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Verify scene safety

Check responsiveness
Get help

Pulse:

Yes
Breathing:
Normal

Assess
for breathing
and pulse

Pulse:

Yes
Breathing:
Abnormal

Monitor until
emergency
responders arrive

Pulse:

No
Breathing:
Gasping/
None

Maintain patient
airway and begin
rescue breathing

Witnessed
sudden
collapse?

YES
NO

Activate emergency
response system
and retrieve AED

CPR

If still alone, after about 2 minutes
of CPR, activate emergency
response system and retrieve AED

NO

Shockable
rhythm?

YES

Resume CPR

Administer shock
Resume CPR

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