James suffers a heart attack. His heartbeat and breathing have stopped completely. How would you help him Call 911 wait for medics to arrive. Perform the Heimlich maneuver. CPR.?

Call 911 immediately. This is the most important step, as it will get medical help to James as quickly as possible.

While you are waiting for the medics to arrive, you can perform CPR. CPR can help to keep James's heart and lungs functioning until medical help arrives.

Here are the steps on how to perform CPR:

1. Check for responsiveness. Gently shake James and shout, "Are you okay?" If he does not respond, he is unresponsive.

2. Call 911. If you have not already done so, call 911 immediately.

3. Start chest compressions. Place the heel of one hand on the center of James's chest, between his nipples. Place your other hand over your first hand and interlace your fingers. Give 30 chest compressions at a rate of 100 to 120 compressions per minute. Push down hard and fast, about 3.8 to 5 cm (1.5 to 2 inches). Allow the chest to recoil between compressions.

4. Give rescue breaths. After 30 chest compressions, pinch James's nose closed and cover his mouth with your mouth to create a seal. Give two rescue breaths, each lasting about 1 second. Make sure that his chest rises and falls with each breath.

5. Continue CPR until help arrives. Continue giving chest compressions and rescue breaths until medical help arrives. If you become tired, switch with another person who can perform CPR.

Do not perform the Heimlich maneuver on someone who has a heart attack. The Heimlich maneuver is used to dislodge a foreign object from someone's airway. It is not effective for treating a heart attack.