Which Cardiac Cells are Targeted by Antiarrhythmic Drugs?
Antiarrhythmic medications target various types of cardiac cells, including:
1. Pacemaker cells: These cells, located in the sinoatrial (SA) node, are responsible for initiating the heartbeat. 2. Conducting cells: Found in the atrioventricular (AV) node, bundle of His, and Purkinje fibers, these cells propagate the electrical signal. 3. Contractile cells: These are the main muscle cells in the atria and ventricles responsible for heart contractions.
