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Heart arrhythmia - Symptoms and causes - Mayo Clinic 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
Tachycardia - Symptoms and causes - Mayo Clinic 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
Ventricular tachycardia - Symptoms and causes - Mayo Clinic 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 palpitations - Symptoms causes - Mayo Clinic 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
Atrial fibrillation - Symptoms and causes - Mayo Clinic 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
Implantable loop recorder: A heart monitoring device An irregular heartbeat, called an arrhythmia An unexplained stroke Unexplained fainting An implantable loop recorder can see changes in the heartbeat that other heart-recording devices may miss For example, it may find irregular heartbeats that are brief or that only happen once in a while
Heart arrhythmia - Diagnosis and treatment - Mayo Clinic 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
Atrial flutter - Symptoms and causes - Mayo Clinic Changes in the heart's electrical system cause atrial flutter The heart's electrical system controls the heartbeat Some health conditions or heart surgery can change how electrical signals travel through the heart and cause atrial flutter The movement of the heart's signals make the heart squeeze and pump blood Usually, this process goes
Supraventricular tachycardia - Symptoms and causes - Mayo . . . - Mayo Clinic 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: