What causes carotid sinus syncope?

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 causes situational syncope?

Situational syncope is caused by a reflex of the involuntary nervous system called the vasovagal reaction. The vasovagal reaction leads the heart to slow down (bradycardia), and at the same time it leads the nerves that serve the blood vessels in the legs to permit those vessels to dilate (widen).

What is the most common cause of syncope?

Vasovagal syncope is the most common cause of fainting. It happens when the blood vessels open too wide and/or the heartbeat slows, causing a temporary lack of blood flow to the brain. It’s generally not a dangerous condition.

What happens when carotid sinus is pressed?

Carotid sinus hypersensitivity is an exaggerated response to pressure applied to the carotid sinus located in the carotid bifurcation, resulting in bradycardia, vasodilation, and hypotension. This response is manifested clinically as syncope or presyncope and can cause fatal consequences.

How can you tell the difference between seizure and syncope?

Identifiable triggers are associated with syncope and seizures tend to have a longer duration than syncope and are followed by postictal confusion and significant fatigue, although brief periods of confusion have been reported with convulsive syncope.

What is the difference between syncope and vertigo?

Answer :Syncope is just another word for fainting from any cause, and usually means a problem with the heart. People can feel dizzy from a lot of different reasons, including vertigo, which is usually a problem with the ears, or other causes of dizziness that have to do with the nerves.

What happens if you massage your carotid artery?

In some people the carotid sinus becomes over-sensitive which can cause the blood pressure to drop or the heart rate to slow when it is massaged. This can result in dizziness, falls or faints.

How can the carotid sinus cause sudden death?

Carotid sinus reflex death is a potential etiology of sudden death in which manual stimulation of the carotid sinus allegedly causes strong glossopharyngeal nerve (Vagus nerve is for aortic arch baroreceptors) impulses leading to terminal cardiac arrest.

What are symptoms of carotid sinus syndrome?

Symptoms of Carotid Sinus Hypersensitivity or Carotid Sinus Syndrome. Some Symptoms of Carotid Sinus Hypersensitivity or Carotid Sinus Syndrome Are As Follows: Frequent dizziness episodes. Hypotension. Loss of muscle tone. Excessive scarring in neck area.

What is carotid sinus pressure?

The carotid sinus is a slightly enlarged area in the carotid artery where it divides into the internal and external carotids. Within it are sensitive areas called baroreceptors. These baroreceptors respond to pressure and when stimulated can cause reduced blood pressure, vasodilation , and can slow the heartbeat.

What is carotid sinus stimulation?

Stimulation of baroreceptors at the carotid sinus can be used to treat resistant hypertension via activation of the baroreflex. A pacemaker-like device can be implanted to electrically stimulate the receptors chronically, which is found to lower blood pressure by 15-25 mmHg.