What is the correct basic BLS sequence for an adult patient who collapses in a dental practice?

• A. Check safety; approach; assess responsiveness; shout for help; check breathing and pulse; if no pulse, start CPR (30 compressions, 2 rescue breaths) and call emergency services; use an AED as soon as available; monitor and support until help arrives.
• B. Call emergency services first, then check for responsiveness.
• C. Begin CPR without checking pulse or breathing.
• D. Delay until the patient is clearly unconscious.

Answer: (A)