Cardiovascular Flashcards
Perfusion
passage of fluid through the circulatory system or lymphatic system to an organ or tissue
what side of the heart receives deoxygenated blood
right side
Process of blood through heart
deoxygenated blood enters the right atrium –> moves to right ventricle –> pushed into pulmonary arteries to the lungs –> after receiving oxygen blood enters pulmonary veins –> left atrium –> left ventricle –> aorta –> body
cardiac output
amount of blood heart pumps every minute
cardiac output equation
cardiac output = stroke volume (ml/beat) x heart rate (beats/min)
stoke volume
amount of blood pumped by a ventricle with each beat
preload
amount the ventricles stretch at the end of diastole
- relaxation/filling phase
once the ventricles have filled
afterload
pressure the ventricles must work against in order to get valves open so blood can leave the ventricles to go to lungs or body
ejection fraction
the % of blood pumped out of left ventricle with each contraction
stroke volume / end diastolic volume x 100 =%
normal = > 50%
pulse pressure
difference between systolic and diastolic BP
EX. BP = 120/80 –> 120-80 = 40
CPR
if person has no pulse and no breathing start 30 compressions to 2 breaths
2 inches deep
100-120 compressions per minute
hypertension
high blood pressure normal is < 120/80 elevated: 120 / < 80 Hypertension stage 1: 130-139 / OR 80-89 Hypertension stage 2: > 140 / OR > 90 Crisis: > 180/ AND/OR > 120
Hypotension
when systolic blood pressure is < 90 mm/hg
s/s: pallor, skin mottling, clamminess, blurred vision, lightheadedness
consider increasing salt intake, hydrate
orthostatic hypotension
standing up causes blood pressure to drop
can cause falls
- reduce saturated and trans fat
- increase in complex carbohydrates and fiber
VTE
obstruction of a blood vessel by a blood clot that has become dislodged from another site in the circulation
