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Blood Pressure
The pressure exerted by the circulating volume of blood on the walls of the arteries, the veins, and the chambers of the heart. Overall blood pressure is maintained by the complex interaction of the homeostatic mechanisms of the body moderated by the volume.

Blood Volume
The amount of blood circulating throughout the body in the vascular system.

Bolus
A dose of drug or fluid that is injected in the venous system all at once as opposed to over a gradual period of time.

BPG (Bypass Graft)
Aterial, vein or other conduit grafted beyond a vessel obstruction to create new flow through a diversionary channel.

Bradycardia
Slowness of the heartbeat, usually defined (by convention) as a rate under 60 BPM (synonym—brachycardia).

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