…regardless of heart rate) among persons with heart disease. Alternating block (right and left bundle branch block alternating from one beat to another) is uncommon…

…and potential future refinements underscore its enduring relevance in cardiology. By combining anatomical and clinical data, it continues to support heart teams in delivering persona

…IHCA). There are no risks in instructing a layperson to perform chest compressions on an unconscious individual. The potential benefit outweighs the risks. Several studies…

…note that bradycardia due to dysfunction in the sinoatrial node is referred to as sinus node dysfunction (SND). If a person with ECG signs of…

…note that bradycardia due to dysfunction in the sinoatrial node is referred to as sinus node dysfunction (SND). If a person with ECG signs of…

…Population to which SCORE2 and SCORE2 OP apply SCORE2 and SCORE2 OP are intended for apparently healthy people or for individuals with elevated BP who…

…healthy individuals. Atrial flutter causes characteristic ECG changes, as discussed below. Atrial flutter tends to accompany atrial fibrillation, although some individuals may only present with…

…the arrhythmia is unusual among persons younger than 50 years of age. The overall prevalence in a Western population is 1.0% to 1.5%…

…inability to adequately increase heart rate Chronotropic incompetence is an independent predictor of overall and cardiovascular mortality. The condition is very common among individuals with…

…the atherosclerotic artery. Whenever oxygen demand exceeds oxygen (blood) delivery ischemia occurs and this manifests with chest discomfort referred to as angina pectoris. If the…