SnapECG can measure your heart rhythm, evaluate your normal heart rate and heart rhythm trend. Other measurements include: Ventricular Ectopic Beats (Premature ventricular contraction); Supraventricular Ectopic Beats (Premature atrial contraction); Atrial Fibrillation; Myocardial infarction – limited to 1-lead ECG; Abnormal ST-segment changes; QRS complexes; P wave duration, QRS complex duration, PR interval, QT interval; Heart rate, heart rate variability; Ventricular hypertrophy. Back to all FAQ