US Patent 10052043 Medical device for sensing cardiac function

According to at least one aspect, a medical device is provided. The medical device includes at least one electrode to sense an electrocardiogram (ECG) signal of a patient and a controller coupled to the at least one electrode. The controller may be configured to generate a first ECG template based on a first ECG signal of the patient, generate a second ECG template based on a second ECG signal of the patient, and determine whether the patient is experiencing a cardiac event based on the ECG signal of the patient and an identified one of the first ECG template and the second ECG template.