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  1. Heart rate: What's normal? - Mayo Clinic

    Oct 22, 2025 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. A heart rate above or below that may signal a health condition.

  2. Exercise intensity: How to measure it - Mayo Clinic

    Aug 25, 2023 · If you think you're working hard, your heart rate is probably higher than usual. Your heart rate. Your heart rate offers a more fact-based look at exercise intensity. In general, …

  3. How fit are you? See how you measure up - Mayo Clinic

    Jan 18, 2024 · Checking pulse over the carotid artery Your heart rate at rest is a measure of heart health and fitness. For most adults, a healthy heart rate is between 60 to 100 beats per …

  4. Blood pressure chart: What your reading means - Mayo Clinic

    Feb 28, 2024 · The American College of Cardiology and the American Heart Association divide blood pressure into four general categories. Ideal blood pressure is categorized as normal. …

  5. How to take your pulse - Mayo Clinic

    Apr 16, 2024 · A pulse is the heart rate. It's the number of times the heart beats in one minute. The pulse can be measured using the radial artery in the wrist or the carotid artery in the neck. …

  6. Mayo Clinic corrected QT interval (QTc) calculator - Medical ...

    This calculator calculates the heart rate-corrected QT interval and guides prescription decisions to prevent drug-induced QT interval prolongation.

  7. Atrial fibrillation - Symptoms and causes - Mayo Clinic

    Oct 3, 2025 · Permanent. The irregular heart rhythm can't be reset. Medicines are needed to control the heart rate and to prevent blood clots. When to see a doctor If you have symptoms …

  8. Ejection fraction: An important heart test - Mayo Clinic

    Jan 29, 2025 · Ejection fraction is a measurement of the percentage of blood leaving the heart each time it squeezes. When the heart squeezes, it's called a contraction. Ejection fraction is …

  9. Heart arrhythmia - Symptoms and causes - Mayo Clinic

    Oct 13, 2023 · In a healthy heart, this heart signaling process usually goes smoothly, resulting in a resting heart rate of 60 to 100 beats a minute. But some things can change how electrical …

  10. Electrocardiogram (ECG or EKG) - Mayo Clinic

    Apr 2, 2024 · An electrocardiogram (ECG or EKG) is a quick test to check the heartbeat. It records the electrical signals in the heart. Test results can help diagnose heart attacks and …