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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04569734
Other study ID # 19-012524
Secondary ID
Status Completed
Phase
First received
Last updated
Start date September 22, 2020
Est. completion date December 15, 2023

Study information

Verified date December 2023
Source Mayo Clinic
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The aim of this multi-center study will be to assess the feasibility and safety of left atrial appendage (LAA) occlusion with the WATCHMANâ„¢ device using a standardized intra-procedural intracardiac echocardiography (ICE) protocol under moderate sedation for procedural guidance. By eliminating the need for general anesthesia, the hope is to show a reduction in procedural time, decrease use of supplemental invasive procedures (central venous line, invasive arterial pressure monitoring and transesophageal echocardiography) and quicker patient recovery time. This approach can decrease healthcare resource utilization and safely simplify left atrial appendage closure with the WATCHMAN device.


Description:

The study will be a prospective, non-randomized multicenter registry of 100 patients undergoing LAA closure with the WATCHMAN device (possibly with WATCHMAN FLX when approved) utilizing an intra-procedural ICE probe under moderate sedation. The primary feasibility endpoint will be ability to successfully implant the WATCHMAN device. Implant success is defined as confirmation of the device-specified release PASS (Position, Anchor, Size, Seal) criteria, successful device release, and adequate seal (defined as a residual leak <5 mm) as assessed by a core lab interpretation of the TEE 45 days post-implant. The primary safety endpoint will be a composite of major complications (major bleeding [intracranial bleeding, or bleeding requiring blood transfusion], pericardial effusion requiring pericardiocentesis or surgery, device embolization, procedural-related stroke, or procedural related death). Additional measured end points will be: freedom from conversion to general anesthesia and/or standard TEE during implant, the incidence and the size of iatrogenic atrial septal defect on 45 day TEE. The ICE procedural images will also be collected and analyzed by an independent committee composed of non-implanting interventionalist, and an imaging specialist. The images will be graded in quality as optimal (TEE equivalent), acceptable (adequate but not as detailed as TEE), and inadequate. This prospective study, along with its endpoints will be registered in clinicaltrials.gov.


Recruitment information / eligibility

Status Completed
Enrollment 101
Est. completion date December 15, 2023
Est. primary completion date December 15, 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - The patients is eligible to undergo WATCHMAN device implant procedure - The patient is eligible for short term anticoagulation therapy - Ability to tolerate the procedure without the need for general anesthesia as assessed by the treating physician(s) - Ability to give informed consent for the procedure - The patient is able and willing to undergo the procedure under moderate sedation - The patient is able and willing to return for required 45-day TEE. Exclusion Criteria: - Patient has contraindication for short term anticoagulation - The patient has history of a hypercoagulable state per medical record documentation - Pregnancy or planning to get pregnant during the investigation.

Study Design


Related Conditions & MeSH terms

  • Left Atrial Appendage Closure With WATCHMAN Device Utilizing an Intra-procedural ICE Probe

Intervention

Procedure:
WATCHMAN device implant procedure utilizing ICE probe
The study will be a prospective, non-randomized multicenter registry of 100 patients undergoing LAA closure with the WATCHMAN device (possibly with WATCHMAN FLX when approved) utilizing an intra-procedural ICE probe under moderate sedation.

Locations

Country Name City State
United States Mayo Clinic Rochester Rochester Minnesota
United States Pacific Heart Institute Santa Monica California

Sponsors (1)

Lead Sponsor Collaborator
Mayo Clinic

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Successfully implant the WATCHMAN device Implant success is defined as confirmation of the device-specified release PASS (Position, Anchor, Size, Seal) criteria, successful device release, and adequate seal (defined as a residual leak <5 mm) as assessed by a core lab interpretation of the TEE 45 days post-implant 45 days post-implant
Primary Absence of a composite of major complications Absence of a composite of major complications such major bleeding [intracranial bleeding, or bleeding requiring blood transfusion], pericardial effusion requiring pericardiocentesis or surgery, device embolization, procedural-related stroke, or procedural related death) 7 days post-implant
Primary Absence of a composite of major complications Absence of a composite of major complications such major bleeding [intracranial bleeding, or bleeding requiring blood transfusion], pericardial effusion requiring pericardiocentesis or surgery, device embolization, procedural-related stroke, or procedural related death) 45 days post-implant
Secondary Freedom from conversion to general anesthesia and/or standard TEE during implant Freedom from conversion to general anesthesia and/or standard TEE during implant During procedure
Secondary Freedom from the incidence and the size of iatrogenic atrial septal defect Freedom from the incidence and the size of iatrogenic atrial septal defect on 45 day TEE 45 days post-implant

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