ECG
A technique that records the heart's electrical activity by placing electrodes on a device, and can be used to detect arrhythmias such as atrial fibrillation. Implementing ECG in a wristband requires additional electrodes and algorithm certification, making its cost and technical threshold higher than those of conventional heart-rate sensors.
Timeline (last 90 days)
ECG requires at least two electrodes to form a circuit with the skin to measure the heart's electrical signals, and it is extremely sensitive to electrode position and contact quality.
The electrocardiogram (ECG) function and atrial fibrillation (AFib) detection function of Apple Watch have received De Novo or 510(k) classification authorization from the U.S. FDA, classifying them as Class II medical devices.
The ECG feature on Apple Watch was first introduced in 2018 with the Series 4.
Apple Watch is equipped with two cardiac monitoring systems: a PPG photoplethysmography sensor on the back of the watch and an electrode-based ECG sensor on the crown.
Apple Watch records a single-lead (Lead I) electrocardiogram, capturing 30 seconds of ECG data.
All Facts (6)
PPG技术容易受到皮肤色素、佩戴松紧度、运动伪影等因素干扰，导致消费级设备与医疗级心电图（ECG）之间存在精度差距
90%UnverifiedApple Watch records a single-lead (Lead I) electrocardiogram, capturing 30 seconds of ECG data.
60%UnverifiedECG requires at least two electrodes to form a circuit with the skin to measure the heart's electrical signals, and it is extremely sensitive to electrode position and contact quality.
50%UnverifiedThe electrocardiogram (ECG) function and atrial fibrillation (AFib) detection function of Apple Watch have received De Novo or 510(k) classification authorization from the U.S. FDA, classifying them as Class II medical devices.
50%UnverifiedThe ECG feature on Apple Watch was first introduced in 2018 with the Series 4.
50%UnverifiedApple Watch is equipped with two cardiac monitoring systems: a PPG photoplethysmography sensor on the back of the watch and an electrode-based ECG sensor on the crown.
50%