vasovagal reflex


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Related to vasovagal reflex: vasovagal syncope, Vagovagal reflex

vasovagal reflex

a stimulation of the vagus nerve by reflex in which irritation of the larynx or the trachea results in slowing of the pulse rate.
References in periodicals archive ?
Blood-injury phobia, which is often linked with needle phobia,(3) probably often arises when a patient with a strong vasovagal reflex undergoes a needle procedure or has an accident that results in a vasovagal response.
Over the 4+ million years of human evolution, surely many genes controlling blood pressure, pulse, cardiac rhythm, and stress hormone release were selected for to create the vasovagal reflex.
Topical anesthesia of the autonomic sensory neural net at the needle site can be used to interrupt the vasovagal reflex at its origin so that the reflex is not triggered.
The etiology of needle phobia lies in an inherited vasovagal reflex of shock, triggered by needle puncture.
The etiology of needle phobia is rooted in an inherited vasovagal reflex that causes shock with needle puncture.
At least 23 reported deaths can reasonably be ascribed solely to needle phobia and its vasovagal reflex during needle procedures such as venipuncture, blood donation, arterial puncture, pleural tap, and intramuscular and subcutaneous injections.
In the author's experience with over 50 patients with needle phobia, and in all similar cases reported in the medical literature, those afflicted inevitably display symptoms of an autonomic vasovagal reflex whenever they undergo a needle procedure.
The vasovagal reflex in needle phobia may include virtually any type and combination of autonomic symptoms, eg, a clammy diaphoresis, pallor, nausea, respiratory disturbances, and various levels of unresponsiveness.