Better Outcomes for Anticoagulation Treatment Through Observation of Atrial Rhythm (BOAT OAR)

Saint Luke's Health System

Status: Completed

Conditions: Non-valvular Atrial Fibrillation

Treatments: Device: Alive Cor Kardia mobile electrocardiogram monitor

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT03515083

CV185-584

Details and patient eligibility

About

There is a need to determine actual compliance of direct oral anticoagulants and how to improve this to reduce risk of stroke in patients with atrial fibrillation. Mobile health tools have been implemented world-wide in various patient populations as means of reducing cardiovascular risk and improving disease management. Results of these interventions have been mixed with some interventions demonstrating significant improvement while others demonstrated no difference between the intervention group and the control group. More importantly, these studies indicate that implementation of mobile health tools is feasible in various patient populations and it may just be a matter of finding the correct intervention for a given disease state. The aim of this study is to increase awareness of atrial fibrillation as a means of improving compliance with anticoagulant medication.

Full description

The primary hypothesis of this study is that patients with atrial fibrillation will have improved compliance with apixaban therapy if they complete a daily measurement of heart rhythm via a smartphone electrocardiogram monitor, as compared to patients managed in a conventional manner.

Primary Endpoint

1. Primary Endpoint 1: is the percent compliance with apixaban therapy as measured by the amount of apixaban medication that was consumed per month. Compliance is defined as "the extent to which a patient acts in accordance with the prescribed interval and dose of a dosing regimen." Percent compliance will be measured as a continuous variable and strict cutoffs for 'compliant' and 'non-compliant' status will not be imposed.

   Secondary Endpoints

2. Secondary Endpoint 1: is the number of deaths from any cause, stroke, and hospitalization for atrial fibrillation and/or congestive heart failure. Given the low numbers of patients in this study, this will be a composite endpoint of all of these outcomes, since there is insufficient sample size to examine each outcome individually.

3. Secondary Endpoint 2: is the self assessment of atrial fibrillation symptom severity through the use of a standardized scale.

While the secondary endpoints are not directly related to the primary endpoint, there is a possibility that the intervention may lead to changes in health maintenance behavior, which may lead to differences in the secondary endpoints. While this study may not be powered to differentiate between these secondary endpoints, if a trend is noted, this may be hypothesis generating for future studies.

Enrollment: 100 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Non-valvular atrial fibrillation that is either paroxysmal, persistent or permanent
2. CHA2DS2VASc score of 2 or more
3. Eligible for therapy with apixaban for at least 6 months
4. Possession of a smartphone capable of pairing with the AliveCor Kardia cardiac monitor

Exclusion criteria

1. Contraindication to anticoagulation with apixaban for at least 6 months
2. No access to a smartphone capable of pairing with the AliveCor Kardia cardiac monitor
3. Unable to provide informed consent for this protocol

Trial design

Primary purpose: Supportive Care

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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100 participants in 2 patient groups

Experimental

Experimental group

Description:

In the experimental group, each patient will be issued an AliveCor Kardia electrocardiogram monitor that is compatible with their smartphone. Patients will be instructed on the use of the monitor at the initial visit with the study nurse. The patient will submit daily electrocardiogram transmission via on online portal. The study nurse may contact them via text message to remind them to submit their recordings, if they forget. The remainder of the treatment of the experimental group will be identical to the control group. At the conclusion of the study, the patient will complete their final atrial fibrillation symptom assessment scale. Their smartphone electrocardiogram monitor will be reviewed to ensure that all of the recordings were retrieved successfully.

Treatment:

Device: Alive Cor Kardia mobile electrocardiogram monitor

Control

No Intervention group

Description:

Patients in the control group would receive the standard of care treatment for atrial fibrillation, including cardioversion and ablation as indicated. At monthly visits with the study nurse, a smartphone electrocardiogram monitor will be used to record patient's heart rhythm. No other intervention would be performed during the monthly visit. It is necessary to meet the subject at least once per month to receive the previous month's supply of pills and provide them with the next month's supply of pills. If these subjects were met less frequently, it is possible that the previous month's supply of pills might be lost by the end of the study. During the study, if the patient is taken off anticoagulation due to medical contraindication or after an ablation, they will continue to be followed monthly but will not receive apixaban medication.