Prognosis after acute subdural or epidural haemorrhage

Area of Science:

• Neurosurgery
• Trauma Surgery
• Emergency Medicine

Background:

• Acute subdural hematoma (SDH) and epidural hematoma (EDH) are severe consequences of closed head injuries.
• Understanding factors influencing patient outcomes is critical for effective clinical management.
• Previous studies highlight the importance of prompt intervention in traumatic brain injuries.

Purpose of the Study:

• To evaluate the mortality rates and clinical recovery grades in patients with acute SDH and EDH.
• To identify key factors influencing outcomes following surgical decompression for these conditions.
• To analyze the impact of the time interval between coma onset and surgical intervention on patient prognosis.

Main Methods:

• Retrospective analysis of 171 patients with acute SDH (111) or EDH (60) treated between 1978-1985.
• Data collected included patient demographics, injury details, preoperative state of consciousness, associated brain lesions, and time to surgical decompression.
• Outcomes assessed were overall mortality and clinical recovery (full recovery or minimal neurological deficit).

Main Results:

• Overall mortality was 57% for acute SDH and 25% for acute EDH.
• Good recovery rates were 25% for SDH and 58% for EDH.
• Preoperative consciousness, associated brain lesions, and time to decompression significantly impacted outcomes. For SDH, mortality rose from 47% to 80% when decompression exceeded two hours. For EDH, mortality increased from 17% to 65% with delays over two hours.

Conclusions:

• The time interval between coma onset and surgical decompression is a critical determinant of survival and recovery in acute SDH and EDH.
• Prompt surgical intervention, particularly within two hours, is associated with significantly better outcomes.
• While age and other injuries are secondary, preoperative state of consciousness and brain lesions remain paramount factors.