What is carotid sinus?
The carotid sinus is a dilation at the base of the internal carotid artery. The nearby carotid body is a fibrous-covered structure that rests posteriorly to the carotid bifurcation. The blood supply to carotid sinus is by the vasa vasorum vessels.
How is carotid sinus syndrome treated?
In this setting, cardiac pacing is probably the procedure of choice. In those patients, however, who have syncope or near-syncope associated with a hypersensitive carotid sinus and who have no evidence of a cardiac conduction defect, the treatment of choice is probably carotid sinus denervation.
Where is the carotid sinus syncope located?
In CSH, mechanical deformation of the carotid sinus (located at the bifurcation of the common carotid artery) leads to an exaggerated response with bradycardia or vasodilatation, resulting in hypotension, presyncope, or syncope.
What syncope means?
Syncope (SINK-a-pee) is another word for fainting or passing out. Someone is considered to have syncope if they become unconscious and go limp, then soon recover. For most people, syncope occurs once in a great while, if ever, and is not a sign of serious illness.
What stimulates carotid sinus?
The carotid sinus baroreceptor, innervated by the glossopharyngeal nerve (cranial nerve IX), is located in the adventitia of the carotid artery and is activated by stretching of the blood vessel wall. The physiological role of this mechanoreceptor is to detect, respond, and regulate the systemic blood pressure.
What is carotid sinus and carotid body?
Carotid Sinus. The carotid sinus is a baroreceptor that senses changes in systemic blood pressure and is located in the adventitia of the carotid bulb of the internal carotid artery. Due to its location the carotid sinus is an intimately related but distinct organ from the carotid body.
Can sinusitis cause syncope?
Signs and symptoms of sick sinus syndrome may include: Fatigue. Dizziness or lightheadedness. Fainting or near fainting.
What is the main cause of syncope?
Syncope is a temporary loss of consciousness usually related to insufficient blood flow to the brain. It’s also called fainting or “passing out.” It most often occurs when blood pressure is too low (hypotension) and the heart doesn’t pump enough oxygen to the brain.