Cardiac Defibrillator

Shock Is Delivered Within A Few Seconds

Various Forms and Uses of a Defibrillator

In the field of medicine, a defibrillator plays a very essential role. When heartbeat becomes dangerously fast and chaotic due to ventricular fibrillation or ventricular tachycardia, defibrillators deliver an electrical shock to the heart to restore a normal heart rhythm. Using it helps prevent cardiac arrest and cardiac death from happening. Patients with cardiomyopathy, arrhythmogenic right ventricular dysplasia, QT syndrome or survivors of sudden cardiac death require defibrillation.

Defibrillation is the best treatment for life-threatening cardiac arrhythmias ventricular fibrillation and pulseless ventricular tachycardia. It works by sending a therapeutic jolt of electrical energy to the affected heart through a device called a defibrillator. This treatment depolarizes a critical mass of the heart muscle, stops the arrhythmia, and reestablishes normal sinus rhythm. It restores normal heart rhythms before the affected heart suffers from sudden cardiac arrest.

Medtronic gets defibrillator lawsuit dismissed - BusinessWeekMedtronic gets defibrillator lawsuit dismissed - BusinessWeek
Medtronic Inc. said Tuesday a U.S. District Court dismissed with prejudice lawsuits over lead wires to an implantable defibrillator on the grounds that Food and Drug Administration approval protects the makers from lawsuits. In October of 2007 ...

There are different forms and sizes of defibrillators. Those types you see in a hospital are called manual defibrillators or defibrillator paddles or, and they can only be operated by healthcare professionals. On the other hand, the AED can be used by lay people with only less training, which is handy for emergency purposes where no healthcare professional is around. ICDs or implantable cardio-verter defibrillators are implantable in the patient’s chest.

There’re two types of manual defibrillators: external and internal. External units work together with electrocardiogram readers. Through the device, the clinician can diagnose a cardiac condition, decide on the right amount of charge in joules, and send the shock through pads or paddles. However, such process necessitates thorough medical knowledge and experience. Because of that, you can only see these units in hospitals and some ambulances, generally.

Manual internal defibrillators are similar to manual external defibrillators. Only, internal leads which are in direct contact to the heart are used to deliver the shocks. The leads function both ways: either to detect an abnormal rhythm or to deliver the actual shock. Usually, you can find such units in operating rooms, where the chest is likely to be open, or can be easily opened by a surgeon.

Automated external defibrillators are available for emergency purposes. They are preprogrammed units using computer technology that are designed to analyze the heart rhythm and advise whether a shock is required. Lay persons can operate AEDs with minimal training. They are either PADs or public access defibrillators and can be found in corporate or government offices, hotels, airports and shopping centers. Or, they could be held by skilled personnel who will attend incidents.

Implantable cardio-verter defibrillators or ICDs are another type. They are implanted in the patient’s chest, and could function similarly to pacemaking. ICDs continuously observe and monitor the patient’s heart rhythm, and if necessary, also correct an irregular heart rhythm (arrhythmia) depending on the device’s programming. A pacemaker can also be used in conjunction with an ICD to treat complex arrhythmias.

Those are the different types and uses of a defibrillator. But although they are different in shape and size, all of them have a specific goal. That is to convert an unhealthy cardiac rhythm into a more normal rhythm. And whether, it is used by medical professionals or lay men, external or internal, automatic or manual, it helps lessen incidences of cardiac arrest or cardiac death.

Medtronic gets defibrillator lawsuit dismissed - BusinessWeekMedtronic gets defibrillator lawsuit dismissed - BusinessWeek
Medtronic Inc. said Tuesday a U.S. District Court dismissed with prejudice lawsuits over lead wires to an implantable defibrillator on the grounds that Food and Drug Administration approval protects the makers from lawsuits. In October of 2007 ...

Implanted Defibrillators Benefit Older People - National Womens Health Information CenterImplanted Defibrillators Benefit Older People - National Womens Health Information Center
TUESDAY, Jan. 6 (HealthDay News) -- Implanted cardioverter defibrillators (ICDs), which deliver an electric shock to prevent sudden death when a heart stops beating properly, improve survival in people 75 and older, new research suggests. The finding ...