Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The WatchQT study will compare the performance of a smartwatch combined with Cardiologs ECG AI Analysis system in monitoring corrected QT (QTc) intervals with that measured on a manually read 12-lead ECG in subjects with Normal Sinus Rhythm (NSR) during antiarrhythmic drug (AAD) initiation and follow-up at the hospital.
The WatchQT Study is a prospective, non-significant risk, non-randomized, monocentric, open, comparative, concordance pilot study.
Under subject consent, subjects hospitalized for AAD initiation and monitoring will have smartwatch ECG recordings done simultaneously with 12-lead ECG measurements before and after drug administration twice a day, in accordance with the existing in-stay subject monitoring protocol.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cardiologs | Device | Apple Watch recordings interpreted by Cardiologs AI done simultaneously with each 12-lead ECG |
|
| Measure | Description | Time Frame |
|---|---|---|
| Concordance between QTc intervals (in ms) measured by smartwatch combined with Cardiologs AI and that measured by manually read 12-lead ECG | Concordance between QTc intervals measured by smartwatch combined with Cardiologs AI and that measured by manually read 12-lead ECG for each measurement done during NSR. The Bazett (QTcB in ms) and Fridericia (QTcF in ms) methods will be used to correct QT intervals | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Measure | Description | Time Frame |
|---|---|---|
| Description of the sensitivity and specificity of the smartwatch combined with Cardiologs AI | Description of the sensitivity and specificity of the smartwatch combined with Cardiologs AI in determining subjects at risk of AAD induced ventricular arrhythmia compared to that identified by manually read 12-lead ECG in subjects with a prolonged QTc > 500 ms and/or subjects with a QTc prolongation of > 15% after their initial AAD dose |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
30 to 50 Subjects: Subjects who are being hospitalized for antiarrhythmic drug (AAD) initiation and monitoring per standard of care.
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Jagmeet Singh, MD ScM DPhil | Massachusetts General Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Massachusetts General Hospital | Boston | Massachusetts | 02114 | United States |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| D001281 | Atrial Fibrillation |
| ID | Term |
|---|---|
| D001145 | Arrhythmias, Cardiac |
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
| D010335 | Pathologic Processes |
Not provided
Not provided
Not provided
Not provided
Not provided
| Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Concordance between QTcB and QTcF intervals measured by the different methods | Concordance between QTcB and QTcF intervals measured by the different methods (smartwatch combined with Cardiologs AI, smartwatch read manually, 12-lead read manually, lead 1 from 12-lead read manually and automated interpretation of the 12 lead ECG machine) | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Description of the QTc interval measurements in NSR | Description of the QTc interval measurements in NSR as a function of timepoints by the different methods | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Quantitative analysis to determine the interobserver variability | Quantitative analysis to determine the interobserver variability in QTc interval measurements by the smartwatch and 12-lead ECG manual readings | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Description of the QT interval defined as uncertain by the smartwatch combined with Cardiologs AI | Description of the QT interval defined as uncertain by the smartwatch combined with Cardiologs AI | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Descriptive analysis of QT interval measurements in AF measured by smartwatch combined with Cardiologs AI and manually read 12-lead ECG | .Descriptive analysis of QT interval measurements in AF measured by smartwatch combined with Cardiologs AI and manually read 12-lead ECG at each timepoint and overall. | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| Analysis of QT interval measured in subsets of subjects with and without wide QRS | Patient with wide QRS is determined as a QRS>120ms at D0 from automated interpretation of the 12-lead ECG machine. The analysis will be done in subset of 2 groups according to the QRS measured as wide or not machine | Readings taken simultaneously right before and 2-3 hours after drug administration during hospitalization |
| D013568 |
| Pathological Conditions, Signs and Symptoms |