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    POLAROID LAND CAMERA
    November 28, 1948 - Boston, U.S.A.

    The Polaroid Land Camera first went on sale, at a Boston department store. The 40 series, model 95 roll film camera went on sale for $89.75. This first model was sold through 1953, and was the first commercially successful self-deleveloping camera system. A sepia-coloured photograph took about one minute to produce. Edwin H. Land had previously demonstrated his invention of instant photography at a meeting of the Optical Society of America on 2 Feb 1947. His first commercial success came in 1939 with his invention of Polaroid filters for lenses in products such as ski goggles, sunglasses and slip-on sunglasses for optical glasses.

    ENRON COLLAPSES
    November 28, 2001 - U.S.A.

    Enron Corp., once the world's largest energy trader employing over 20,000 employees share price has now dropped below one dollar from a high of $90.00 per share following would-be rescuer Dynegy Inc. backing out of an $8.4 billion deal to take Enron over. Speculation is now on when not if Enron will file bankruptcy. On 2nd December Enron did file bankruptcy and later as details became available it was shown that a number of top executive knew of the imminent collapse and dumped their shares at high prices while still telling investors to buy the shares as a great investment, consequently a number of those former executives were indicted on securities fraud and related charges.

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How an Automatic External Defibrillator :

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ARTICLE INFORMATION :

This article discusses the importance of external defibrillation in cardiac arrest situations. It also looks at the dangers of fibrillation and the role of CPR despite being limited in saving the lives of fibrillation victims.

ARTICLE CONTENT :

In the past couple of years manufacturers have come up with some of the most easy to use automatic external defibrillators. The AEDs as they are called are now a lot smarter, do not require experience and have a manual override setting for experienced doctors and paramedics. These devices have increased the chances of survival for many people suffering from heart conditions. But before people use this device it is important that they understand exactly how it works and when to use it.

The dangers of ventricular fibrillation

Ventricular fibrillation is a medical term of irregular heart rhythm. When the heart rhythm becomes abnormal or irregular it cuts off supply of blood to all the vital organs including the brain. So, any ventricles that are damaged because of cardiac arrest if they are not treated on time may result in eventual death. This is because these are the main blood carrying vessels responsible to directing blood from the heart. From the time a person suffers from ventricular fibrillation he only has 10 minutes to live. The first five minutes are the most important and so defibrillation delivered with CPR within this time will increase their chances of surviving by 80%.

Ventricular fibrillation treatment

The most effective way of treating the conditions is to reset the heart by directing a high intensity shock to it. This method is often referred to as being defibrillation. That said there are various types of defibrillation and so the rate of survival will mainly depend on what method is used.

Experienced doctors in hospitals or paramedics will use a manual defibrillation unit with success because they know exactly what intensity shock to use. They can also dial up the intensity based on what feedback they get from the heart. Cardiac arrest victims have a very high survival chance in the hospital.
Cardiac arrest victims often have a lower chance of survival when outside the hospital especially if they do not get defibrillation within five minutes. A CPR specialist may be able to revive the person but with a low degree of success.
Automatic external defibrillation can save lives outside a hospital but only if the device is used on time. The person in charge of running through the steps will need to keep calm and follow through the voice prompts by the machine.

How important is cardiopulmonary resuscitation

CPR has been known to save lives mainly by providing a degree of relief via artificial circulation. CPR does an excellent job of delivering some oxygen to the body in addition to jolts to the heart which in mild fibrillation is able to revive people. However, CPR in the case of fibrillation is best used in conjunction with an AED or a manual defibrillator. After each shock is delivered the person should perform CPR and check the heart for its rhythm. Doing this correctly can save lives outside of a hospital but people who do not know CPR may be able to save lives only if an AED is available.


Source : EzineArticles

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  • DefibTech
    is one of the leading suppliers of high quality automatic external defibrillators in Australia.

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