In strangulation research, which statement is true regarding brain oxygen deprivation?

In strangulation research, which statement is true regarding brain oxygen deprivation?

• A. Strangulation always leaves visible injuries
• B. Oxygen deprivation has no effect on brain function
• C. Brain cells immediately begin dying
• D. Loss of consciousness is not associated with strangulation

Answer: (C)

When strangulation disrupts blood flow, the brain is deprived of oxygen almost at once. Neurons are extremely sensitive to oxygen loss, so dysfunction begins within seconds and, without oxygen restored promptly, brain cells can begin dying quickly. This rapid onset of cellular injury is why the statement about brain cells beginning to die is the best way to describe what happens to brain tissue under strangulation. The other ideas aren’t accurate: external injuries aren’t always present; oxygen deprivation does impair brain function; and loss of consciousness is commonly associated with strangulation because the brain isn’t getting enough oxygen.

When strangulation disrupts blood flow, the brain is deprived of oxygen almost at once. Neurons are extremely sensitive to oxygen loss, so dysfunction begins within seconds and, without oxygen restored promptly, brain cells can begin dying quickly. This rapid onset of cellular injury is why the statement about brain cells beginning to die is the best way to describe what happens to brain tissue under strangulation. The other ideas aren’t accurate: external injuries aren’t always present; oxygen deprivation does impair brain function; and loss of consciousness is commonly associated with strangulation because the brain isn’t getting enough oxygen.