HEART & DEFIBRILLATOR

What’s importance of early defibrillation?

Defibrillation is a part of basic life support; it is a life saving action to enable normal cardiac operation, ending irregular vibrations on myocardium by giving electric current to heart through defibrillator. Defibrillation applied for 20-30 seconds in VF or VT without pulse, converts almost 100% of them to sinus rhythm. Each one-minute delay reduces chance of success by 10%. In case of a 10-minute delay, chance to survive is close to 0. With every minute from development of cardiac arrest with VF or VT without pulse, mortality increases by 7 / 10%. In case of later start of defibrillation, survival chance of patient decreases; and only one among 250 patients can be saved in average in the event of starting cardiopulmonary resuscitation and defibrillation after first 10 minutes.

What’s the difference between heart attack and sudden cardiac arrest?

Basically, heart attack occurs due to decease and/or permanent damage of a part of cardiac muscle due to insufficient blood flow through this area. Sudden cardiac arrest means that heart beat turns from its normal cardiac rhythm into an abnormal rhythm.

In Worldwide, loss of life due to sudden cardiac arrest is higher than total number of losses due to diseases such as breast cancer, AIDS and lung cancer.

Who carries risk of sudden cardiac arrest and what are the reasons?

People from any age, gender or race carry risk of sudden cardiac arrest; however some of them have higher risk than others.

·         40+ years old males
·         Menopausal females
·         Smokers
·         Diabetics
·         Lack of exercise
·         Stress
·         High cholesterol
·         Cardiac diseases

Which one is the most common treatment for sudden cardiac arrest?

Simply the only proved cure for victims of ventricular fibrillation and ventricular tachycardia at the moment of sudden cardiac arrest is “defibrillation”. Defibrillation device is required for defibrillation application.

What is sudden cardiac arrest?

Sudden cardiac arrest occurs when the heart stops beating suddenly for any reason, with or without warning. One reason the heart might stop is the failure of the electrical system in the heart to conduct impulses along the correct path. Random impulses firing all over the heart will cause it to quiver uselessly, not moving blood around the body or producing a pulse.

When the AED shocks the heart it causes the heart to stop momentarily. This pause gives the heart time to reset and allows special cells in the heart to regain control and fire rhythmically, pushing blood.

One thing to remember about AED’s: they only work on two specific heart arrhythmias. Only those two issues will benefit from an AED, and those are what the machine is programmed to recognize. It is perfectly normal for it not to recommend a shock and it will not save every patient in cardiac arrest. Indeed, AED’s often don’t help the patients they shock.

What happens in a cardiac arrest?

You might not think of yourself as having lots of muscles, but there’s one super-powerful muscle in your body you absolutely depend on: the tireless blood pump in your heart. If your heart stops beating properly and blood stops flowing, your brain starts to lose its oxygen supply and you can die within five minutes. That’s why people who suffer cardiac arrest (when their heart stops or goes into a dangerously abnormal rhythm) need emergency medical treatment CPR (cardiopulmonary resuscitation) can help maintain the flow of oxygen to the brain, but getting the heart restarted and working normally often requires defibrillation with an electric shock.

What is Ventricular fibrillation?


Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients.[1] While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (“flatline”). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.

Ventricular fibrillation is an abnormally irregular heart rhythm caused by rapid, uncoordinated fluttering contractions of the ventricles – the lower chambers of the heart. These fluttering replace normal contractions. Ventricular fibrillation puts the heartbeat and pulse beat out of synch.

The pumping chambers in the ventricles quiver uselessly, instead of pumping blood, resulting in a serious drop in blood pressure, and the cutting off of oxygen-rich blood to body organs.

Ventricular fibrillation is a life-threatening medical emergency. It is most commonly linked to heart attacks or scarring of the heart muscle from previous heart attack. A patient with ventricular fibrillation generally collapses within seconds – and it won’t be long before his/her breathing or pulse stops.

What is the difference between ventricular fibrillation and atrial fibrillation? The human heart has two upper chambers and two lower chambers. The upper chambers are called the left atrium and the right atrium – the plural of atrium is atria. The two lower chambers are the left ventricle and the right ventricle. When the two upper chambers – the atria – contract at an excessively high rate, and in an irregular way, the patient has atrial fibrillation. When the two lower chambers beat irregularly and flutter, the patient has ventricular fibrillation.

Put simply – atrial fibrillation refers to the two upper heart chambers while ventricular fibrillation refers to the two lower heart chambers; in either case there abnormally irregular rhythm.

Ventricular fibrillation is more serious than atrial fibrillation. Ventricular fibrillation frequently results in loss of consciousness and death, because ventricular arrhythmias are more likely to interrupt the pumping of blood, or undermine the heart’s ability to supply the body with oxygen-rich blood. As a main life point brand  defibrillator & Automatic external defibrillator suppliers in Dubai, Abu Dhabi, Sharjah and all cities in UAE, contact us now and get the best price for your defibrillator system today from our medical equipment supplier company in dubai UAE. 

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