Types of defibrillator

An essential piece of equipment is the Defibrillator or AED,which is used applied externally to the body to effect a response. These are very safe pieces of equipment to use and normally you cannot make a mistake using one.

"The automated external defibrillator (AED) has been described as the single most important development in the treatment of Sudden Cardiac Arrest (SCA). These devices are now widely available and increasingly used by people, often with little or no training, to re-start the heart of a victim of SCA. Under ideal circumstances, when used very soon after collapse (within two or three minutes), many can survive."

Resuscitation Council - December 2013

It is important to choose the equipment that is suitable for the tasks being asked of it. Different defibrillators have different specifications and features, some of which might not be required, or others that, in practice, offer no tangible benefits for the untrained lay user. All makes of defibrillator will deliver a shock in an emergency if required. Generally, however the correct make of defibrillator to choose is the one that keeps the rescue as simple as possible for untrained members of the public; e.g Gives clear audio and visual instructions; is easy to use and comes with long term support; is cost effective to buy and run; and do not have extra features that offer either negligible real benefit or otherwise might be misunderstood or misused in the stressful situation by untrained people.  Ideally choose one specifically designed for use by community rescuers, which gives CPR protocols for bystander CPR. Cardiac arrest in children under 8 years old occurs infrequently, so for a village community, the chance of cardiac arrest in a child under 8 in a primary school is about once in every 60 years or so. In defibrillator terms, a 12 year old is not a child and is treated as an adult, and therefore paediatric electrodes or switches are not normally required, and may be disadvantageous in some circumstances. The Community Heartbeat Trust classifies defibrillators as to there suitability for community/untrained user situations, and will advise objectively on the best solution.

Make

There are a number of factors, often more important than cost, to consider when looking at defibrillators. Whilst all AEDS deliver a shock, it is worth asking the following;

  • What is the device pedigree? Is it a well established model with a proven and highly commended manufacturer history?
  • The age of the technology; is the software and model still supported by the manufacturer? Older AEDs may not have the current operating software within current guidelines.
  • Who uses it? Does the model require further input from the user than just the press of a button? Is it commonly used by non-trained users? Community Heartbeat assesses the suitability of defibrillators in terms of ease of use and ongoing costings. 
  • Where is it made? Does it have FDA approval i.e stringent testing by an established body? For instance, is it made in Asia? It is worth considering the age of a child in defibrillator terms is 1 to under 8 or under 25kg however many western children will weigh a lot more than their Asian counter-parts. 

Support

Is the manufacturer's representative UK based, or have a UK support office such as those shown below.

 

                  

Battery

Most defibrillators will have disposable lithium batteries that last between 2-5 years depending on model. Be aware that you should only use manufacturer approved and made components. It is possible to buy replica consumables for certain models in some cases, however these can cause issues with the defibrillator and stop it from working correctly. We also do not advise that you use a unit that requires general consumer batteries to operate as if these were to fail then there could be the potential for liability.

                                                       

Ease of use

All defibrillators will deliver a shock in working order. It is worth considering in this instance though what input the machine may need from the person on scene. For community use, we generally advise on defibrillators that require the least input from the user and give clear and concise instructions. There may be some very cheap models of defibrillator out on the market but these may not be suitable for a community of untrained people. They may have extra functions that would be suitable for a CFR or trained personnel but may hinder an untrained user.

Mode

Modern AEDs are either semi or fully automatic, and depending on your ambulance service region they may have a preference on what you have as a community, however CHT are aware of this and will advise appropriately.

Fully Automatic machines will administer a shock without a user's input, a semi auto machine requires that the shock button be pressed when the defibrillator prompts. 

Always remember that you cannot hurt someone with a defibrillator as the unit will only shock a patient with a detectable problem in their heart rhythm.

Size and robustness 

Most AEDs will be very light and small, and undergo drop testing to military grade specification. It is worth noting the IP rating on some models of defibrillator, as whilst some may be suitable for indoor use, others may not be sufficiently protected in heavy weather outdoors. 

Price

Community Heartbeat are aware that the cost of installing a defibrillator can be high and are able to advise appropriately depending on budget. It is important to consider regarding pricing that some defibrillators will appear cheaper but actually accrue costs over a 10 year period that make them more expensive than other models. Also, it is worth considering the age of the unit, its technology and whether it is still supported by the manufacturer as these may be other reasons at to why a defibrillator appears cheap. 

After care

Is there FULL sales support and post installation help available? Is the supplier going to help with registering the unit with the Ambulance Service and be on hand to answer questions about the unit post installation?

Warranty

What is the warranty on ALL parts of the defibrillator? Some only have a 90 day warranty on batteries, or will not warrant the equipment working unless manufacturer supplied batteries and electrodes are used, or where "cable converters" are being used.

 

 

 

 

 

 

 

 

 

Disclaimer

Please make sure you have read and understood this disclaimer - It will be assumed that you have read prior to CHT receiving any request. CHT are not responsible for your fund raising, nor your cPAD operations, but may assist in both. CHTs only aim is to support the installation of a cPAD scheme in the most cost effective way possible adhering to Best Practice, and help save lives in your community. This website, and any downloaded information, is for information only on how to go about obtaining and installing a cPAD, and other relevant information. All copyrights and trademarks are recognised. All support for the cPAD will be undertaken by the village committee responsible and via standard manufacturers warranties. Any training organisation will only be responsible for the initial awareness training and not for the functioning or maintenance of the AED. Please do not send any monies to CHT until you have registered your scheme with us, and have agreement from the local ambulance service for the establishment of a cPAD scheme. All schemes must be registered with the local ambulance service (CHT will also undertake this or you can do via this site, but this does not remove responsibility for you to notify the local ambulance service of your AED location). 999/112 (ambulance) must always be called prior to using a cPAD equipment. VAT may be applicable if your organisation is not an eligible body as defined by HMRC. All current or historical claims for VAT will be met by the local community. All schemes will be asked to sign an agreement taking responsibility for their own fund raising and donations to CHT, and then the operation and maintenance of the cPAD equipment. All CHT provided schemes will need to manage their maintenance through the WebNoS online system as a condition of CHT support. It is your responsibility to maintain the equipment in working order and to make sure the local ambulance service is aware of this. WebNoS makes this possible and also acts as an audit trail for management of the equipment. Sites provided by CHT and not using WebNoS may be disengaged from the ambulance service CAD systems. Any web site showing defibrillator locations is for information only, and should not be used in preference to dialling 999. CHT works in close cooperation with the UK ambulance services. Always dial 999 in an emergency

Registered Charity Number - 1132824