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  1. Bradycardia - Symptoms and causes - Mayo Clinic

    Dec 13, 2024 · Bradycardia can be a serious problem if the heart rate is very slow and the heart can't pump enough oxygen-rich blood to the body. If this happens, you may feel dizzy, very tired or weak, …

  2. Bradycardia - Diagnosis and treatment - Mayo Clinic

    Dec 13, 2024 · Treatment for bradycardia depends on how severe the symptoms are and the cause of the slow heart rate. If you don't have symptoms, treatment might not be needed.

  3. Should I be alarmed when my heart rate is between 39 to 41 occasionaly

    Apr 25, 2025 · Since my heart rate has been measured, it is consistently around 45 resting and as low as 32 when sleeping. The rate depends on genetics, daily activities that elevate heart rate above …

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

    Oct 22, 2025 · Your resting heart rate is the number of times your heart beats each minute while you are awake, calm and not moving. A lower resting heart rate usually means the heart doesn't have to work …

  5. Heart arrhythmia - Symptoms and causes - Mayo Clinic

    Oct 13, 2023 · Slow heartbeat, called bradycardia A heart rate below 60 beats a minute is considered bradycardia. But a low resting heart rate doesn't always mean there's a problem. If you're physically …

  6. Low heart rate. Should I be concerned? - Mayo Clinic Connect

    Apr 2, 2025 · You should talk to your medical providers about the impact of those medications on your heart rate and your BP. Your HR in the high 40s would be a concern for most doctors.

  7. Bradycardia how low is too low - Mayo Clinic Connect

    Aug 17, 2025 · My overall heart rate averages about 54. My cardiologist is taking a wait and see approach, but I'm still wondering if it may suddenly drop too low in the middle of the night.

  8. Medications that affect heart rate - Mayo Clinic Connect

    Jul 24, 2024 · Yes, the beta blockers and calcium channel blockers will lower your heart rate when it is beating properly, and it can get dangerously low when at rest or when asleep.

  9. Mayo Clinic Minute: How the thyroid affects the heart

    Sep 11, 2019 · "If someone has low levels of thyroid hormone, cholesterol level goes up. The cholesterol can then have an adverse effect on the heart and peripheral vascular system, and it can lead to an …

  10. Low Heart Rate - Mayo Clinic Connect

    Jun 3, 2025 · My heart rate has been in the 60 bpm range but when I'm sitting for a period of time in drops in the mid to low 50 bpm. It drops to the mid to low 40 bpm when I'm sleeping.