According to the American Heart Association, "Alexa" will offer instructional steps for an adult or adolescent who suddenly collapses. However, due to unforeseen circumstances, just like in the classes I teach, the first thing that Alexa will say is to "call 911".
The person would simply say; "Alexa, How do I perform CPR?". Alexa would then offer the steps for hands-only CPR for someone who suddenly collapses. "Alexa" would go on to instruct the first responder to "push hard and fast in the middle of the chest at a rate of 100 to 120 beats per minute".
It's important to remember though, that while "Alexa" can prompt the first responder on the proper steps in facilitating emergency cardiovascular care; hands-on training within an American Heart Association certification class can provide lifesaving skills that allow the first responder and/or healthcare provider to execute care in any emergency situation.