200318 EKG and Apple Watch

1. An update to watch OS gave users access to two FDA-cleared features on the Apple Watch - an irregular heart rhythm notification and an EKG app exclusive to the series 4, both of which could warn users of potentially life-threatening heart conditions. 2. So the heart rate is the frequency of the heartbeat over time but doesn't tell you anything about the pattern of those beats. The rhythm has more to do with the relative spacing of those beats. That's where the EKG comes in. 3. The EKG or electrocardiogram uses electrodes to measure the electrical activity that results from each expansion and contraction of the heart. The Apple Watch has one electrode on the back crystal and one electrode on the digital crown. Place your finger on the digital crown to close the circuit and stay still for 30 seconds to get a read. 1. 苹果手表操作系统的更新让用户得以使用手表上的两项FDA批准的功能——不规则心律的提醒和第4代独有的心电图应用，这两项功能都可以警告用户，发现潜在的威胁生命的心脏病。 2. 所以心率是随着时间的推移心跳的频率，但并不能告诉你这些心跳的模式。节奏与这些节拍的相对间距有很大关系。心电图就是从这里来的。 3. EKG或全称 electrocardiogram （心电图）通过使用电极来测量心脏每一次扩张和收缩所产生的电的运动。苹果手表背面的水晶后盖上有一个电极，数码表冠上有一个电极。把你的手指放在数字表冠上，关闭电路，保持30秒不动，以便读数。