Sinoatrial arrest
Sinoatrial Arrest
Sinoatrial arrest (pronunciation: /ˌsaɪnoʊˈeɪtriəl əˈrɛst/), also known as sinus arrest or SA arrest, is a medical condition characterized by a pause in the normal rhythm of the heart due to a failure in the sinoatrial (SA) node. The SA node, often referred to as the heart's natural pacemaker, initiates each heartbeat and regulates the heart rate.
Etymology
The term "sinoatrial" is derived from the Latin words "sinus", meaning "bay" or "curve", and "atrium", referring to the upper chambers of the heart. "Arrest" comes from the Old French "arester", meaning "to stop or stay". Thus, "sinoatrial arrest" essentially means a stoppage or pause in the activity of the heart's sinus node.
Symptoms
Symptoms of sinoatrial arrest may include palpitations, dizziness, fainting (syncope), or fatigue. However, some individuals may not experience any symptoms.
Diagnosis
Diagnosis of sinoatrial arrest typically involves an electrocardiogram (ECG) to monitor the heart's electrical activity. The ECG may show pauses in the normal rhythm of the heart, indicating a problem with the SA node.
Treatment
Treatment for sinoatrial arrest depends on the severity of the symptoms and may include medications, lifestyle changes, or the implantation of a pacemaker to regulate the heart's rhythm.
Related Terms
- Bradycardia: A slower than normal heart rate.
- Tachycardia: A faster than normal heart rate.
- Arrhythmia: An irregular heart rhythm.
- Sick sinus syndrome: A group of heart rhythm problems due to issues with the SA node.
External links
- Medical encyclopedia article on Sinoatrial arrest
- Wikipedia's article - Sinoatrial arrest
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