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Clinical Outcomes of Drug-Coated Balloons in the Treatment of Patients With Coronary De Novo Chronic Total Occlusion Lesions

NCT07463664 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 200

Last updated 2026-03-11

No results posted yet for this study

Summary

The aim of this study is to evaluate the long-term efficacy and safety of drug-coated balloon (DCB) strategies, including DCB alone or hybrid strategies of DCB and drug-eluting stent (DES), compared to DES-only in patients with chronic total occlusion (CTO) after successful recanalization. Through a prospective, multicenter randomized controlled trial, we will directly compare the long-term outcomes of these two treatment strategies in CTO patients to fill the gap in existing research regarding direct comparative data between DCB and DES in CTO treatment. This study expects to provide high-quality evidence for optimizing CTO treatment, potentially improving treatment strategies in complex cases, reducing stent usage, lowering the risk of complications, and ultimately enhancing patient prognosis.

Conditions

  • Chronic Total Occlusions of Coronary Arteries
  • Chronic Total Occlusion (CTO)
  • Coronary Artery Disease (CAD)

Interventions

PROCEDURE

DES Implantation

Drug-eluting stents meeting study criteria (e.g., sirolimus-, paclitaxel-, or everolimus-eluting stents; specific models selected by operators according to clinical practice) were chosen. Stent diameter was determined by the target vessel reference diameter (2.25-4.0 mm), with length covering the occluded segment plus 5 mm of healthy vessel proximal and distal to the lesion. Stents were deployed at 8-16 atm to ensure optimal apposition. Intraoperative angiography confirmed no residual stenosis (\<10%) and TIMI grade 3 flow. When multiple stents were required, an overlapping technique was utilized to ensure complete lesion coverage.

PROCEDURE

DCB Angioplasty

Drug-coated balloons meeting study criteria (e.g., paclitaxel- or sirolimus-coated DCB; specific models selected by operators according to clinical practice) were chosen. DCB diameter was determined by the target vessel reference diameter (2.25-4.0 mm), with length covering the occluded segment plus 5 mm proximal and distal to the lesion. DCB inflation was maintained for ≥60 seconds at 8-12 atm to ensure adequate drug delivery to the vessel wall. Intraoperative angiography confirmed \<50% residual stenosis, TIMI grade 3 flow, and absence of serious complications. DES implantation was permitted (recorded as hybrid strategy) if any of the following conditions occurred after DCB application: Residual stenosis ≥50% with hemodynamic significance; Non-flow-limiting dissection requiring stent support based on operator judgment; Other technical difficulties resulting in DCB-alone treatment failure. DES selection was consistent with the DES-only group.

Sponsors & Collaborators

  • The First Affiliated Hospital of Zhengzhou University

    lead OTHER

Principal Investigators

  • Chunguang Qiu, Doctor · The First Affiliated Hospital of Zhengzhou University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-04-28
Primary Completion
2026-06-30
Completion
2026-12-31

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07463664 on ClinicalTrials.gov