tachycardia

She’ll also consult with a therapist familiar with postural tachycardia syndrome, a condition that causes her heart to race when she stands up.

I afterwards had periodical attacks of intermittence but never any tachycardia, at least none that lasted more than a few seconds.

But, as I rose, I suddenly felt acute pain along the sternum; at the same time began a strong crisis of tachycardia.

In tachycardia there is an irritation of the accelerator nerves to the heart, in brachycardia of the inhibitory nerves.

Bradycardia or abnormal slowness of the heart-beat, is the converse of tachycardia.

In the condition known as paroxysmal tachycardia there appears to be no adequate explanation for its onset.