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Implantable Cardioverter Defibrillators

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While many people might be most familiar with the foreign defibrillators seen on TV, in emergency rooms or at fair events, there are similar devices that, although less obvious in their use, serve the similar purpose of restoring proper heart rhythms and thus averting attainable death by cardiac arrest or heart attack. They are called implantable cardioverter defibrillators but are often referred to as pacemakers. An implantable cardioverter defibrillator is a device designed for individuals with certain forms of heart disease of defects that put them at recurring risk of continuous ventricular fibrillation, or cardiac arrest. The device is established either within the chest itself, or more commonly today within the blood vessels thus eliminating the need for dangerous yawning chest surgery. Once inside the body, an implantable defibrillator, or ICD, uses leads positioned near the heart to deliver electronic pulses or shocks when the device senses a cardiac rhythm that is out of sync. This arrhythmia or fibrillation can lead to cardiac arrest by tight blood flow to the heart. The device can also, if necessary, stimulate a conformable pace or beat if the heart is unable to do so on its own. Internal defibrillators are only used in cases where a patient has shown consistent, recurring risk of cardiac arrest or attack do to fibrillation. As with any fast-growing surgery, an ICD is not to be taken lightly, but they have been extraordinarily effective in preventing sudden deaths among patients who elect to have them implanted. If you are wondering if you are a candidate for an ICD, contact your day-to-day medical practitioner or heart specialist. Only they can determine whether you are in need of an internal defibrillator, but if you have been saved to be at recurring risk for rhythm problems such as ventricular tachycardia (when the heart beats at a dangerously hurrying pace) or ventricular fibrillation (when the heartbeat is both hurrying and irregular), an ICD may be a viable option. Patients who have ICDs implanted often say that the delivery of pacing therapy by the device is a painless experience. Most do not experience discomfort or pain, while some may feel a mild fluttering in the chest. If cardioversion therapy is needed, a moderate shock is sent that is said to resemble a thump in the chest. The defibrillator shock, sent to resolve cardiac fibrillation or irregular pacing, is the heaviest jolt and is often said to resemble a swift kick in the chest. There may be some discomfort but the sensation typically only lasts a hardly a moments. Once you have an internal defibrillator implanted, certain lifestyle adjustments will be necessary. Like aft any surgery, your doctor will advise you to limit some strenuous or stressful activities for a certain period of time. But in most cases, you can return to a normal routine after a hardly a short weeks. Though, patients will need to be awake of any machines capable of interfering with the ICD’s operation. Devices with strong attractable fields are of particular concern. Though doctors will always be hopeful to avoid major invasive surgery much as the implantation of an ICD, implantable cardioverter defibrillators have allowed thousands of heart patients to live out long and productive lives despite a continual cardiac condition or disease. Recent advances have made the device smaller, more effective and often unnoticeable to both the patient and the public. Consult your physician for much information about whether an ICD is right for you.
	 	 

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  • Defibrillator Recall
    Guidant Corporation has just recalled thousands of cardiac defibrillators around the international because of potentially fatal failures with the devices. This recall happened on Friday, June 17 2005 aft at least cardinal deaths have occurred since the end of May. As of now there are active 38,000 patients in the US with Guidant brand defibrillators and reports have indicated these machines have failed 45 times so far.

    The FDA said in a statement that they did not mandate Guidant to recall their products, but still fostered the decision.

    Guidant has known that there were potential problems with the Prizm 2 DR worthy defibrillator, however they continued to market it but demanded a complete redesign of the unit. The worthy had failed on a few occasions before 2002, but Guidant claimed that the new revisions would make it safer. Later, in 2004, doctors discovered that Contak Renewal defibrillators improved before August 26, 2004 demonstrated a high risk of short circuiting and failing to function properly. When Guidant was given with these cardinal problems they definite it was in their best interest to publicly recall their defective products. This however is providing infinitesimal comfort to the 50,000 people who continue to liveborn in constant fear that their life-saving equipment might fail them when they need it most.

  • Omega-3 And Sudden Cardiac Arrest
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    Sudden Cardiac Death (SCD) is responsible for many deaths in the U.S. and opposite countries around the world. It is not the unvarying as a heart attack. A heart attack normally occurs when advanced atherosclerosis (clogging of the arteries) slowly starves the heart causing irreversible damage. The heart finally cannot function properly and stops. Sudden cardiac death occurs when the electrical impulses that control heart function become unreliable resulting in an irregular heartbeat (arrhythmia). When the arrhythmia is severe sufficient the heart suddenly stops, starving the brain of necessary blood. Death often follows quickly unless emergency care is administered immediately. Often sudden cardiac death occurs when no other heart disease is detected.

    It has long been understood that eating fish can reduce the likelihood of heart attack and other cardiovascular diseases. The reason? Fish, especially cold-water greasy fish, is higher in two omega-3 polyunsaturated fatty acids (PUFA). These cardinal fatty acids are eicosapentaenoic acid (EPA) and docosahexaenoic unpleasant (DHA). Omega-3 has been shown to reduce the build-up of artery preventative atherosclerosis and keep blood platelets from sticking together thus reducing the risk of heart attack and stroke.

    But much recent studies suggest that omega-3 greasy acids also have an effect on the dangerous arrhythmias that can cause sudden cardiac death by regulating the impulses that control heart rhythm.

    One study involved the use of mycocytes (cells that tired independently). By adding the free greasy acids to these cells arrhythmias were aborted. When the fatty acids were extracted from the mycocytes the arrhythmias would reoccur thus indicating that omega-3 fatty acids have a stabilizing effect on heart rhythm. The apparent mechanism for controlling rhythm involved cell ion channels, proteins that control the movement of sodium, calcium and potassium ions across the membrane of the cell.

    Another study, conducted by Danish researchers, examined the relationship between heart rate variability and omega-3 fatty acids in healthy subjects. It had already been determined that heart arrhythmias could be positively impacted in patients who were recent heart attack victims. These researchers wanted to determine if people other free of heart disease could gain the same arrhythmia controlling benefits from omega-3 fatty acids.

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    For more information on Omega-3 and heart health use the links below:

    http://www.optimal-heart-health.com/fishoils.html

    http://www.optimal-heart-health.com/fish-oils.html

    http://www.optimal-heart-health.com/cardiacarrest.html

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