National Lifeguards are highly skilled and trained individuals. To become a lifeguard you must be 16 years of age and have Bronze Cross and Standard First Aid certifications. See the chart for the progression.
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CPR minimizes the possibility of brain damage by supplying oxygen to the brain, but the heart won't start beating again without defibrillation. The possibility of successful resuscitation declines 7-10% with each minute that passes without defibrillation. After 12 minutes, less than 2-5% of victims will live.
