| http://www.w3.org/ns/prov#value | - When changes such as the heart not getting enough oxygen occur, an antenna on the device sends a signal to a pager the patient carriers, notifying them that a heart attack may be imminent.???Heart attack symptoms are often misunderstood, causing patients to unknowingly delay treatment,??? says Klein. ???This device makes it clear that medical attention is needed, allowing the patient to seek help
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