We aim to externally validate the Ottawa subarachnoid hemorrhage (OSAH) clinical decision
rule. This rule identifies patients with acute nontraumatic headache who require further …

Importance Three clinical decision rules were previously derived to identify patients with
headache requiring investigations to rule out subarachnoid hemorrhage. Objective To …

Background Subarachnoid hemorrhage (SAH) is a serious cause of headaches. The Ottawa
subarachnoid hemorrhage (OSAH) rule helps identify SAH in patients with acute …

Objective The Ottawa subarachnoid haemorrhage (SAH) rule suggests that alert patients
older than 15 years with a severe nontraumatic headache reaching maximum intensity …

Introduction. Acute headache is among the commonest presenting complaints to emergency
departments. While it is estimated that only 1–3% result from subarachnoid haemorrhage …

BACKGROUND: We previously derived the Ottawa Subarachnoid Hemorrhage Rule to
identify subarachnoid hemorrhage (SAH) in patients with acute headache. Our objective …

Objective To ensure good outcomes in the management of subarachnoid haemorrhage
(SAH), accurate prediction is crucial for initial assessment of patients presenting with acute …

Objectives: There is little evidence guiding physicians in the evaluation of acute headache to
rule out nontraumatic subarachnoid hemorrhage (SAH). The authors assessed emergency …

Objective: Patients with acute headache often undergo computed tomography (CT) followed
by a lumbar puncture to rule out subarachnoid hemorrhage. Our international study …

The American College of Emergency Physicians (ACEP) published guidelines in July 2019
on the diagnosis and management of acute nontraumatic headaches in the emergency …