Fluke Biomedical MPS450 User Manual
Page 124
MPS450
Operators Manual
C-2
Table C-1. Glossary (cont.)
Term Definition
AV JUNCTION
A junction consisting of the
AV node
and the
bundle of His
.
Conducts the electrical impulse sent from the
SA node
from the
atria
into the
ventricles
.
AV NODE
Also called the atrioventricular node. Located in the right
atrium
near
the septum. Conducts the electrical impulse in the heart to the
bundle of His
, which passes it on to the left- and right-bundle
branches.
BAUD
A unit of measurement that denotes the number of discrete signal
elements, such as bits, that can be transmitted per second. Bits-per-
second (bps) means the number of binary digits transmitted in one
second.
BLOOD PRESSURE
The pressure of the blood within the arteries, primarily maintained by
contraction of the left
ventricle
.
BPM
Beats per minute. SEE
pulse
.
BUNDLE OF HIS
A collection of nerves (about 1 cm in length) that lies just below the
AV
node
in the heart. Part of the heart’s electrical conduction system.
With the AV node, forms the
AV junction
. Below the bundle, the
nerves divide into left and right branches.
COMPUTATIONAL
CONSTANT
Pertaining to cardiac output. Sometimes called calibration coefficient.
CARDIAC
Of, near, or pertaining to the heart.
CARDIOVASCULAR
Of, pertaining to, or involving the heart and the blood vessels.
CAPILLARY
One of the minute blood vessels that connect the
arteries
and veins.
GRAM
A metric unit of mass and weight, equal to one-thousandth of a
kilogram
, about 0.035 ounces.
HERTZ
A unit of frequency equal to one cycle per second. Used to measure
electrical current and light, especially ultraviolet radiation (as in
fluorescent light).
IMPEDANCE
A measure of the total opposition to current in a circuit.
INFRARED
Of, pertaining to, or being electromagnetic radiation having
wavelengths
greater than those of visible light and shorter than
those of microwaves.
JOULE
A unit of energy, equal to the work done when a current of
one
ampere
is passed through a
resistance
of one
ohm
for one
second.
KILOGRAM
The fundamental unit of mass in the International System, about
2.2046 pounds.
LCD
Liquid crystal display. A digital display consisting of a liquid crystal
material between sheets of glass that becomes readable in the
presence of an applied voltage.
METER
The fundamental unit of length, equivalent to 39.37 inches, in the
metric system.