Google's Pixel Watch 3 Introduces FDA-Approved AI-Powered Loss of Pulse Detection Feature

Google Introduces Groundbreaking Health Feature for Pixel Watch 3

Google has received FDA clearance for a potentially life-saving feature on its Pixel Watch 3. The Loss of Pulse Detection feature, a first of its kind in the smartwatch industry, is designed to detect when a user's heart stops beating and automatically call for emergency assistance 1

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How the Feature Works

The Loss of Pulse Detection feature utilizes the watch's existing heart rate sensor in conjunction with an AI algorithm to monitor the user's pulse continuously. If the watch detects a loss of pulse due to events such as cardiac arrest, respiratory or circulatory failure, overdose, or poisoning, it initiates a series of actions 2

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1. Activates more accurate infrared LEDs
2. Checks for motion data
3. Starts a countdown and audio alarm if no response is detected
4. Automatically calls emergency services, providing location information and notifying them of the loss of pulse

Advanced AI and Development Process

To develop this feature, Google collaborated with cardiologists to understand the characteristics of pulse loss as detected by a smartwatch. The company then built an AI algorithm using this data and tested it with hundreds of thousands of hours of real-life user data from a diverse group of people 3

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Google also employed stunt actors wearing tourniquets to simulate pulse loss and recreate falls that might occur during such events. This thorough testing process aimed to ensure the feature's accuracy and reliability.

Comparison with Other Smartwatches

While safety features like fall detection and crash detection are not new to smartwatches, the Loss of Pulse Detection feature sets a new standard in health monitoring. Unlike other smartwatches that track heart rate less frequently, the Pixel Watch 3 offers more continuous monitoring. For instance, the Apple Watch typically checks heart rate every 3 to 7 minutes by default 1

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Potential Impact and Availability

The CDC reports that 356,000 people experience out-of-hospital cardiac arrest annually in the United States, with a 60% to 80% mortality rate before reaching the hospital 4

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Google plans to roll out the Loss of Pulse Detection feature to Pixel Watch 3 users in the United States by the end of March through a software update. The feature will be accessible in the watch's Safety & emergency settings 4

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