tachykardeunregelmäßige

The term “tachykardeunre” appears to be a misspelling or a nonstandard variant of tachycardia. This article provides an overview of tachycardia, a condition characterized by a heart rate that is faster than normal at rest.

Tachycardia is typically defined in adults as a resting heart rate exceeding 100 beats per minute. It can arise from normal physiological responses, such as exercise, fever, anxiety, or dehydration, or from pathologic processes affecting the heart or its electrical system. Tachycardia is not a single disease but a group of conditions, including sinus tachycardia (faster-than-normal but regular heart rhythm) and tachyarrhythmias such as supraventricular tachycardia (SVT) and ventricular tachycardia.

Common types include sinus tachycardia, which often reflects a reversible cause; SVTs like AV nodal reentrant tachycardia or atrial tachycardia; and ventricular tachycardia, which can be more dangerous and may require urgent attention. Symptoms range from palpitations and lightheadedness to chest pain and shortness of breath; some people, especially with mild or well-compensated tachycardia, may have no noticeable symptoms.

Diagnosis involves clinical evaluation and electrocardiography (ECG), with additional monitoring (Holter or event recorders) and tests to identify underlying causes such as anemia, fever, hyperthyroidism, electrolyte disturbances, or structural heart disease. Treatment focuses on the underlying cause and the type of tachycardia. Acute management for stable SVT may involve vagal maneuvers or adenosine; unstable cases may require electrical cardioversion. Chronic management can include medications, catheter ablation, or device therapy in selected patients.

Prognosis depends on the underlying cause and the presence of structural heart disease; persistent tachycardia can contribute to cardiomyopathy if not adequately controlled.