RT Book, Section A1 Stringer, Janet L. SR Print(0) ID 1142820983 T1 Antiarrhythmic Drugs T2 Basic Concepts in Pharmacology: What You Need to Know for Each Drug Class, 5e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259861079 LK accesspharmacy.mhmedical.com/content.aspx?aid=1142820983 RD 2024/03/28 AB Arrhythmias, disturbances of the normal rhythm of the heart, occur when the electrical conduction systems malfunction. The malfunction could result in a change in heart rate, rhythm, impulse generation, or conduction of electrical signals through the heart muscle. Nonpharmacological approaches to arrhythmias include the use of pacemakers, implantable defibrillators, and ablation of an aberrant conduction pathway.