A heart rhythm disorder is an abnormal variation from the normal heartbeat. Heart rhythm disorders involve abnormalities of one or more of the following: heart rate, regularity of beats, sites where electrical impulses originate, or sequence of activation of heartbeats. Heart rhythm disorder is also...
In addition, the QRS width of PVC patients can increase by 120 to 210 ms compared to that of normal people, which is 60–80 ms1,8. However, it is difficult to accurately diagnose such episodic cardiac arrhythmias because their abnormalities are intermittently observed during normal heart rhythm...
Is the heart beating regularly or irregularly? Normal sinus rhythm is how the heart should beat (see cardiac cycle above). Atrial fibrillation is an example of an irregular heart rhythm. Other irregular heartbeats include premature atrial contractions (PAC), premature ventricular contractions (PVC),...