NUR 1175 Oxygenation and Perfusion

NUR 1175 Oxygenation and Perfusion
1. What is ventilation?
Answer
the process of moving gases into and out of the lungs
2. What is perfusion?
Answer
The ability of the cardiovascular system to pump oxygenat- ed blood to the tissues and return
deoxygenated blood to the lungs
3. Factors affecting oxygenation
Answer
1. physiological factors such as decreased oxygen carrying capacity; hypovolemia; decreased
inspired oxygen concentration; increased metabolic rate
2. conditions affecting chest wall movementsuch as pregnancy obesity, neuromus- cular
disease, trauma, CNS alterations
3. influences of chronic diseases
4. Causes of hypoventilation
Answer
1. obesity
2. opioids (suppress CNS)
3. structural (muscular dystrophy, other physical alterations, pregnancy)
5. What is hypoxia?
Answer
not enough oxygen reaching the tissues