Consumer-facing Diagnostic Sensors in a Patient with Implantable Cardioverter-Defibrillator

Area of Science:

• Cardiology
• Digital Health
• Medical Devices

Background:

• The Apple Watch, introduced in 2015, has gained widespread consumer adoption.
• It features FDA-cleared algorithms for detecting heart rhythm abnormalities like bradycardia, tachycardia, and atrial fibrillation.
• The latest models offer real-time electrocardiogram (ECG) acquisition capabilities.

Observation:

• A case study involving an individual using an Apple Watch is presented.
• The smartwatch's algorithm flagged an instance of atrial fibrillation.

Findings:

• The detection of atrial fibrillation by the Apple Watch was corroborated.
• An implantable cardioverter-defibrillator (ICD) confirmed the accuracy of the smartwatch's detection using stored electrograms.

Implications:

• This case potentially represents the first documented instance of an Apple Watch accurately detecting atrial fibrillation.
• It underscores the potential of consumer wearable technology in cardiac monitoring.
• Findings suggest a role for smartwatches in complementing traditional diagnostic methods for arrhythmias.