What causes carotid sinus hypersensitivity?

CSH tends to be observed mainly in older individuals (predominantly males) who have atherosclerotic vascular disease. However, CSH may also be observed in individuals who have acquired abnormalities of the structure of the neck (eg, prior neck surgery and/or irradiation) or tumors in the region of the carotid sinuses.

What is carotid sinus syndrome symptoms?

Among those who are symptomatic, the following symptoms and signs could be observed in clinical settings: Recurrent dizziness, near-syncope. Recurrent syncope. Nonaccidental, unexplained falls. Symptoms produced by head turning or wearing garments with tight-fitting collars.

How is carotid sinus hypersensitivity diagnosed?

According to the current European Society of Cardiology guidelines, CSH is diagnosed when carotid sinus massage elicits ≥3 s asystole, a fall in systolic blood pressure of ≥50 mmHg, or both, with symptoms.

What is carotid sinus dysfunction?

Carotid sinus syndrome (CSS) is a disease of the autonomic nervous system presenting with syncope, especially in older males who often have cardiovascular disease. The aetiology is unknown and epidemiological data is limited.

Is carotid sinus hypersensitivity serious?

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 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.

What are the causes of sick sinus syndrome?

What causes sick sinus syndrome?

• Coronary artery disease.
• Prior heart attack.
• Atrial fibrillation.
• Heart failure or cardiomyopathy.
• Taking certain medicines such as beta blockers, calcium channel blockers, digoxin, and antiarrhythmics.
• Severe hypothyroidism.

What happens when you massage the carotid sinus?

A normal response to carotid sinus massage is a transient decrease in the sinus rate and a slowing of atrioventricular nodal conduction. Carotid sinus massage may also induce a decrease in the amplitude of the P wave.

How common is carotid sinus hypersensitivity?

The worldwide prevalence of CSH is near 30% of unexplained syncope in elderly, and 14% of nursing home residents, it is worthy to say that there is an overlap between CSH and vasovagal syncope, orthostatic hypotension, and other causes of syncope, this makes a margin of error estimating the incidence rate of each …

Can you live a long life with sick sinus syndrome?

Patients with sick sinus syndrome have a relatively poor prognosis, with 5-year survival rates in the range of 47-69%. However, whether this mortality rate is due to factors intrinsic to the sinus node itself or the concomitant heart disease is unclear.

What are the signs and symptoms of sick sinus syndrome?

Signs and symptoms of sick sinus syndrome may include:

• A sensation of rapid, fluttering heartbeats (palpitations)
• Chest pain or discomfort.
• Confusion.
• Dizziness or lightheadedness.
• Fainting or near fainting.
• Fatigue.
• Shortness of breath.
• Slower pulse (bradycardia)

Can you do carotid sinus massage on yourself?

The carotid artery carries blood to the brain, and an incorrectly performed CSM can cause serious health repercussions, especially in elderly patients. Do not perform this maneuver on yourself or another person unless you are a physician.