How well do you know high-quality CPR? Practice regularly and take a quiz on high-quality CPR to check your knowledge. While patients need ventilation, over-ventilating or hyperventilating the patient can be detrimental to their outcome too much ventilation can increase pressure in the chest cavity and may reduce the output of the heart. Ventilatory rate is the rate at which rescuers are delivering ventilations often via a bag-valve mask. This finding has led some EMS systems to avoid the use of advanced airways with a preference placed on an OPA or NPA if the providers can maintain a patent airway.Ĭontinue compressions as another rescuer places an AED or obtains IV or IO access. Minimizing interruptions during CPR is one of the most important ways to ensure high quality resuscitation. After CPR is restarted, it takes time to build up cardiac output again. Each time CPR is stopped the output of the heart falls off dramatically. Compression fractionĬompression fraction is the percent of time during the cardiac arrest that CPR is actually being performed. By allowing full recoil, rescuers allow the heart to fill with blood completely which improves cardiac output.Ĭaregivers should never rest their weight on the patient’s chest during CPR. It is equally important to allow the chest to fully recoil following each compression. The preferred compression depth is two inches for most adults. Compression depthĬompression depth is the measurement of how deep the sternum is pushed down during CPR. If compressions are too fast, the heart does not have enough time to adequately fill so cardiac output drops off. If compressions are too slow, blood is not being circulated effectively around the body. Now, however, it is becoming clear that a rate of 100-120 compressions per minute is ideal. The problems inherent in the above devices show the difficulty of solving the problem of measuring chest compression depth using only an accelerometer. The idea used to be that faster was better. AHA: 911 dispatchers should instruct callers on CPRĬompression rate is the measurement of how fast CPR is being performed.
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