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QUALITY MATERIALS!
Vital signs
are clinical measurements that include blood pressure, pulse, body temperature,
respiration, and oxygen saturation.
Are vital signs objective or subjective data?
objective data
Blood pressure (mm hg)
a measurement of the amount of pressure exerted by the blood within the circulatory
system.
systole
The contraction phase of the cardiac cycle. During this phase blood is driven into the
aorta and pulmonary arteries.
diastole
The relaxation phase of the cardiac cycle where the heart muscle is relaxed and the
chambers of the heart fill with blood.
cardiac output (CO)
The volume of blood ejected by the heart ventricles in one minute; calculated by
multiplying the stroke volume and pulse rate of the heart.
Stroke volume
Volume of blood ejected by the left ventricle during one contraction.
equations for cardiac output
CO=Stroke volume (SV) X heart rate (HR)
Viscosity
The resistance of a liquid to flow.
Peripheral vascular resistance
The total resistance to flow of blood in the vascular bed.
Contractillity
The force required to eject blood from the left ventricle.
preload
The blood remaining in the left ventricle at the end of diastole causing it to stretch.
sphygmomanometer
Instrument used to measure arterial blood pressure.
stethoscope
An instrument used to listen to sounds produced by the body.
Korotkoff sounds
A series sounds created by movement of blood through a partially compressed vessel
during a manual blood pressure assessment.
hypertension