Assessment of the WATCHMAN™ Device in Patients Unsuitable for Oral Anticoagulation



Status:Recruiting
Conditions:Neurology
Therapuetic Areas:Neurology
Healthy:No
Age Range:18 - Any
Updated:10/21/2018
Start Date:February 1, 2017
End Date:December 2023
Contact:Jennifer Williams
Email:Jennifer.Williams2@bsci.com
Phone:1-800-CARDIAC

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Assessment of the WATCHMAN™ Device in Patients Unsuitable for Oral Anticoagulation (ASAP-TOO)

The purpose of this study is to establish the safety and effectiveness of the WATCHMAN™ Left
Atrial Appendage Closure (LAAC) Device, including the post-implant medication regimen, for
subjects with non-valvular atrial fibrillation who are deemed not to be eligible for
anti-coagulation therapy to reduce the risk of stroke.

The ASAP-TOO study is a prospective, randomized, multi-center, global investigation to
establish the safety and effectiveness of the WATCHMAN Device for subjects with non-valvular
atrial fibrillation who are deemed not suitable for anti-coagulation therapy to reduce the
risk of stroke.

Subjects will be randomized in a ratio of 2 Device to 1 Control to receive the WATCHMAN LAA
closure device (Device) or the control treatment of single antiplatelet medication or no
medication at the discretion of the study physician (Control). All randomized subjects will
follow the protocol required tests and assessments at each scheduled follow-up visit.

Inclusion Criteria:

- The subject is of legal age to participate in the study per the laws of their
respective geography.

- The subject has documented paroxysmal, persistent, permanent or long-term/longstanding
persistent non-valvular atrial fibrillation (i.e., the subject has not been diagnosed
with rheumatic mitral valvular heart disease).

- The subject has a calculated CHA2DS2-VASc score of 2 or greater.

- The subject is deemed by two study physicians to be unsuitable for oral
anticoagulation.

- The subject is deemed by a study physician to be suitable for the defined protocol
pharmacologic regimen of aspirin and clopidogrel therapy following WATCHMAN Closure
Device implant.

- The subject or legal representative is able to understand and willing to provide
written informed consent to participate in the trial.

- The subject is able and willing to return for required follow-up visits and
examinations.

Exclusion Criteria:

- The subject is unable or unwilling to return for required follow-up visits and
examinations.

- The subject had or is planning to have any invasive cardiac procedure within 30 days
prior to randomization (e.g., cardioversion, ablation).

- The subject is planning to have any cardiac or non-cardiac invasive or surgical
procedure that would necessitate stopping or modifying the protocol required
medication regimen within 90 days after the WATCHMAN Closure Device implant (e.g.,
cardioversion, ablation, cataract surgery).

- The subject had a prior stroke (of any cause) or TIA within the 30 days prior to
randomization.

- The subject had a prior BARC type 3 or 4 bleeding event within the 14 days prior to
randomization. Lack of resolution of related clinical sequelae, or planned and pending
interventions to resolve bleeding/bleeding source, are a further exclusion regardless
of timing of the bleeding event.

- The subject has a history of atrial septal repair or has an ASD/PFO device.

- The subject has an implanted mechanical valve prosthesis in any position.

- The subject suffers from New York Heart Association Class IV Congestive Heart Failure.

- The subject has LVEF < 30%.

- The subject is of childbearing potential and is, or plans to become pregnant during
the time of the study (method of assessment upon study physician's discretion).

- The subject is currently enrolled in another investigational study or registry that
would directly interfere with the current study, except when the subject is
participating in a mandatory governmental registry, or a purely observational registry
with no associated treatments. Each instance should be brought to the attention of the
sponsor to determine eligibility.

- The subject has a life expectancy of less than two years.

- The subject has a known or suspected hypercoagulable state.
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