![]() Trials have reported up to a 25% increase in survival to hospital discharge when audio feedback devices are available to give depth, recoil, and rate feedback. As providers perform the skill, these devices ensure that they’re giving the correct compression technique. It’s a good idea to use audio-visual feedback devices to provide feedback on the quality of CPR. The ideal percentage is at least 80% or 90%. So if the total resuscitation time is 140 seconds and 115 seconds are spent doing compressions, the chest compression fraction looks like 115 / 140 = 0.82. Chest compression fraction is the amount of time that chest compressions are being actively given divided by the total amount of time for the resuscitation. ![]() The best way to measure this is to use chest compression fraction. Minimize delays in chest compressions.Hyperventilation increases the pressure in the chest too much and reduces blood flow back to the heart. Give just enough ventilation to see the chest rise, which is about 500 to 600 mL in the average adult patient. The heart needs to have full opportunity to refill with blood before you compress again. You don’t need to remove your hands, but make sure your hands aren’t putting any pressure on the chest between compressions. Choose your preferred rhythm-setter: the classic Staying Alive, the grim Another One Bites the Dust or The Imperial March from Star Wars. Hopefully you know these, but we’re going to put them out there anyway: Many factors play an important role in resuscitation – like team dynamics, pharmaceutical interventions, and electrical interventions – but high-quality CPR has the greatest impact on survival to hospital discharge. ![]()
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