Development of clinical decision rule to exclude subarachnoid hemorrhage (SAH) for acute headache

Development of clinical decision rule to exclude subarachnoid hemorrhage (SAH) for acute headache - EMERALD SAH Rule

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000004871

Enrollment

1500

Registered

2011-01-16

Start date

2008-03-13

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Patients with acute headache

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: adult patients with a chief complaint of acute headache

Exclusion criteria

Exclusion criteria: 1) patients with headache caused by trauma, drugs or alcohol 2) patients who are unconscious at the beginning of assessment 3) patients with recurrent headache syndromes

Design outcomes

Primary

Measure	Time frame
Presence of subarachnoid hemorrhage in patient with acute headache The primary outcome: SAH is defined as any of the following: SAH on unenhanced computed tomography (CT) of the head; xanthochromia in cerebrospinal fluid; or bloody cerebrospinal fluid in the final tube sample at lumbar puncture.	—

Countries

Japan

Contacts

Public ContactKentaro Kobayashi

Center Hospital of the National Center for Global Health and Medicine Emergency medicine

baken1976@yahoo.co.jp03-3202-7181

Outcome results