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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
- 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
- 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
- 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
- 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
- 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
- Ventricular fibrillation - Symptoms causes - Mayo Clinic
The heartbeat The typical heart has four chambers — two upper chambers (atria) and two lower chambers (ventricles) Within the upper right chamber of the heart (right atrium) is a group of cells called the sinus node The sinus node is the heart's natural pacemaker It produces the signals that start each heartbeat
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