Terms Flashcards
After load
The amount of resistance to ejection of blood from the ventricle.
Location of Apical pulse
Point of maximal impulse
Fifth intercostal space, left of the midclavicular line, caused by contraction of left ventricle.
Cardiac output
Amount of blood pumped by each ventricle in liters per minute.
Depolarization
Electrical activation of a cell caused by the influx of sodium into the cell while potassium exits the cell.
Ejection fraction
Percentage of the end diastolic blood volume ejected from the ventricle with each heartbeat.
Hypertension b/p values
= or >140/90
High blood pressure categories
Pre-hypertension: SBP: 120-139 / DBP: 80-89
STAGE 1 HTN: SBP: 140-159 / DBP: 90-99
STAGE 2 HTN: SBP ≥ 160 / DBP ≥ 100
Hypotensive
A decrease in b/p to less than 100/60 the COMPROMISES perfusion
normal heart sounds
Sounds produced when the valves close; normal heart sounds are S1 (atrioventricular valves) and S2 (semilunar valves).
opening snaps
abnormal diastolic sound generated during opening of a rigid atrioventricular valve leaflet
postural (orthostatic) hypotension:
a significant drop in blood pressure (20 mm Hg systolic or more) after an upright posture is assumed.
preload
degree of stretch of the cardiac muscle fibers at the end of diastole.
pulmonary vascular resistance:
resistance to blood flow out of the right ventricle created by the pulmonary circulatory system
pulse deficit:
the difference between the apical and radial pulse rates.
repolarization
return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell.