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Recognition of subarachnoid hemorrhage
1Department of Emergency Medicine, Northeastern Ohio Universities College of Medicine, Akron City Hospital 44309.
Annals of Emergency Medicine
|November 1, 1989
Summary
Emergency physicians accurately diagnosed most spontaneous subarachnoid hemorrhages (SAH), but delays occurred in 15% of cases, often with headache and normal exams. Prompt diagnosis of SAH is critical.
Area of Science:
- Neurology
- Emergency Medicine
Background:
- Spontaneous subarachnoid hemorrhage (SAH) is a critical neurological emergency.
- Accurate and timely diagnosis in the emergency department (ED) is crucial for patient outcomes.
Purpose of the Study:
- To evaluate the diagnostic accuracy of emergency physicians for nontraumatic SAH.
- To analyze clinical presentations, diagnostic modalities, and factors contributing to diagnostic delays.
Main Methods:
- Retrospective review of 109 patients with confirmed nontraumatic SAH over five years.
- Analysis of patient history, neurological findings, cranial computed tomography (CT) scans, and lumbar punctures.
- Assessment of diagnostic accuracy and identification of reasons for delayed diagnosis.
Main Results:
- Headache (74%), nausea/vomiting (77%), and altered consciousness were common symptoms.
- Nonexertional activities preceded SAH more frequently than exertional events (57% vs 21%).
- Cranial CT demonstrated 95% sensitivity for SAH; overall physician diagnostic accuracy was 85%, with 15% experiencing delays, often with atypical presentations.
Conclusions:
- Emergency physicians achieve high diagnostic accuracy for SAH, but vigilance is needed for atypical cases.
- Prompt recognition and management of SAH, including atypical presentations and warning leaks, are essential.
- Further refinement of diagnostic strategies may improve early detection rates in the emergency setting.