Final answer:
Hypoxia and hypotension are common causes of secondary brain injury. Both conditions can result in cell death and severe impairment of brain function.
Step-by-step explanation:
Hypoxia and hypotension are two common causes of secondary brain injury. Hypoxia refers to a decreased supply of oxygen to the brain, which can result from conditions like stroke or cardiac arrest. Hypotension, on the other hand, refers to low blood pressure, which can reduce the blood flow to the brain. Both hypoxia and hypotension can lead to cell death and severe impairment of brain function.