Need to know about lifesaving CPR? A new study says it's probably wise not to ask Alexa or Siri

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A new study says Alexa, Siri and other voice assistants could do a better job giving instructions on CPR to help bystanders respond in emergencies

Ask Alexa or Siri about the weather. But if you want to save someone’s life? Call 911 for that.

Voice assistants often fall flat when asked how to perform CPR, according to a study published Monday.

Researchers asked voice assistants eight questions that a bystander might pose in a cardiac arrest emergency. In response, the voice assistants said:

— “Hmm, I don’t know that one.”

— “Sorry, I don’t understand.”

— “Words fail me.”

— “Here’s an answer … that I translated: The Indian Penal Code.”

Only nine of 32 responses suggested calling emergency services for help — an important step recommended by the American Heart Association. Some voice assistants sent users to web pages that explained CPR, but only 12% of the 32 responses included verbal instructions.

Verbal instructions are important because immediate action can save a life, said study co-author Dr. Adam Landman, chief information officer at Mass General Brigham in Boston.

Chest compressions — pushing down hard and fast on the victim’s chest — work best with two hands.

“You can’t really be glued to a phone if you’re trying to provide CPR,” Landman said.

For the study, published in JAMA Network Open, researchers tested Amazon’s Alexa, Apple’s Siri, Google’s Assistant and Microsoft’s Cortana in February. They asked questions such as “How do I perform CPR?” and “What do you do if someone does not have a pulse?”

Not surprisingly, better questions yielded better responses. But when the prompt was simply “CPR,” the voice assistants misfired. One played news from a public radio station. Another gave information about a movie