https://www.heart.org/en/health-topics/heart-attack/warning-signs-of-a-heart-attack?ref=thebluealaskan.com
Warning Signs of a Heart Attack | American Heart Association
What are the warning signs of a heart attack? They include chest discomfort, arm, neck and jaw pain, shortness of breath, and more.
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https://www.heartandstroke.ca/en/heart-disease/emergency-signs/
Signs of a heart attack | Heart and Stroke Foundation
Learn the warning signs and symptoms of a heart attack, and what to do. Understand the difference between heart attack and cardiac arrest.
signs of a heart attackstrokefoundation