American heart association basic life support exam b answers
For immediate response to a cardiac arrest, begin chest compressions. Ensure firm and deep compressions of at least 2 inches in depth at a rate of 100 to 120 per minute. This action should not stop until professional help arrives or the victim shows signs of recovery.
For ventilation, use the head-tilt, chin-lift maneuver to open the airway. Deliver two breaths lasting about 1 second each, ensuring the chest rises visibly. Use a barrier device if available for protection.
In cases of an adult not breathing and without a pulse, initiate CPR with chest compressions immediately. If there is an AED nearby, use it as soon as possible to shock the heart back into a regular rhythm. Remember, shock delivery should only occur when the AED indicates it’s safe to do so.
For infants and children, the compression depth is less than for adults. Use two fingers for infants and one or two hands for children, with compressions at a rate of 100 to 120 per minute. When providing rescue breaths, use a proper mask or a mouth-to-mouth technique depending on the situation.
Maintain a calm and clear approach throughout the process. Every second counts when saving a life, and quick, deliberate action is necessary to increase survival chances in critical situations.
American Heart Association Basic Life Support Exam B Answers
For high-quality chest compressions, ensure a depth of at least 2 inches (5 cm) and a rate of 100-120 compressions per minute. Ensure full recoil of the chest after each compression. Minimize interruptions during compressions.
In cases of a witnessed sudden collapse and no pulse, initiate chest compressions immediately. For an unresponsive individual, check for breathing and pulse before starting CPR. If the person is not breathing or has an abnormal pulse, begin compressions.
During two-rescuer CPR, one person should focus on chest compressions, while the other manages airway and ventilation. Switch positions every two minutes to avoid fatigue.
For defibrillation, follow the recommended steps: turn on the defibrillator, apply pads to the chest, and deliver a shock if advised. Ensure no one is touching the patient when the shock is delivered.
In pediatric cases, when delivering chest compressions, use one hand for infants and two hands for children older than 1 year. For infants, place your fingers just below the nipple line.
If an advanced airway is in place, do not pause chest compressions for ventilation. Deliver 1 breath every 6-8 seconds without interrupting compressions.
In situations requiring rescue breaths, deliver each breath over 1 second, ensuring the chest rises visibly with each breath.
| Action | Details |
|---|---|
| Compressions | Depth: 2 inches (5 cm), Rate: 100-120 per minute |
| Rescue Breaths | 1 breath every 6-8 seconds for advanced airway |
| Defibrillation | Apply pads, follow prompts for shock delivery |
| Pediatric CPR | 1 hand for infants, 2 hands for older children |
Understanding the Key Elements of CPR for Adult Victims
For adult victims, chest compressions should be performed at a depth of at least 2 inches (5 cm), at a rate of 100 to 120 compressions per minute. Ensure the chest fully recoils between compressions to maximize blood circulation.
Rescue breaths should be given at a ratio of 30 compressions to 2 breaths. Each breath should last about 1 second, making sure the chest rises visibly. If you’re unable or unwilling to give breaths, continuous chest compressions are better than doing nothing.
Use of an automated external defibrillator (AED) is strongly recommended as soon as available. Follow the AED prompts carefully, allowing the device to analyze the victim’s heart rhythm and deliver a shock if needed.
For more detailed guidelines, refer to the official page from the Red Cross.
How to Properly Perform Chest Compressions During BLS
Place your hands on the center of the chest, just below the nipple line. Keep your elbows straight and position your shoulders directly above your hands. Use your upper body weight to compress the chest at least 2 inches (5 cm) deep, ensuring a complete release between compressions. Maintain a compression rate of 100 to 120 per minute, without pausing for breaths unless instructed. Minimize interruptions to chest compressions to maintain circulation. Reassess the patient’s condition regularly and adjust your actions accordingly.
Identifying and Responding to Common Cardiac Emergencies
If someone collapses and is unresponsive, immediately check for breathing and pulse. If there is no pulse or the person is not breathing normally, initiate chest compressions. Begin CPR without delay to increase blood flow to the brain and vital organs.
For victims with signs of a heart attack, such as chest discomfort, sweating, or shortness of breath, encourage the person to chew an aspirin if they are not allergic. Call emergency services immediately and keep the person calm and still.
In case of an arrhythmic event or sudden cardiac arrest, defibrillation with an AED (automated external defibrillator) can be life-saving. If available, use an AED as soon as possible following the recommended steps for analysis and shock delivery.
- Chest discomfort or pain that lasts more than a few minutes
- Difficulty breathing or shortness of breath
- Sudden dizziness, lightheadedness, or fainting
- Cold sweats or nausea without any clear cause
During CPR, provide compressions at a depth of at least 2 inches and a rate of 100 to 120 per minute. Allow for complete chest recoil between compressions to ensure blood flow to vital organs.
- Check for a pulse every 2 minutes to reassess if chest compressions are still needed.
- If an AED is available, follow the prompts and apply the pads to the bare chest.
If the individual is responsive, avoid giving food or drink, as they may have difficulty swallowing. Keep the patient calm, ensure they remain still, and monitor their breathing and pulse until help arrives.
Steps for Using an Automated External Defibrillator (AED)
Ensure the area is clear and the person is on a firm surface. Check the victim’s responsiveness and pulse. If there is no pulse, call emergency services immediately.
Turn on the AED by pressing the power button. Follow the voice prompts provided by the device.
Expose the chest and clean it if necessary. Place the adhesive electrode pads on the bare chest as indicated by the diagrams on the pads. One pad goes on the upper right side of the chest, just below the collarbone, and the other on the lower left side, below the ribcage.
Once the pads are in place, allow the AED to analyze the heart rhythm. Do not touch the victim while the device is assessing. If a shock is advised, make sure no one is in contact with the person, then press the shock button when prompted.
After the shock, or if no shock is advised, begin CPR immediately. Continue chest compressions and rescue breaths until emergency responders arrive or the victim shows signs of life.
Recognizing the Signs of Respiratory Arrest in Patients
Look for the absence of normal breathing. The patient may exhibit no chest rise or fall. Check for any abnormal or irregular breathing patterns, such as gasping or very shallow breaths, which could indicate respiratory distress or arrest.
Observe for signs of cyanosis (bluish skin, especially around the lips or fingertips), as a lack of oxygen can cause this appearance.
Listen for any sounds such as wheezing or gurgling. These can signal blocked airways or a lack of proper airflow.
Assess the pulse. In cases of respiratory arrest, the heart rate may drop, or there may be no pulse detected.
Ensure the patient is not moving or responding to stimuli, which could also indicate a life-threatening condition.
Handling Special Cases: BLS for Children and Infants
For infants and young children, adjustments to resuscitation techniques are necessary to ensure proper care. Follow these key guidelines:
- Chest compressions: For infants, use two fingers at the center of the chest, just below the nipple line. For children, use one or two hands depending on their size, placing them on the lower half of the sternum.
- Compression depth: Compress the chest at least one-third of its depth. For infants, this is about 1.5 inches (4 cm). For children, compress at least 2 inches (5 cm).
- Compression rate: Maintain a rate of 100-120 compressions per minute, similar to adult standards.
- Rescue breaths: Give gentle breaths that make the chest rise. For infants, use a covering technique with your mouth, and for children, ensure the seal is tight enough to deliver air effectively.
- Airway positioning: For infants, place the head in a neutral position. For older children, tilt the head back slightly to open the airway.
In case of an emergency, if you are alone with an infant or child, provide compressions for about 2 minutes before calling for help. For infants, call for help immediately if you witness the event or are unsure of the cause. Be prepared to adjust your technique as needed based on the child’s age and size.