The Virtual PICU is building an on-line network of pediatric critical care units. A common database is the first step. Video courtesy of DogByte Productions , Portland, Oregon . A subdural hematoma is usually venous in origin, with the bridging veins being a common source.
Bridging veins are more susceptible to tearing when there is pre-existent cortical atrophy.
Occasionally the source of a subdural hematoma is a cortical artery. Outcome is reasonable if the hematoma is removed early, but subdural hematomata in the unconscious patient are often associated with severe parenchymal injury and therefore a poor outcome. This video depicts the resection of a subdural hematoma. The dura is bluish, discolored, and tense. Pressure on cortex is relieved upon resection of dura.