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  2. Bradycardia - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/.../symptoms-causes/syc-20355474

    Bradycardia (brad-e-KAHR-dee-uh) is a slow heart rate. The hearts of adults at rest usually beat between 60 and 100 times a minute. If you have bradycardia, your heart beats fewer than 60 times a minute.

  3. Bradycardia - Diagnosis and treatment - Mayo Clinic

    www.mayoclinic.org/diseases-conditions/bradycardia/...

    Treatment for bradycardia depends on the severity of symptoms and the cause of the slow heart rate. If you don't have symptoms, treatment might not be necessary. Bradycardia treatment may include lifestyle changes, medication changes or an implanted device called a pacemaker.

  4. Heart arrhythmia - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/.../symptoms-causes/syc-20350668

    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 fit, your heart may be able to pump enough blood to the body with less than 60 beats a minute.

  5. Low blood oxygen (hypoxemia) Causes - Mayo Clinic

    www.mayoclinic.org/symptoms/hypoxemia/basics/causes/sym...

    You might learn you have hypoxemia when you see a doctor for shortness of breath or another breathing-related problem. Or you might share the results of an at-home pulse oximetry test with your doctor. If you use a pulse oximeter at home, be aware of factors that can make the results less accurate: Poor circulation.

  6. Low blood pressure (hypotension) - Symptoms and causes

    www.mayoclinic.org/diseases-conditions/low-blood-pressure/...

    Symptoms. Low blood pressure symptoms can include: Blurred or fading vision. Dizzy or lightheaded feelings. Fainting. Fatigue. Trouble concentrating. Upset stomach. For some people, low blood pressure may be a symptom of an underlying health condition. That's especially so when blood pressure drops suddenly or when low blood pressure occurs ...

  7. Tachycardia - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/.../symptoms-causes/syc-20355127

    In tachycardia, an irregular electrical signal, called an impulse, starts in the upper or lower chambers of the heart. This causes the heart to beat faster. Tachycardia (tak-ih-KAHR-dee-uh) is the medical term for a heart rate over 100 beats a minute.

  8. Low blood oxygen (hypoxemia) - Mayo Clinic

    www.mayoclinic.org/symptoms/hypoxemia/basics/definition/...

    Hypoxemia is a low level of oxygen in the blood. It starts in blood vessels called arteries. Hypoxemia isn't an illness or a condition. It's a sign of a problem tied to breathing or blood flow. It may lead to symptoms such as: Shortness of breath. Rapid breathing. Fast or pounding heartbeat. Confusion.

  9. Atrial fibrillation - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/.../symptoms-causes/syc-20350624

    Symptoms. Symptoms of AFib may include: Feelings of a fast, fluttering or pounding heartbeat, called palpitations. Chest pain. Dizziness. Fatigue. Lightheadedness. Reduced ability to exercise. Shortness of breath. Weakness. Some people with atrial fibrillation (AFib) don't notice any symptoms. Atrial fibrillation may be:

  10. Hypoglycemia - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/.../symptoms-causes/syc-20373685

    The body and brain no longer produce signs and symptoms that warn of a low blood sugar, such as shakiness or irregular heartbeats (palpitations). When this happens, the risk of severe, life-threatening hypoglycemia increases.

  11. Hypothyroidism (underactive thyroid) - Symptoms and causes

    www.mayoclinic.org/.../symptoms-causes/syc-20350284

    The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain.