Heart-Help's Arrhythmia Pages

If you or a family member
are suffering from palpitations or fainting (synscope)
you should be seen by a physician.


Index for This Page
(Click on Article of Interest:)

Heart Block
Long QT Syndrome
Symptoms of Arrhythmias
How Diagnosis of Arrhythmias is Made
Treatment and/or Medication for Arrhythmias

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Heart Block
Heart block occurs when the electrical signal is sent properly, but the signal is not sent through the lower electrical pathways as quickly as it should be. This is often caused by aging or swelling or scarring of the heart from coronary artery disease.

Long QT Syndrome
Long QT may be a congenital (birth) disorder (in approximately 85% of the time) or may be acquired through certeain drugs--toxins or electrolyte (calcium/magnesium/potassium) disturbances. This syndrome can cause synscope (fainting) cardiac arrest and can be brought on by emotional or physical distress.

Symptoms of Arrhythmias
You may or may not have symptoms and they depend upon the health of your heart and the type of arrhythmia. Symptoms of bradycardia (slow beating heart) are: feeling tired, short of breath, dizzy or faint. Symptoms of tachycardia (fast beating heart) are: your heartbeat feels like a strong pulse in your neck, or a fluttering, racing beat in your chest. You may feel chest discomfort, weak, short of breat, faint, sweaty and dizzy.

Diagnosis of Arrhythmias
Arrhythmias can be diagnosed by the following:

Treatment and/or Medicines for Arrhythmias
Anti-arrhythmic medicines (see below), digitalis, beta blockers, and calcium channel blockers are sometimes the first approach.

Following from the Gale Encyclopedia re antiarrhythmia drugs:

Antiarrhythmic drugs are available only with a physician's prescription and are sold in capsule (regular and extended release), tablet (regular and extended-release), and injectable forms. Commonly used antiarrhythmic drugs are disopyramide (Norpace, Norpace CR), procainamide (Procan SR, Pronestyl, Pronestyl-SR), and quinidine (Cardioquin, Duraquin, Quinidex, and other brands). Do not confuse quinidine with quinine, which is a related medicine with different uses, such as relieving leg cramps. Never take larger or more frequent doses. Do not stop taking this medicine without checking with the physician who prescribed it. Stopping it suddenly could lead to a serious change in heart function.

Antiarrhythmic drugs work best when they are at constant levels in the blood. To help keep levels constant, take the medicine in doses spaced evenly through the day and night. Do not miss any doses. If taking medicine at night interferes with sleep, or if it is difficult to remember to take the medicine during the day, check with a health care professional for suggestions.

Precautions Persons who take these drugs should see their physician regularly. The physician will check to make sure the medicine is working as it should and will note any unwanted side effects. Some people feel dizzy, lightheaded, or faint when using these drugs. This medicine may cause blurred vision or other vision problems. Because of these possible problems, anyone who takes these drugs should not drive, use machines or do anything else that might be dangerous until they have found out how the drugs affect them. If the medicine does cause vision problems, wait until vision is clear before driving or engaging in other activities that require normal vision. Antiarrhythmic drugs make some people feel lightheaded, dizzy, or faint when they get up after sitting or lying down. To lessen the problem, get up gradually and hold onto something for support if possible. (from the Gale Encyclopedia).

Amiodarone and dofetilide (TIKOSYN) are also used for arrhythmias.

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IMPORTANT LINK: See THE MERCK MANUAL for more arrhythmia information and anti-arrhythmia drugs.

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Other treatments for arrhythmias include the following:

Sometimes, no treatment is needed and people with an arrhythmia lead normal active lifestyles. Certain lifestyle habits such as avoiding caffeine and over-the-counter pain medicines, or avoiding alcohol are enough to stop the arrhythmia.

(This page was written with the help of The Merck Manual.)

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Last Modified on February 08, 2006

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Whatever you read here, or at any website
should not be misconstrued as medical advice.
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