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Can someone explain the answer and why?
1. 75y/o woman brough to ER semicomatose 24 hours after hitting the back of her head in a fall. No symptoms present after fall, but she developed blurred vision and weakness of left extremities 18 hours after fall. Examinatino shows left hemiparesis; right pupil is dilated and unresponsive to light. CT scan w/o contrast shows diffuse extra-axial hemorrhage over the right cerebral hemisphere. WHich of the following is most likely mechanism of her injury?
a. contusion of the brain
b. laceration of a cerebral bridging vein
c. laceration of small leptomeningeal blood vessel
d. laceratino of middle meningeal artery
e. shearing forces damaging white matter
(by the way, what is "extra-axial hemorrhage over right cerebral hemishphere mean?)
1. 75y/o woman brough to ER semicomatose 24 hours after hitting the back of her head in a fall. No symptoms present after fall, but she developed blurred vision and weakness of left extremities 18 hours after fall. Examinatino shows left hemiparesis; right pupil is dilated and unresponsive to light. CT scan w/o contrast shows diffuse extra-axial hemorrhage over the right cerebral hemisphere. WHich of the following is most likely mechanism of her injury?
a. contusion of the brain
b. laceration of a cerebral bridging vein
c. laceration of small leptomeningeal blood vessel
d. laceratino of middle meningeal artery
e. shearing forces damaging white matter
(by the way, what is "extra-axial hemorrhage over right cerebral hemishphere mean?)