Perfusion Flashcards
Ischemia
deprived of O2 (reversible)
Infarction
Tissue death as a result of insufficient O2 (irreversible)
Anoxia
total depletion of O2
Hypoxia
low O2 in tissues
Hypoxemia
Low O2 in blood
cyanosis
bluish discoloration of the skin from poor circulation or inadequate oxygen of the blood
pallor
pale colored skin
duskiness
shadowed color. not quite cyanosis
blood pressure
force of blood pushing against the walls of the arteries
systole
1/3 cycle. Ventricular contraction
diastole
2/3 cycle. Atrial filling/ ventricular relaxation
preload
tension at the end of diastole
afterload
force ventricles have to overcome to eject blood volume
cardiac output
HR X SV
Stroke volume
EDV - ESV
central perfusion
passage of blood to major organs
peripheral perfusion
passage of blood to vascular tissue beds
Risk factors for poor perfusion
obesity physical inactivity smoking age gender race/ethnicity
risk factors for HTN
family history of HTN
smoking
kidney disease
physiological affects of decreased perfusion in CNS
impaired orientation fatigue irritability visual disturbances headache can lead to: MI stroke shock heart failure
physiological affects of impaired perfusion on respiratory system
sob wob increased rr abnormal lung sounds dyspnea retraction low O2 sat abnormal breathing pattern
physiological affects of impaired perfusion on cardiac system
pain increased/decreased HR cardiomegaly abnormal BP asymmetrical pulses JVD (pressure backup)
physiological affects of impaired perfusion on GI
hypoactive bowl sounds
poor peristalsis
pain
physiological affects of impaired perfusion on GU
dark urine oliguria erectile dysfunction fertility issues problems with menstrual cycle
physiological affects of impaired perfusion on integumentary system
discoloration of skin turgor delayed cap refill cold skin change in pulse nail clubbing decrease in wound healing time hair growth pattern
