cardiac rhythm

ECG Tracing with Heart Contraction

Posted on November 24, 2025 by anatomy

ECG Tracing with Heart Contraction: An ECG tracing reflects heart electrical activity, with the P wave representing atrial contraction, QRS complex indicating ventricular contraction, and T wave showing ventricular repolarization.

SA Node Tracing

Posted on October 29, 2025 by anatomy

SA Node Tracing: An SA node tracing highlights the start of electrical impulses in the heart, initiating atrial contraction and setting the pace for the cardiac cycle.