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Defibrillators save lives
Cardiac Science's proprietary RHYTHMx™ Software and STAR® Biphasic Waveform provide effective technology solutions to treat sudden cardiac arrest.
RHYTHMx Technology is a patented software detection algorithm to accurately and instantly detect abnormal heart rhythms, determine if they are life threatening and when appropriate, facilitate delivery of a live-saving defibrillation shock.
The STAR Biphasic Waveform Technology was developed with each individual's needs in mind, providing customised defibrillation energy for the patient based on the patient's impedance. The patented RescueReady® technology ensures your AED can be counted on when you need it most - during a rescue.
AED Defib Technology
- RescueReady
- RHYTHMx
- STAR Biphasic Waveform
RescueReady Technology®
Ensuring reliable AED Defibrillator operation
One of the most important features of a Cardiac Science AED Defib is its high degree of reliability. Performing the most comprehensive self-testing in the industry ensures Cardiac Science AEDs are "RescueReady" when you need it. When the green RescueReady indicator is lit, Cardiac Science AEDs can be counted on to perform during a rescue.
- Proprietary RescueReady Technology tests battery, system components, and verifies that the pre-connected disposable electrodes can properly deliver a shock.
- Daily, weekly, monthly testing of battery, electronics, and pre-connected electrodes occurs automatically.
- Once a month, the AED performs an automatic full charge test of the high voltage circuitry, to confirm the AED's ability to deliver a shock when needed.
- RescueReady status indicator on the AED handle changes from green/red and emits an audible alert if service is required. (Powerheart AED G3 only)
- Pre-connected electrodes are always stored inside the device, eliminating confusion and possible errors during a rescue.
- Patented RescueReady technology confirms the electrodes are in the AED and ready for use.
RHYTHMx™ Technology
Making hard decisions fast
The RHYTHMx technology offers the most advanced, smartest software analysis algorithm in the industry. The RHYTHMx technology is the intelligence behind the Cardiac Science's Powerheart hospital and public access defibrillation products, and is designed to continuously monitor, detect, and advise defibrillation therapy to treat cardiac arrhythmias.
- Specificity and Sensitivity - clinical results with the RHYTHMx technology demonstrated 100% sensitivity (correct identification of shockable rhythms) and 99.4% specificity (correct identification of non-shockable rhythms).
- RHYTHMx technology differentiates between shockable life-threatening cardiac rhythms such as ventricular arrhythmias (VT/VF) and supraventricular tachyarrhythmias (SVT), plus distinguishes non-shockable cardiac arrhythmia events.
- Non-committed device - If the RHYTHMx technology detects a shockable rhythm and charges, but recognises a rhythm change, the Cardiac Science device automatically disarms, informs the user that that the rhythm has changed, and reanalyses the patient's heart rhythm.
- Post-resuscitation monitoring - RHYTHMx technology continues to monitor the patient's heart rhythm post resuscitation, to instantly detect the reoccurrence of a life-threatening arrhythmia. If cardiac arrest recurs, the Cardiac Science device will charge automatically and advise the operator to deliver a defibrillation shock.
- Synchronised shock - RHYTHMx technology automatically synchronises shock delivery whenever possible to the patient's electrocardiogram R-wave. If unable to synchronize it will deliver an unsynchronised shock. Synchronisation of a defibrillation shock has been shown to be more effective in converting patients out of life threatening arrhythmias.
- RHYTHMx Technology that allows a medical director or physician to pre-program detection rates for shockable cardiac arrhythmias such as VF, VT and SVT.
Analysis algorithm white paper
Download the white paper for further information >
STAR® Biphasic Waveform Technology
Saving minutes saves lives
There are a number of ways an AED Defib can deliver a defibrillation shock. Some AEDs provide the same level of energy each time a shock is delivered. Other AEDs deliver higher levels of energy with each shock, but still administer the same energy level for every patient. The Cardiac Science methodology is that no two patients are alike. That's why Cardiac Science has introduced the proprietary STAR Biphasic technology, providing escalating biphasic energy and customised, variable energy.
- STAR Biphasic technology measures a patient's impedance (the body's opposition to the flow of electrical current), adjusts defibrillation parameters, and delivers an energy level customised to the needs of that patient.
- STAR Biphasic escalates energy over a range of impedances. This proven method of escalating energy is consistent with American Heart Association guidelines and is well established in the defibrillation industry.
- STAR Biphasic Waveform has the highest reported effectiveness in hospital and pre-hospital data.
- In clinical trials, STAR Biphasic was 100% effective at defibrillating patients in ventricular fibrillation-the most common arrythmia of sudden cardiac arrest on the first shock.
- Pre-hospital data for STAR Biphasic has shown defibrillation success rates of 89 percent with an average number of 2.3 shocks per patient.
- If using MDLink Software with the Powerheart AED G3 Defib, a medical director can customise parameters to follow a desired defibrillation rescue protocol. Adjustable parameters include 5 defibrillation energy protocols such as ultra low, standard and non-escalating variable energy options.
For more information on the STAR Biphasic Technology
STAR Biphasic Waveform White Paper >
All information provided by Cardiac Science - 2011-06-01
This is what the
British Heart Foundation
says about Defibrillators
A defibrillator is a life-saving machine that gives the heart an electric shock in some cases of cardiac arrest. This is called ‘defibrillation' and can save lives.
Cardiac arrest is when the heart stops pumping blood around the body. When someone has a cardiac arrest, defibrillation needs to be prompt.
For every minute that passes chances of survival decrease by 14%.
Research shows that applying a controlled shock within five minutes of collapse provides the best possible chances of survival.
It means defibrillators, also known as automated external defibrillators (AEDs), need to be placed strategically – areas where there is a high incidence of cardiac arrest and where it is difficult for an ambulance to get quickly.
Rural areas, communities with poor road networks or traffic congestion and where large crowds gather are all places where we need defibrillators the most.
Young life-savers
The British Heart Foundation Heartstart UK programmes are run in schools across the UK.
Raising awareness
The British Heart Foundation urge people to apply for a defibrillator and increase the number of devices across the country so that more lives can be saved.
More than 6,000 defibrillators have been placed in the community since we started donating them in 1996. We know of at least 230 lives that have been saved through our investment.
The British Heart Foundation offer cardiac equipment grants to help improve the nations heart health.
How do I use one properly?
It’s very easy to use an AED. The rescuer turns the machine on which then gives ‘voice prompts’, telling the rescuer what to do. The rescuer will be asked to puts the pads in position on the person’s chest. These pads detect electrical activity in the heart and will be able to tell if a shock is needed.
Anyone can use an AED, but it is preferable that people receive training first. It would be better if more people were trained in CPR, which buys time before defibrillation.
Should a defibrillator be kept locked away so it doesn't get damaged or stolen?
The British Heart Foundation have a policy that the AEDs that we fund should not be put in locked or code-restricted cabinets.
Is it a good idea for GP surgeries to be equipped with defibrillators?
Research shows that GP surgeries equipped with defibrillators can improve survival by up to 60 per cent if the patient is treated immediately or soon after entering cardiac arrest.
The British Heart Foundation >
AED Defib Technology


