Ventricular tachycardia is a type of arrhythmia, or abnormal heart rhythm. Sometimes called VT or V-tach, it’s an unusually fast heartbeat that starts in the lower part of your heart called the ...
What Is a Normal Sinus Rhythm? Normal sinus rhythm is when your heart beats in a regular, organized way. Your body has a built-in pacemaker called the sinoatrial (SA) node, or sinus node. It uses ...
Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...
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