (-0.06 ± 0.32 vs. 0.18 ± 0.34 mm, P < 0.0001). For intention-to-treat, there were no significant differences between PEB and BA in the 9-month percentages of MACCEs (0.9% vs. 3.7%, P = 0.16) or non-fatal myocardial infarctions (0 vs. 0.9%, P = 0.49). There were no clinical events of target lesion revascularization, target vessel revascularization, target lesion failure, all-cause death, cardiac death or target lesion thrombosis in either group. In de novo non-left main coronary artery bifurcations treated with provisional T stenting, SB dilation with the PEB group demonstrated better angiographic results than treatment with regular BA at the 9-month follow-up in terms of reduced target lesion stenosis. ClinicalTrials.gov, NCT02325817; https://clinicaltrials.gov.

Long-Term Outcomes of Drug-Eluting Stent Implantation After Rotational Atherectomy for Left Main Coronary Artery Bifurcation Lesions

The clinical outcomes of drug-eluting stent (DES) implantation after rotational atherectomy (RA) for complex left main coronary artery (LMCA) bifurcation lesions remain unclear. Among 1,809 patients retrospectively enrolled in the Assessing Optimal percutaneous coronary Intervention for LMCA Registry, we identified 1,199 patients with LMCA bifurcation lesions treated by crossover stenting with DES for the main vessel. The study population was divided according to the use of RA. The patients in the RA group were further subdivided into the 2 subgroups on the basis of the stenting approach. The rates of periprocedural myocardial infarction and in-hospital death in the RA group were comparable to those in the non-RA group. The cumulative 5-year incidences of all-cause death and target lesion revascularization (TLR) were significantly higher in the RA group than those in the non-RA group. However, after adjusting confounders, the excess risks of the RA group relative to the non-RA group for all-cause death and TLR were no longer significant (hazard ratio 0.95, 95% confidence intervals 0.59 to 1.52, p = 0.83, and hazard ratio 1.46, 95% confidence intervals 0.82 to 2.60, p = 0.20, respectively). In the RA group, the cumulative 5-year incidences of all-cause death and TLR were markedly higher in the 2-stent subgroup than in the 1-stent subgroup (58.1% vs 26.0%, p = 0.001, and 43.0% vs 16.3%, p = 0.001, respectively). In conclusion, DES implantation after RA was a safe and feasible strategy in treating those patients with complex LMCA bifurcation lesions. In this strategy, the 2-stent approach was associated with markedly worse 5-year clinical outcomes than the 1-stent approach.

P2642Long-term outcomes of unprotected left main coronary artery bifurcation lesions treated by second-generation drug-eluting stent implantation: 1-stent vs. 2-stent strategy

P2642Long-term outcomes of unprotected left main coronary artery bifurcation lesions treated by second-generation drug-eluting stent implantation: 1-stent vs. 2-stent strategy

TCT-396 Performance of drug-coated balloons on in-stent restenosis after two-stent implantation for left main coronary artery bifurcation lesions

The characteristics of in-stent restenosis (ISR) after two-stent implantation for left main coronary artery (LMCA) bifurcation lesions have been reported; however, the long term performance of drug-coated balloons (DCBs) on them is not well known. We performed DCB angioplasty in 47 ISR lesions

Design and rationale for the treatment effects of provisional side branch stenting and DK crush stenting techniques in patients with unprotected distal left main coronary artery bifurcation lesions (DKCRUSH V) Trial

BackgroundProvisional stenting (PS) is effective for great majority of patients with coronary bifurcation lesions. Double kissing (DK) crush approach demonstrated significant reduction of target lesion revascularization (TLR) for patients with more complex bifurcation lesion when compared with PS. Furthermore, DK crush technique was associated with lower rate of composite major adverse cardiac event (MACE), revascularization and stent thrombosis (ST) for patients with unprotected distal left main coronary artery bifurcation lesions (ULMb), compared to culotte stenting approach. The DKCRUSH V trial is designed to elucidate the benefits of DK crush over PS in patients with ULMb. Study designDKCRUSH V is a randomized, prospective, multinational clinical trial designed to evaluate the efficacy and safety of DK crush over PS for patients with ULMb. Subjects with Medina 1,1,1 or 0,1,1 ULMb will be randomized in a 1:1 fashion to PS or DK crush. The primary endpoint is target lesion failure (TLF) including target vessel myocardial infarction, cardiac death and TLR. Other endpoints address individual event of primary endpoint, and target vessel revascularization. The safety objective is the ST. Recruitment began in January 2012 and was completed in December 2015; 484 patients were randomized. The trial will continue until at least 56 adjudicated primary endpoints occur. ConclusionsThe DKCRUSH V study is investigating if DK crush approach versus PS will reduce the incidence of TLF in patients with symptomatic ULMb.

TCTAP A-039 Could Novel Bio-SYNTAX Score Predict Mortality in Patients Undergoing Percutaneous Coronary Intervention with Left Main Coronary Artery Bifurcation Lesions?

TCTAP A-039 Could Novel Bio-SYNTAX Score Predict Mortality in Patients Undergoing Percutaneous Coronary Intervention with Left Main Coronary Artery Bifurcation Lesions?