Arrhythmias

Arrhythmias are deviations from the normal cadence of the heartbeat, which cause the heart to pump improperly.
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Arrhythmias, atrial: Abnormal heart rhythm due to electrical disturbances in the atria (the upper chambers of the heart) or the AV node "relay station", leading to fast heart beats.
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Arrhythmias are caused by a disruption of the normal electrical conduction system of the heart. Normally, the 4 chambers of the heart (2 atria and 2 ventricles) contract in a very specific, coordinated manner.
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Arrhythmias may cause you to feel premature beats, or you may feel that your heart is racing or beating too slowly. Other signs and symptoms may be related to diminished blood output from your heart.
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Arrhythmias can be divided into 2 main groups: tachycardias and bradycardias. Tachycardias cause a rapid heartbeat, with over 100 beats per minute. Bradycardias cause a slow heartbeat, with less than 60 beats per minute.
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Arrhythmias are caused by a disruption of the normal electrical conduction system of the heart. Normally, the four chambers of the heart (two atria and two ventricles) contract in a very specific, coordinated manner.
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Cardiac arrhythmias sometimes are classified according to their origin as either ventricular arrhythmias (originating in the ventricles) or supraventricular arrhythmias (originating in heart areas above the ventricles, typically the atria).
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Some of the most dangerous arrhythmias are those that affect the ventricles - the large muscular chambers of the heart. Ventricular arrhythmias can cause sudden death in someone who appeared previously fit and well.
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Arrhythmias, such as atrial fibrillation. When pericarditis accompanies myocarditis, other arrhythmias may be present, such as supraventricular tachycardia (SVT) or complete heart block.
Cardiac tamponade ...
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Arrhythmias can cause problems with contractions of the heart chambers by: ...
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Arrhythmias from heart inflammation (myocarditis)
Heart failure
Encephalitis
Pneumonia ...
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There are many different kinds of irregular heartbeats (arrhythmias). A heart rate less than 60 beats per minutes is called a bradycardia. A heart rate greater than 100 beats per minutes is called a tachycardia.
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Calcium-channel blockers are used to treat angina (chest pain due to poor blood flow and oxygen supply to heart muscle), arrhythmias (an irregular heart beat) and high blood pressure.
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Betapace AF can cause life-threatening ventricular arrhythmias; therefore, it should be reserved for patients in whom AFIB/AFL is highly symptomatic.
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Hyperkalemia can result in abnormal beating of the heart (cardiac arrhythmias). Low serum potassium (hypokalemia) occurs when serum potassium falls below 3.0 mM.
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Various arrhythmias can be symptoms of serious heart disorders; however, they are usually of no medical significance except in the presence of additional symptoms.
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Intraoperatively, blood pressure is controlled by titration of small doses of phentolamine or nitroprusside, and cardiac arrhythmias may be treated with propranolol or lidocaine.
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Those who were put on fish oil, or omega-3 supplements from fish oil, had a dramatic drop in arrhythmias, sudden death from arrhythmias, and repeat heart attack.
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Can result in cardiac arrhythmias and death. Normal blood potassium should be in the range of 3.8 to 5.0 milliequivalents per liter. Hypokalemia can occur secondary to a drug side effect, vomiting, or excessive diarrhea.
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In some patients with palpitations, no heart disease or abnormal heart rhythms can be found. In others, palpitations result from abnormal heart rhythms (arrhythmias).
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This is a heart medicine used to treat arrhythmias. This article profiles how it works and when it is recommended.
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A substance that is used to relieve pain by blocking signals at the nerve endings in skin. It can also be given intravenously to stop heart arrhythmias. It belongs to the families of drugs called local anesthetics and antiarrhythmics.
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The level drops if the kidneys excrete potassium into urine instead of returning it to the blood supply. Since potassium helps regulate nerve and muscle health and heart rate, low levels can cause extreme weakness, cardiac arrhythmias, paralysis, ...
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