You are called to a local restaurant for a 45-year-old male who collapsed while eating dinner. He is unresponsive, lying supine on the floor. Bystanders tell you he grabbed his chest and went down. You check for a pulse and find none.
What is your MOST appropriate next step?
A) Perform abdominal thrusts to clear a possible airway obstruction
B) Begin high-quality CPR starting with chest compressions
C) Insert an OPA and deliver ventilations with a BVM
D) Open the airway with a head-tilt chin-lift and check for breathing