David Markenson, MD, serves as the Chief Medical Officer for the Red Cross Training Services Division. In his 25 years as a physician, he’s seen how CPR and AEDs can …
![An instructor teaching CPR. The trainee is practicing compressions on a manikin.](https://redcrosschat.org/wp-content/uploads/2019/06/Photo-CPR-Class-400x360.jpg)
David Markenson, MD, serves as the Chief Medical Officer for the Red Cross Training Services Division. In his 25 years as a physician, he’s seen how CPR and AEDs can …