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.
What does a carotid massage do to you?
Carotid sinus massage (CSM) is performed to terminate some supraventricular tachycardias (SVTs), such as AV node reentry and AV reentry SVTs. It may also be useful for sinoatrial (SA) reentrant SVT. CSM can be helpful to diagnose the atrial rhythm during a tachycardia by producing AV block.
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.
What nerve does carotid massage stimulate?
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 happens to heart rate during carotid massage?
Mechanical stimulation of the carotid body by massage normally causes only a small fall in heart rate and in blood pressure.
How do you do carotid massage?
Carotid Massage: This technique is performed with the patient’s neck in an extended position, the head turned away from the side being massaged. Only one side should be massaged at a time. Pressure is applied underneath the angle of the jaw in a gentle circular motion for about 10 seconds.
Is carotid massage a vagal maneuver?
In addition to these, your doctor may sometimes try another vagal maneuver (called carotid sinus massage) in the emergency room to help slow your heart rate. This technique should only be performed by a doctor.
When should you not do carotid massage?
Absolute contraindications to carotid sinus massage include myocardial infarction, transient ischemic attack or stroke within the preceding three months. A history of ventricular fibrillation or tachycardia, or a previous adverse reaction to carotid sinus massage are also absolute contraindications.
How would external stimulation of the carotid artery such as carotid massage affect the heart rate?
When external pressure is placed on the carotid sinus it automatically reduces your heart rate, normally this is only by a small amount. In some people, though, the carotid sinus overreacts to such pressure causing their heart rate to slow down or their blood pressure to drop a significant amount.
What does the carotid nerve do?
It carries impulses from the baroreceptors in the carotid sinus to the vasomotor center in the brainstem (to help maintain a more consistent blood pressure) and from chemoreceptors in the carotid body (mainly monitoring blood gas PaO2 and PaCO2 levels).
What does the Valsalva maneuver do?
The Valsalva maneuver is a breathing method that may slow your heart when it’s beating too fast. To do it, you breathe out strongly through your mouth while holding your nose tightly closed. This creates a forceful strain that can trigger your heart to react and go back into normal rhythm.
What Innervates carotid?
Innervation. The carotid sinus nerve, which is a branch of the glossopharyngeal nerve (cranial nerve IX), provides the sensory innervation to the carotid body.
Can nurses perform carotid massage?
04 In reference to agenda item 3a, it is within the realm of nursing practice for a registered nurse to perform carotid massage within the presence of the physician, in an I.C.U. or telemetry setting, or in the absence of the physician in either setting, provided the registered nurse has knowledge, preparation and …
Is Valsalva a vagal maneuver?
Common vagal maneuvers include carotid sinus massage (CSM), Valsalva maneuver (VM), and diving reflex.
Can the heart be massaged?
Although the heart cannot be massaged directly, it can benefit from the effects of the muscles in your body relaxing. A relaxed heart provides numerous health benefits including lower blood pressure.