Rescuers should switch every 2 minutes (or 5 cycles of compressions) to maintain high-quality CPR.

Chest compressions keep oxygenated blood circulating to the brain and heart until normal function is restored.

Over-ventilation can increase intrathoracic pressure, reducing venous return and cardiac output.

Visible chest rise is the best indicator that rescue breaths are effectively ventilating the lungs.

Gasping (agonal breathing) is not normal breathing and should not delay CPR.

Pulse checks should be limited to 10 seconds to avoid delaying CPR.

If the AED does not advise a shock, rescuers should immediately resume CPR.

The recommended compression rate is 100-120 compressions per minute.

The recommended compression rate is 100-120 compressions per minute.

Equal chest rise confirms proper ventilation and airway placement.

To minimize interruptions in care, breathing and pulse checks should be performed simultaneously, taking no more than 10 seconds.

An AED analyzes the heart rhythm and delivers a shock if a shockable rhythm is present.

In a hospital setting, bag-mask ventilation is the preferred method for delivering rescue breaths.

Agonal breathing is a sign of cardiac arrest and CPR should be initiated.

Rescue breaths should be given before starting chest compressions in drowning victims.

Unlike adults, the most common cause of cardiac arrest in infants and children is respiratory failure leading to hypoxia.

Pulse checks should be performed approximately every 2 minutes when providing rescue breathing.

High-quality chest compressions are the top priority in cardiac arrest, with ventilation as a secondary focus.

Switching roles every 2 minutes ensures high-quality compressions without fatigue.

In BLS, medication administration is not a designated role—this falls under ACLS-level care.

Most AEDs are programmed to reanalyze the heart rhythm every 2 minutes.

A firm surface is needed to ensure effective compressions.

Rescue breathing is the correct response if the patient has a pulse but no breathing.

Defibrillation should be performed as soon as a shockable rhythm is detected by the AED.

Once an advanced airway is in place, continuous compressions should be given at 100-120 per minute without pausing for breaths.

Adult chest compressions should be at least 2 inches (5 cm) deep.

Encourage the victim to keep coughing instead of immediately intervening.

High-quality chest compressions help circulate oxygenated blood to the brain and heart.

Excessive ventilation can cause complications like gastric inflation.

Rescuers should switch every 2 minutes to maintain high-quality CPR and prevent fatigue.

High-quality CPR requires minimizing interruptions to maintain circulation.

The best way to ensure effective ventilation is by observing visible chest rise with each breath.

Encourage the victim to keep coughing instead of immediately intervening.

High-quality CPR requires minimizing interruptions to maintain circulation.

For infants, responsiveness is assessed by tapping the bottom of the foot and shouting.

For a choking infant, back slaps and chest thrusts should be used instead of abdominal thrusts.

Ventilations should be given every 6 seconds when an advanced airway is in place.

Unless a valid DNR order is confirmed, resuscitation efforts should begin.

If a patient is unresponsive with a suspected airway obstruction, chest compressions should be initiated immediately to help clear the airway.

Ventilations should be given every 6 seconds when an advanced airway is in place.

The correct compression depth for adult CPR is at least 2 inches (5 cm).

Breathing assessment should take no more than 10 seconds to avoid delaying CPR.

For adult CPR, compressions should be performed with two hands, one on top of the other, placed on the lower half of the sternum.

Adult chest compressions should be at least 2 inches (5 cm) deep.

For two-rescuer infant CPR, the correct compression-to-ventilation ratio is 15:2.

Single-rescuer infant CPR follows the 30:2 compression-to-ventilation ratio, just like adults.

Ventilations should be given every 6 seconds when an advanced airway is in place.

Reassessment should occur every 5 cycles of CPR (about 2 minutes) unless an AED prompts earlier evaluation.

Rescue breaths should be given before starting chest compressions in drowning victims.

For suspected spinal injuries, the jaw thrust maneuver is used instead of head tilt-chin lift to maintain spinal alignment.

If a choking victim becomes unresponsive, emergency services should be activated, and CPR should begin immediately.

Agonal breathing is a sign of cardiac arrest and CPR should be initiated.

The E-C clamp technique ensures a tight seal while lifting the jaw for an open airway.

If a choking victim becomes unresponsive and pulseless, CPR should begin immediately, starting with compressions.

Breaths should be delivered over 1 second each to produce visible chest rise.