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Feasibility of PCI Using a 7-Fr Thin-Walled Sheath Via the DRA

Feasibility of Percutaneous Coronary Intervention Using a 7-Fr Thin Walled Sheath Via the Distal Radial Approach: a Prospective Observational Study (SEVEN-BOX)

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05006027
Acronym
SEVEN-BOX
Enrollment
100
Registered
2021-08-16
Start date
2021-08-16
Completion date
2024-10-15
Last updated
2025-11-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Complex Intervention, Coronary Artery Disease, Distal Radial Artery

Keywords

distal radial artery, coronary artery disease, percutaneous coronary intervention

Brief summary

To evaluate the safety and effectiveness of percutaneous coronary intervention using a 7-French(Fr) thin-walled sheath via the distal radial approach

Detailed description

Recently, coronary angiography (CAG) and percutaneous coronary intervention (PCI) via the distal radial artery access (DRA) have shown several advantages owing to fewer complications, such as radial artery occlusion, pseudoaneurysms, and arteriovenous(AV) fistulas, and short hemostasis duration than the proximal radial access (PRA). However, despite the potential advantages of the DRA, there are still many cardiologists who prefer the femoral approach for complex PCI including left main disease, bifurcation lesions, heavily calcified lesions, which need a strong backup and using several devices. The radial artery and the distal radial artery have a smaller diameter than the femoral artery, and interventional cardiologists are usually performed using the 6-Fr sheath. The previously developed 7-Fr sheath has a higher risk of vascular occlusion when use in a radial artery due to larger diameter compared to radial artery in 30% to 60% of patients. However, with the recent development of various technologies, the outer diameter of the sheath is gradually becoming thinner and recently a 7-Fr thin-walled sheath which does not differ significantly from the outer diameter of the 6-Fr sheath used in the previously PRA demonstrated that feasibility and safety for radial artery intervention. Despite the feasibility and potential benefits of the DRA and 7-Fr thin-walled sheath for radial artery, there is a lack of data regarding the safety and efficacy of a 7-Fr thin-walled sheath during the DRA.

Interventions

PROCEDUREPercutaneous coronary intervention via the distal radial approach

Percutaneous coronary intervention using a 7-Fr thin walled sheath (Prelude IDeal, MERIT MEDICAL, South Jordan, UT, USA) via the distal radial approach

Sponsors

Severance Hospital
CollaboratorOTHER
Merit Medical Systems, Inc.
CollaboratorINDUSTRY
Yonsei University
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
19 Years to No maximum

Inclusion criteria

* Patients, ≥ 19 years of age, who were diagnosed with ischemic heart disease requiring percutaneous coronary intervention (PCI) * Patients who are palpable distal radial artery * The decision to participate voluntarily in this study and the written consent of the patient * Patients who planned to perform PCI using a 7-Fr thin-walled sheath

Exclusion criteria

* Patients who are not palpable distal radial artery * Female of childbearing potential, who possibly plans to become pregnant any time after enrollment into this study * Pregnancy * Patients who are not appropriate for this study

Design outcomes

Primary

MeasureTime frameDescription
Access site complication during hospitalization and within 1-month follow-upThrough procedure completion, up to 1monthbleeding(defined by BARC criteria), hematoma (using modified EASY\[Early Discharge After Transradial Stenting of Coronary Arteries Study\] classification: A) Grade Ia hematoma was subclassified into 4 grades from the puncture site \[Grade 1, \<2cm; Grade2, 2-5cm; Grade3,\>5cm; and grade 4, hand swelling\], B) Grade Ib, wrist \< 5cm, C) Grade II, wrist \< 10cm, D) Grade III, forearm, E) Grade IV, upper arm), numbness, AV fistula, Pseudoaneurysm, and conventional and distal radial artery occlusion (assessed by manual palpation or ultrasonography\[prefer\])
Success rate of PCIThrough procedure completion, up to 1monthSuccess rate of PCI using 7-Fr sheath via the distal radial approach (%)

Secondary

MeasureTime frameDescription
Hemostasis durationThrough procedure completion, up to 24 hoursHemostasis duration using 7-Fr thin-walled sheath via the distal radial approach (minute)
Patency of proximal radial artery after hemostasisThrough procedure completion, up to 24 hoursPatency of proximal radial artery using 7-Fr thin-walled sheath via the distal radial approach by ultrasonography after hemostasis (%)
Patency of distal radial artery after 1 monthTime Frame: up to 1monthPatency of distal radial artery using 7-Fr thin-walled sheath via the snuffbox approach by ultrasonography after 1-month (%)

Other

MeasureTime frameDescription
If intravascular imaging modalities (OCT/IVUS) are seen during intervention, check for conventional radial radial artery complications through OCT/IVUSThrough procedure completionIf intravascular imaging modalities (OCT/IVUS) are seen during intervention, check for conventional radial radial artery complications through OCT/IVUS

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026