adj. relating to the action of impulses in the *vagus nerve on the circulation. The vagus reduces the rate at which the heart beats, and so lowers its output.
The temporary loss of consciousness caused by an abrupt slowing of the heartbeat. This may happen following SHOCK, acute pain, fear, or stress. A common cause of fainting in normal people, a vasovagal attack may be a consequence of overstimulation of the VAGUS nerve which is involved in the control of breathing and the circulation.... vasovagal attack
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