Heart arrhythmia - Symptoms and causes - Mayo Clinic
2023年10月13日 · Bradycardia (brad-e-KAHR-dee-uh) is a slow heartbeat. The heart rate is less than 60 beats a minute. Fast heartbeat, called tachycardia. Types of tachycardias include: Atrial fibrillation (AFib). Chaotic heart signaling causes a rapid, uncoordinated heartbeat. AFib may be temporary and start and stop on its own. But some episodes may not stop ...
Heart rate: What's normal? - Mayo Clinic
2022年10月8日 · A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness.
Tachycardia - Symptoms and causes - Mayo Clinic
2023年12月15日 · Supraventricular tachycardia is a broad term that includes irregular heart rhythms that start above the lower heart chambers. Supraventricular tachycardia causes episodes of a pounding heartbeat that begin and end abruptly. Ventricular fibrillation. This serious condition can be deadly if the heart rhythm isn't reset within minutes.
Heart palpitations - Symptoms & causes - Mayo Clinic
2022年3月11日 · Rarely, palpitations can be caused by life-threatening heartbeat problems and can cause the heart to stop beating effectively. Stroke. If palpitations are due to a condition in which the upper chambers of the heart quiver instead of beating properly (atrial fibrillation), blood can pool and cause clots to form.
Heart arrhythmia - Diagnosis and treatment - Mayo Clinic
2023年10月13日 · A pacemaker is a small device that's placed in the chest to help control the heartbeat. Implantable cardioverter-defibrillator (ICD). This device is placed under the skin near the collarbone. It continuously checks the heart rhythm. If the device finds an irregular heartbeat, it sends out low- or high-energy shocks to reset the heart's rhythm.
Ventricular tachycardia - Symptoms and causes - Mayo Clinic
2024年3月6日 · Sometimes the rapid heartbeat stops the heart chambers from properly filling with blood. The heart may not be able to pump enough blood to the body. If this happens, you may feel short of breath or lightheaded. Some people lose consciousness. Ventricular tachycardia episodes may be brief and last only a few seconds without causing harm.
Heart disease - Symptoms and causes - Mayo Clinic
2024年8月13日 · Racing heartbeat. Shortness of breath. Slow heartbeat. Heart disease symptoms caused by congenital heart defects. A congenital heart defect is a heart condition present at birth. Serious congenital heart defects usually are noticed soon after birth. Congenital heart defect symptoms in children could include: Blue or gray skin.
Atrial fibrillation - Symptoms and causes - Mayo Clinic
2024年3月8日 · The irregular heartbeat is constant. The heart rhythm does not reset on its own. If symptoms occur, medical treatment is needed to correct the heart rhythm. Long-standing persistent. This type of AFib is constant and lasts longer than 12 months. Medicines or a procedure are needed to correct the irregular heartbeat. Permanent.
Supraventricular tachycardia - Symptoms and causes - Mayo Clinic
2024年3月7日 · The main symptom of supraventricular tachycardia (SVT) is a very fast heartbeat that may last for a few minutes to a few days. The heart beats 100 or more times a minute. Usually during SVT, the heart beats 150 to 220 times a minute. The fast heartbeat may come and go suddenly. Symptoms of supraventricular tachycardia may include:
Heart palpitations - Diagnosis & treatment - Mayo Clinic
2022年3月11日 · If your doctor thinks that palpitations are caused by an irregular heartbeat or other heart condition, tests might include: Electrocardiogram (ECG or EKG). This quick and painless test measures the electrical activity of the heart. Sticky patches (electrodes) are placed on the chest and sometimes the arms and legs.