When someone experiences cardiac arrest in New York, high-quality CPR can help maintain blood flow to the heart and brain until further treatment is available. Performing each part of CPR correctly helps keep resuscitation effective.
This guide explains the 5 components of high-quality CPR, common mistakes that can reduce CPR quality, and how CPR recommendations differ for adults, children, and infants in New York.
What Is High-Quality CPR?
High-quality CPR involves performing chest compressions and ventilations correctly to help maintain blood flow and oxygen delivery to the brain and other vital organs during cardiac arrest. The 2025 American Heart Association Guidelines emphasize using proper CPR techniques consistently to provide effective resuscitation.
Effective CPR depends on performing each part of the technique correctly throughout the resuscitation. Problems with compression technique, unnecessary pauses, or ventilation can reduce the effectiveness of CPR and limit blood flow.
What Are the 5 Components of High-Quality CPR?
High-quality CPR depends on five key elements that work together to support effective chest compressions and ventilation. These include maintaining the correct compression rate and depth, allowing complete chest recoil, minimizing interruptions, and providing appropriate ventilation.
1. Maintain the Correct Compression Rate
For adults, the recommended chest compression rate is 100 to 120 compressions per minute. This rate helps maintain blood flow while allowing enough time for each compression to reach the proper depth and for the chest to fully recoil.
A steady rhythm helps maintain the recommended compression rate throughout CPR. When available, a metronome or CPR feedback device can help maintain a consistent rate.
2. Use the Correct Compression Depth
The correct compression depth helps chest compressions maintain adequate blood flow during CPR. For adults, compress the chest at least 2 inches (5 cm) deep, but avoid compressing more than 2.4 inches (6 cm).
Shallow compressions may not move enough blood, while excessive depth can increase the risk of injury.
3. Allow Complete Chest Recoil
After each compression, allow the chest to return completely to its normal position before the next compression. Full recoil helps the heart refill with blood between compressions.
Avoid leaning on the chest between compressions, even while maintaining hand contact. Incomplete recoil can reduce the effectiveness of chest compressions and interfere with blood flow back to the heart.
4. Keep Interruptions to a Minimum
Keep interruptions in chest compressions to a minimum throughout CPR, and resume compressions as soon as possible after each pause.
One way to assess CPR performance is through the chest compression fraction, which is the percentage of resuscitation time spent performing chest compressions. A higher compression fraction generally means less time is spent without compressions, provided necessary interventions are still performed appropriately.
5. Provide Appropriate Ventilation
When conventional CPR is being performed for an adult without an advanced airway, use a 30:2 compression-to-ventilation ratio. Give each rescue breath over about 1 second, with enough air to produce a visible rise in the chest.
The goal is to provide adequate ventilation without giving too many breaths or too much air. Overventilation can increase pressure inside the chest, reduce blood returning to the heart, and interfere with effective CPR.
With proper training, you can apply high-quality CPR components effectively during real-world emergencies. Enroll in an AHA BLS course to build the hands-on skills needed to perform effective CPR.
What Is the Correct CPR Rate, Depth, and Ratio for Adults?
The main adult CPR measurements can be summarized as follows:
| CPR measure | Adult recommendation |
| Compression rate | 100 to 120 per minute |
| Compression depth | At least 2 inches or 5 cm |
| Maximum depth to avoid | Greater than 2.4 inches or 6 cm |
| Compression and ventilation ratio | 30 compressions to 2 breaths before an advanced airway |
| Chest recoil | Allow complete recoil |
| Interruptions | Keep as short as possible |
| Ventilation | Enough to produce visible chest rise |
| Chest compression fraction | At least 60% may be reasonable |
These recommendations are based on the 2025 AHA Adult Basic Life Support Guidelines.
Why Is Proper Hand Placement Important During CPR?
Proper hand placement helps the rescuer apply force to the correct area of the chest.
For adult CPR, the heel of one hand should be placed in the center of the chest over the lower half to lower third of the sternum. Place the other hand on top, with both hands overlapped.
When possible, position the patient appropriately before starting CPR. The AHA recommends performing adult chest compressions with the torso approximately level with the rescuer’s knees and preferably on a firm surface when this can be achieved without delaying CPR.
How Long Should CPR Interruptions Last?
The most important principle is to keep interruptions as short as possible.
CPR may need to pause for specific interventions such as:
- Delivering breaths during 30:2 CPR
- AED rhythm analysis
- Defibrillation
- Necessary rhythm or pulse assessment
- Changing the person performing compressions
For adult cardiac arrest, healthcare professionals should limit pulse checks during rhythm assessment to no more than 10 seconds when a pulse check is required. Avoiding unnecessary pauses keeps more of the CPR time focused on chest compressions.
How Does an AED Fit Into High-Quality CPR?
An automated external defibrillator, or AED, works alongside CPR during cardiac arrest.
CPR maintains circulation while the AED evaluates the heart rhythm and provides a shock when indicated. High-quality CPR should continue while the AED is being prepared, with interruptions kept as short as practical for rhythm analysis and shock delivery.
The 2025 AHA Guidelines emphasize early high-quality CPR and prompt defibrillation as key interventions that can improve outcomes in adults with cardiac arrest.
When an AED advises a shock, follow the device instructions and resume chest compressions immediately after the shock when directed.
Note: If you are not familiar with AED use, our guide explains the steps for using an AED.
How Can Rescuers Maintain CPR Quality During a Long Resuscitation?
CPR quality can decline as the rescuer becomes tired.
The AHA notes that compression depth can begin to decrease after approximately 90 to 120 seconds of CPR. If two or more rescuers are present, have another rescuer take over chest compressions about every 2 minutes.
A coordinated team can help maintain CPR quality by:
- Assigning clear roles
- Rotating the compressor approximately every 2 minutes
- Preparing the AED while CPR continues
- Communicating before necessary interruptions
- Monitoring compression rate and depth
What Are Common Mistakes That Reduce CPR Quality?
Even when a rescuer knows the basic CPR sequence, several technique problems can reduce CPR quality.
- Incorrect Compression Rate or Depth: A rate below the recommended range can result in too few effective compressions. Compressing too shallowly may reduce blood flow, while compressing too deeply can increase the risk of injury.
- Leaning on the Chest: Leaning on the chest between compressions can prevent complete chest recoil.
- Taking Unnecessary Pauses: Unnecessary interruptions reduce the time spent performing chest compressions.
- Giving Excessive Ventilation: Too many breaths or excessive breath volume can interfere with circulation and may cause other complications.
- Losing Proper Hand Position: Incorrect hand placement can reduce the effectiveness of chest compressions and increase the risk of injury.
- Failing to Change the Compressor: Fatigue can reduce compression depth. Rotating rescuers can help maintain compression quality during prolonged CPR.
Does High-Quality CPR Differ for Children and Infants?
CPR follows the same basic principles for adults, children, and infants. However, the correct compression depth and technique depend on the patient’s age and size.
For adults, press the chest down at least 2 inches (5 cm) with each compression, but avoid compressing deeper than 2.4 inches (6 cm).
For children and infants, compress the chest to at least one third of its depth. This is approximately 2 inches (5 cm) for children and 1.5 inches (4 cm) for infants. Pediatric CPR also includes specific recommendations for compression technique, ventilation, and rescuer positioning.
These differences are important during CPR training. Do not use the adult compression depth when performing CPR on a child or infant.
What Is the Difference Between CPR and High-Quality CPR?
CPR refers to the emergency procedure used to provide chest compressions and, when appropriate, ventilation during cardiac arrest.
High-quality CPR describes CPR performed with attention to the measures that affect its effectiveness. These include the correct compression rate and depth, complete chest recoil, minimal interruptions, and controlled ventilation.
The difference is not just whether CPR has been started, but how well it is performed.
Can CPR Feedback Devices Improve CPR Quality?
CPR feedback devices provide real-time information about compression rate, depth, and chest recoil during CPR.
The 2025 AHA Guidelines consider audiovisual feedback devices reasonable for helping rescuers improve CPR performance in real time. However, the evidence supporting their effect on overall resuscitation outcomes remains limited.
Feedback can help rescuers recognize problems that may not be obvious while performing compressions, such as inadequate depth or an inconsistent compression rate.
Why Is Training Important for High-Quality CPR?
Knowing the recommended CPR numbers does not automatically mean a person can perform them effectively.
CPR involves physical skills that need practice. A rescuer needs to coordinate compression rate, depth, recoil, ventilation, hand position, AED use, and communication during an emergency.
Hands-on CPR training allows learners to practice these skills on a manikin and receive feedback on their performance.
NewYork CPR classes offer AHA BLS, ACLS, and PALS CPR courses in a flexible blended learning format. Hands-on training helps learners practice high-quality CPR skills and respond effectively during an emergency. After successfully completing the course requirements, you can receive your AHA certification the same day.
Frequently Asked Questions About High-Quality CPR
Can You Perform CPR on a Soft Surface?
Yes. You can start CPR on a soft surface when moving the person to a firm surface would delay CPR. However, a firm surface is preferred for chest compressions, as a soft surface can make it harder to achieve the recommended compression depth.
What Does Chest Compression Fraction Mean in CPR?
Chest compression fraction is the percentage of resuscitation time spent performing chest compressions. A higher compression fraction generally means less time is spent without compressions while still allowing necessary interventions.
Can a Metronome Help Maintain the Correct CPR Rate?
Yes. A metronome can help rescuers maintain a consistent compression rate within the recommended range of 100 to 120 compressions per minute.
Why Can CPR Quality Decline During Prolonged Resuscitation?
Physical fatigue can make it harder to maintain proper compression depth and technique during prolonged CPR. When multiple rescuers are available, switching compressors can help maintain effective chest compressions.
How Does Communication Affect CPR Quality?
Clear communication helps rescuers coordinate roles, prepare equipment, manage necessary interruptions, and perform CPR as a coordinated team.
