NUR 1175 Oxygenation and Perfusion
- What is ventilation?
Answer
the process of moving gases into and out of the lungs
- 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
- Factors affecting oxygenation
Answer
- physiological factors such as decreased oxygen carrying capacity; hypovolemia; decreased
inspired oxygen concentration; increased metabolic rate
- conditions affecting chest wall movement such as pregnancy obesity, neuromus- cular
- influences of chronic diseases
disease, trauma, CNS alterations
- Causes of hypoventilation
Answer
- obesity
- opioids (suppress CNS)
- structural (muscular dystrophy, other physical alterations, pregnancy) 1 / 2
- What is hypoxia?
Answer
not enough oxygen reaching the tissues
- What is hypoventilation?
Answer
Alveolar ventilation does not meet the body's oxygen demand or to eliminate sufficient carbon dioxide
- What is hyperventilation?
Answer
ventilation that exceeds what is needed. to eliminate carbon dioxide
- What causes hypoxia?
Answer
- vasoconstriction from low blood pressure
- Vasoconstriction secondary to nicotine
- Peripheral vascular disease
- Causes of Hyperventilation
Answer
- pain
- increased exertion
- / 2