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ASCEND CSP IDE Study

A Stylet-Driven ICD Lead Intended for Conduction System Pacing IDE Study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06830746
Acronym
ASCEND CSP IDE
Enrollment
414
Registered
2025-02-17
Start date
2025-04-11
Completion date
2028-05-01
Last updated
2026-03-18

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

Conditions

Heart Failure, Ventricular Arrythmia

Keywords

ICD, CRT-D, LBBAP, conduction system pacing, lead

Brief summary

This is a prospective, multi-center, global, single-arm, pivotal investigational study designed to evaluate the safety and effectiveness of the CSP ICD Lead in a subject population indicated for ICD or CRT-D therapy. The clinical investigation will enroll up to 414 subjects at up to 70 participating centers from the United States, Canada, Europe, and Asia Pacific.

Interventions

DEVICELBBAP Implant with a CSP ICD Lead

Required electrical testing for pacing, sensing, impedance and defibrillation will be completed

Sponsors

Abbott Medical Devices
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

1. Subject must meet current clinical practice guidelines for implantation of ICD or CRT-D and will undergo one of the following: 1. de novo Abbott ICD system implant (single or dual chamber) 2. de novo Abbott CRT-D system implant and is intended to also undergo left ventricle coronary sinus lead implant (for patients indicated for CRT-D according to locally approved indications) 2. Subject is ≥ 18 years of age or age of legal consent, whichever age is greater. 3. Subject is willing to undergo implant defibrillation testing if requested. Subjects with AF in whom defibrillation testing is required must have been on or willing to be on uninterrupted anticoagulation therapy before, during, and after the implant procedure. 4. Subject is willing to comply with clinical investigation procedures and agrees to return to clinic for all required follow-up visits, tests, and exams. 5. Subject has been informed of the nature of the clinical investigation, agrees to its provisions and has provided a signed written informed consent, approved by the IRB/EC.

Exclusion criteria

1. Subject has had myocardial infarction or unstable angina within 40 days prior to signing consent 2. Subject has had recent cardiac revascularization (angioplasty, stent or bypass graft) in the 4 weeks prior to signing consent or planned within 3 months following consent 3. Subject has had any other therapeutic cardiovascular procedure (such as transcatheter aortic valve replacement, MitraClip, cardiac surgery, left atrial appendage closure, patent foramen ovale closure, or any ablation procedures) in the 3 months prior to signing consent or planned within 3 months following consent 4. Subject has had a recent Cerebrovascular Accident (CVA) or Transient Ischemic Attack (TIA) within 3 months of prior to signing consent 5. Subject has a life expectancy of less than 12 months 6. Subject has contraindications for standard RV transvenous and/or LBBAP lead placement (e.g., mechanical right heart valve) 7. Subject is contraindicated for ≤1mg Dexamethasone sodium phosphate. 8. Subject is pregnant or breastfeeding women, or women of childbearing potential and who are not on a reliable form of birth regulation method or abstinence 9. Subject has an existing pacemaker (including a temporary pacing system), ICD, CRT, or cardiac contractility modulation (CCM) device or leads 10. Subject has any evidence of active infection or undergoing treatment for an infection 11. Subject is enrolled or planning to enroll in another clinical trial that might confound the results of the present study 12. Subject has moderate or severe aortic stenosis 13. Subject has ventricular septal defect (VSD) or had prior surgery on the interventricular septum that could impact LBBAP implant, such as septal myomectomy, ethanol septal ablation, VSD repair, etc 14. Subject has end-stage renal disease 15. Subject has NYHA IV classification 16. Subject has undergone cardiac transplantation or have a classification of Status 1 for cardiac transplantation or consideration for transplantation during the study follow-up period 17. Subject has had previously extracted leads 18. Subject has had an LV Assist Device 19. Subject has had a failed LBBAP lead implant Defibrillation testing

Design outcomes

Primary

MeasureTime frameDescription
Primary Safety Endpoint3 months post-implantFreedom from CSP ICD Lead-related Serious Adverse Device Effects (SADEs) through 3 months post-implant for subjects in which the CSP ICD Lead implant was attempted
Primary Effectiveness Endpoint 13-months post-implant3-month composite success rate of acceptable pacing capture thresholds and R-wave sense amplitudes of the CSP ICD Leads in the subjects with the CSP ICD Lead implanted at the LBBA
Primary Effectiveness Endpoint 2at implantSuccess rate of the defibrillation testing at implant in the subjects who complete the defibrillation test with the CSP ICD Lead implanted at the LBBA

Countries

Australia, Canada, France, Hong Kong, India, Italy, Singapore, Spain, Switzerland, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 19, 2026