Heart arrhythmia - Symptoms and causes - Mayo Clinic
网页2023年10月13日 · A heart arrhythmia (uh-RITH-me-uh) is an irregular heartbeat. A heart arrhythmia occurs when the electrical signals that tell the heart to beat don't work properly. The heart may beat too fast or too slow.
Heart arrhythmia - Diagnosis and treatment - Mayo Clinic
网页2023年10月13日 · To diagnose a heart arrhythmia, a healthcare professional examines you and asks about your medical history and symptoms. You may have tests to check your heart and to look for health conditions that can cause an irregular heartbeat.
Atrial fibrillation - Symptoms and causes - Mayo Clinic
网页2024年3月8日 · Atrial fibrillation (AFib) is an irregular and often very rapid heart rhythm. An irregular heart rhythm is called an arrhythmia. AFib can lead to blood clots in the heart. The condition also increases the risk of stroke, heart failure …
Tachycardia - Symptoms and causes - Mayo Clinic
网页2023年12月15日 · Many types of irregular heart rhythms, called arrhythmias, can cause tachycardia. A fast heart rate isn't always a concern. For instance, the heart rate usually rises during exercise or as a response to stress. Tachycardia may not cause any symptoms or complications.
Supraventricular tachycardia - Symptoms and causes - Mayo Clinic
网页2024年3月7日 · Supraventricular tachycardia (SVT) is a type of irregular heartbeat, also called an arrhythmia. It's a very fast or erratic heartbeat that affects the heart's upper chambers. SVT also is called paroxysmal supraventricular tachycardia. The typical heart beats about 60 to 100 times a minute.
Implantable cardioverter-defibrillators (ICDs) - Mayo Clinic
网页2023年8月15日 · An implantable cardioverter-defibrillator (ICD) is a small battery-powered device placed in the chest. It detects and stops irregular heartbeats, also called arrhythmias. An ICD continuously checks the heartbeat. It delivers electric shocks, when needed, to restore a regular heart rhythm.
Ventricular tachycardia - Symptoms and causes - Mayo Clinic
网页2024年3月6日 · Ventricular tachycardia is a type of irregular heartbeat, called an arrhythmia. It starts in the lower chambers of the heart, called the ventricles. This condition also may be called V-tach or VT. A healthy heart typically beats about 60 to 100 times a minute at rest.
Heart palpitations - Symptoms & causes - Mayo Clinic
网页2022年3月11日 · Although heart palpitations can be worrisome, they're usually harmless. Rarely, heart palpitations can be a symptom of a more serious heart condition, such as an irregular heartbeat (arrhythmia), that might require treatment.
Arritmia cardíaca - Síntomas y causas - Mayo Clinic
网页2023年10月13日 · Algunas arritmias son inofensivas. Otras pueden causar síntomas que ponen en riesgo la vida. En algunos momentos, tener un ritmo cardíaco lento o rápido no es motivo de preocupación. Por ejemplo, el corazón puede latir más rápido con el ejercicio o más lento durante el sueño.
Ventricular fibrillation - Symptoms & causes - Mayo Clinic
网页2022年10月28日 · Ventricular fibrillation is a type of irregular heart rhythm (arrhythmia). During ventricular fibrillation, the lower heart chambers contract in a very rapid and uncoordinated manner. As a result, the heart doesn't pump blood to the rest of the body.