Assertion: ecg | /r/HasProperty | medical test
Facets:
Source sentences:
text: A 3-lead electrocardiogram (ECG or EKG) is a medical test that helps a physician observe heart beat, heart rate, and heart rhythm.
text: A 12-lead electrocardiogram (ECG) is a medical test that is recorded using 12 leads, or nodes, attached to the body.