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What are Cardiac Arrhythmias?

…alcohol, and stressful news. The combination can trigger a fatal series of rapid fired ventricular beats call ventricular tachycardia (or V-tach for short). Ventricular tachycardia, is an intense and prolonged racing of the heart—like a runaway PVC. And V-tach is dangerous because it can deteriorate…

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Intrinsic Cardiac Pacemakers

…intrinsic rate may be called a junctional tachycardia (or "junctional tach") or AV tachycardia (or AV tach). The term tachycardia is used whenever the heart rate exceeds the usual rate for the source of the electrical stimulation. So, a sinus tachycardia exceeds 100 bpm, and a junctional tach is faster…

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Respiratory Sinus Arrhythmia and PACs

…early beats, PACs can happen randomly, in couplets, in triplets or in foursomes. Four or more PACs in a row are described as a premature atrial tachycardia (PAT) or a supraventicular tach (SVT), as the beats are initiated from “above” the ventricles. A paroxysmal PAT or PSVT means that the burst…

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Civil War History of Stress and Heart Disease

…body position. This kind of "orthostatic intolerance" is also seen today in medical conditions such as mitral valve prolapse, postural orthostatic tachycardia syndrome (POTS), and chronic fatigue. He also observed symptom relief in more severe cases when the soldier was removed from the stress. Da Costa’s…

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Is Your Cell Phone Causing Heart Problems?

…heart region. * Thirty-six percent experienced autonomic vascular crisis: headache, tremor, syncope, brief loss of consciousness (LOC) and had tachycardia (abrupt, rapid heartbeat). * Two people had a heart attack. * One person developed atrial fibrillation. That was 1970. Then, in 2010 Canadian Magda…

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The SA Node: An Intrinsic Heart Pacemaker

Most people are familiar with the artificial heart pacemakers that we use to keep the heart beating, but many don’t realize that the body has built-in heart pacemakers of its own. Every cardiac cell is capable of automaticity (to fire on its own) and conductivity, but there is a specialized…

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