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A premature ventricular contraction (PVC) is a common event where the heartbeat is initiated by Purkinje fibers in the ventricles rather than by the sinoatrial node. PVCs may cause no symptoms or may be perceived as a "skipped beat" or felt as palpitations in the chest. PVCs do not usually pose any danger. [1]
Heart failure can be a complication of any condition that causes damage to your heart tissues, such as an infection, heart attack, or valve disorder. Heart failure is categorized by a measurement ...
It is a form of cardiac arrhythmia in which ectopic foci within either ventricular or atrial myocardium, or from finer branches of the electric transduction system, cause additional beats of the heart. Some medications may worsen the phenomenon. [citation needed] Ectopic beats are considered normal and are not indicative of cardiac pathology.
The second Cardiac Arrhythmia Suppression Trial (CAST II) modified the enrollment criteria to include patients at higher risk for serious arrhythmia. [4] This included 1) patients enrolled within 4 to 90 days of a previous MI, 2) a left ventricular ejection fraction lower than 40%, 3) prior to enrollment, suppression of PVCs had occurred with the drugs (vs. placebo) using a double-blinded ...
Perhaps confusingly, heart failure can be caused by coronary artery disease (CAD) and myocardial infarction (MI) that result in a deficiency in pumping that then leads to heart failure. Treatment of heart failure, like most secondary disorders, depends upon treatment of the primary cause which includes CAD & MI but also valvular problems like ...
When symptoms grow worse (more on this later), heart failure can cause swelling in the ankles and legs, as well as swollen feet. This is due to edema, which is a fluid accumulation in the body ...
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