NUR 325 Perfusion
- Define Perfusion
Answer the flow of blood through arteries and capillaries delivering nutrients and oxygen to cells
- Define Ischemia
Answer Lack of perfusion to the tissue
- Define Infarction
Answer Tissue death from sustained ischemia
- Define Anoxia
Answer lack of oxygen to tissue
- What two factors are required for optimal perfusion?
Answer -Working heart to pump blood
-Patent (unobstructed) vasculature
- Central perfusion is the force of blood movement generated by
?
Answer Cardiac output
- What is the formula for Cardiac Output?
Answer 1 / 3
Cardiac output = Stroke volume X Heart rate
- Define Stroke volume
Answer volume of blood ejected from the LV per beat
- Central perfusion requires what 3 things?
- Cardiac function
Answer
- Blood pressure
- Blood volume
- Tissue/Local perfusion if the volume of blood that flows to where?
Answer the target tissue
- Tissue/Local perfusion requires what 3 things?
- Patent blood vessels
Answer
- Hydrostatic pressure
- Capillary permeability
- What is the cause of impaired central perfusion?
Answer Inadequate cardiac output
- Reduced cardiac output leads to what?
Answer Less oxygenated blood getting to tissues so there is a SYSTEMIC EFFECT.
Ischemia Cell injury 2 / 3
Infarction (cell death)
- What is the cause of impaired tissue/local perfusion?
Answer Inadequate
-Vessel patency -Vessel permeability -Central perfusion
- Impaired tissue perfusion leads to ?
Answer reduced blood flow to the affected body tissue so there is a LOCALIZED EFFECT.
Ischemia Cell injury Infarction (cell death)
- Perfusion can occur to all individuals, but which populations are at the greatest risk?
Answer MMA
-Middle aged and older adults -Men -African Americans
- risk factors for impaired perfusion
- / 3
Answer