Explanation:
- Acute SDH(Hyperdense on CT): <3 days
- Subacute SDH(Isodense on CT): 4-21 days
- Chronic SDH(Hypodense on CT): >21 days
Chronic SDH
- Chronic SDH: Collection of blood breakdown products that is more than 21 days old
- Chronic SDHs often occur in patients without a clear history of head trauma, as they may arise from minor trauma
- Alcoholics, the elderly, and patients on anticoagulation are at higher risk for developing chronic SDH
- Patients may present with headache, seizure, confusion, contralateral hemiparesis, or coma
Treatment
- A chronic SDH >1 cm or any symptomatic SDH should be surgically drained.
- Chronic SDH typically consists of a viscous fluid, with a texture and dark brown color reminiscent of motor oil.
- A simple burr hole can effectively drain most chronic SDHs.
Reference: Greenberg 9th Edition Chapter 55
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Explanation:
• Acute SDH(Hyperdense on CT): <3 days
• Subacute SDH(Isodense on CT): 4-21 days
• Chronic SDH(Hypodense on CT): >21 days
Chronic SDH
• Chronic SDH: Collection of blood breakdown products that is more than 21 days old
• Chronic SDHs often occur in patients without a clear history of head trauma, as they may arise from minor trauma
• Alcoholics, the elderly, and patients on anticoagulation are at higher risk for developing chronic SDH
• Patients may present with headache, seizure, confusion, contralateral hemiparesis, or coma
Treatment
• A chronic SDH >1 cm or any symptomatic SDH should be surgically drained.
• Chronic SDH typically consists of a viscous fluid, with a texture and dark brown color reminiscent of motor oil.
• A simple burr hole can effectively drain most chronic SDHs.
Reference: Greenberg 9th Edition Chapter 55
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