Atrial fibrillation is one of the most common cardiac arrhythmias. Ablation is the removal or melting away of unwanted structure or tissue. Ablation of atrial fibrillation can be accomplished with different techniques. The most established approach is via radiofrequency ablation around the pulmonary veins, which are the veins that bring oxygenated blood from the lungs back to the left side of the heart.
Heart rhythm disturbances that originate in the upper heart chambers (atria) are referred to as supraventricular tachycardias or SVT, the most common of which originates in the area of the AV node (the only electrical connection between the upper and lower chambers) Of the heart rhythm disturbances that originate in the lower heart chambers (ventricles), the most common is ventricular tachycardia, and it is generally life-threatening.
Ablation therapy is a minimally invasive procedure that uses radiofrequency (RF) electrical energy to eliminate the heart cells that cause arrhythmia. It is often a permanent cure.
A pacemaker is a battery-operated device that helps maintain a normal heart rhythm. It sends electrical signals to the heart to stimulate contracting or pumping of the heart muscle. It is designed specifically for patients who have irregular or very slow heart rates and symptoms of fainting or fatigue.
The rate is set by the doctor. The pacemaker generator is placed under the skin on the chest wall below the collarbone. It contains a battery and wires (leads), which are positioned inside the heart and transmit the signal from the battery to the heart, thus causing the contracting.
A bi-ventricular AICD is a special kind of pacemaker used in cardiac resynchronization therapy (CRT), or bi-ventricular pacing. This computerized device is implanted in the chest wall of heart failure patients whose left and right heart chambers do not beat at the same time.
Through leads placed on or in the heart, a bi-ventricular AICD can detect a cardiac disturbance such as the onset of heart failure, tachycardia, and/or fibrillation and generate electrical impulses to resynchronize the contractions of the heart’s ventricles and help the heart pump blood throughout the body more efficiently.
This device has all the features normally included in pacemakers and defibrillators, but its primary purpose is to assist in the management of heart failure.
An implantable cardioverter defibrillator system, or implantable cardiac device (ICD), is a small electronic device that monitors heart rhythm and delivers a shock to correct a potentially fatal heart rhythm if it should occur.
The generator is surgically implanted beneath the skin and muscle below the collarbone. Wire electrodes attach the pulse generator to the heart. Some of the wires are inserted through veins into the inside of the heart and can sense the heartbeat. Other wires may be attached directly to the heart. These wires are used to deliver the shock, if necessary, which converts the heart back to its normal rhythm.
An implantable loop recorder is a small device that is implanted under the skin to help identify the causes of fainting. Syncope (or fainting) is a temporary loss of consciousness. Certain heart disorders can cause fainting, such as abnormal heartbeats called arrhythmias.
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