Disclaimer

IMPORTANT NOTICE

For chest pain or pressure, severe breathlessness, fainting, altered consciousness, marked dizziness, or palpitations with a cold sweat, call your local emergency number now. Do not wait for a particular pulse rate or pause duration, and do not delay emergency care to measure again or check an app.

This is general educational information, not a substitute for medical diagnosis or treatment. A personal baseline, online measurement, or app reading cannot diagnose or rule out disease. Online measurement estimates pulse rate and is not an ECG. Consult a healthcare professional about concerning changes.