Carotid sinus syncope
Carotid Sinus Syncope
Carotid sinus syncope (pronunciation: kuh-ROT-id SIN-us SIN-ko-pee) is a medical condition characterized by a sudden loss of consciousness, typically caused by a decrease in blood flow to the brain. This condition is often associated with the carotid sinus, a baroreceptor located in the carotid artery that helps regulate blood pressure.
Etymology
The term "carotid sinus syncope" is derived from the Greek words "karōtides" meaning "sleep-inducing", "sinus" from the Latin "sinus" meaning "bend or curve", and "syncope" from the Greek "synkope" meaning "cutting off".
Symptoms
Symptoms of carotid sinus syncope may include sudden fainting, dizziness, or lightheadedness. These symptoms are often triggered by certain neck movements or pressure on the neck, such as when wearing a tight collar.
Causes
Carotid sinus syncope is typically caused by an overreaction of the carotid sinus reflex, which can cause a sudden drop in heart rate and blood pressure. This can lead to a temporary decrease in blood flow to the brain, resulting in a loss of consciousness.
Diagnosis
Diagnosis of carotid sinus syncope often involves a carotid sinus massage, which can trigger symptoms and help confirm the diagnosis. Other diagnostic tests may include an electrocardiogram (ECG) or a tilt table test.
Treatment
Treatment for carotid sinus syncope typically involves avoiding triggers, such as certain neck movements or tight collars. In some cases, medication or a pacemaker may be recommended to help regulate heart rate and blood pressure.
Related Terms
- Carotid sinus
- Carotid sinus reflex
- Carotid sinus massage
- Electrocardiogram
- Tilt table test
- Pacemaker
External links
- Medical encyclopedia article on Carotid sinus syncope
- Wikipedia's article - Carotid sinus syncope
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