← Back to guidelines
Cardiology16 papers

Acute nontraumatic intracranial subdural hematoma

Last edited: 4/16/2026

Overview

Acute nontraumatic intracranial subdural hematoma (aSDH) is a serious neurological emergency characterized by bleeding between the dura mater and arachnoid mater, often leading to increased intracranial pressure and neurological deficits 1.

Diagnosis

  • Clinical Presentation: Altered mental status, focal neurological deficits, headache 1.
  • Imaging: CT scan is essential for diagnosis, showing crescent-shaped hyperdense collections over cerebral convexity 1.
  • Grading: Not explicitly detailed in the abstract, but clinical grading systems like the Hunt and Hess scale can be applied 1.
  • Management

  • Surgical Interventions: Emergency decompressive craniectomy (DC) and craniotomy (CO) are primary treatments for evacuation 1.
  • Timing: Procedures typically performed within 4 hours of hospital arrival 1.
  • Outcome: High in-hospital mortality observed regardless of the surgical procedure (DC vs CO) 1.
  • Special Populations

  • No Specific Details Provided: The abstracts do not provide specific guidance or outcomes related to pregnancy, pediatrics, elderly patients, or comorbidities 1.
  • Key Recommendations

  • Emergency Surgical Evacuation: Perform emergency decompressive craniectomy or craniotomy for acute subdural hematoma within 4 hours of presentation to manage intracranial pressure (Evidence: Moderate) 1.
  • No Clear Procedure Preference: There is no significant difference in mortality outcomes between decompressive craniectomy and craniotomy; choice may depend on surgeon preference and institutional expertise (Evidence: Moderate) 1.
  • High Mortality Acknowledgment: Recognize that despite timely surgical intervention, in-hospital mortality remains high for patients undergoing emergency procedures for acute subdural hematoma (Evidence: Moderate) 1.
  • References

    1 Ahmed N, Greenberg P, Shin S. Mortality Outcome of Emergency Decompressive Craniectomy and Craniotomy in the Management of Acute Subdural Hematoma: A National Data Analysis. The American surgeon 2021. link

    Original source

    1. [1]

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG