CSC Cardiac Nursing Subspecialty

Answer: B - Some ventricular arrhythmias such s ventricular fibrillation can be life threatening. Sick sinus syndrome definitely causes an arrhythmia. An arrhythmia is defined as a condition that involves dysregulation of cardiac electrical activity. Arrhythmias can cause a slow, rapid, or irregular heartbeat. Tachycardia is a condition in which the heart beats faster than normal; bradycardia is a condition that occurs when the heart beats slower than normal.
There are many types of arrhythmias including premature beats, supraventricular arrhythmias, ventricular arrhythmias, and bradyarrhythmias. Premature beats can originate in both atria and the ventricles. Supraventricular arrhythmias originate in the atria and include atrial fibrillation, atrial flutter, and Wolf-Parkinson-White syndrome.