Background There is much controversy about the use of computed tomography (CT) for
patients with minor head injury. We aimed to develop a highly sensitive clinical decision rule for …

ContextHigh levels of variation and inefficiency exist in current clinical practice regarding
use of cervical spine (C-spine) radiography in alert and stable trauma patients.ObjectiveTo …

Study objective: To develop decision rules that will predict fractures in patients with ankle
injuries, thereby assisting clinicians in being more selective in their use of radiography. Design: …

Background The Canadian C-Spine (cervical-spine) Rule (CCR) and the National Emergency
X-Radiography Utilization Study (NEXUS) Low-Risk Criteria (NLC) are decision rules to …

Objective. —To validate and refine previously derived clinical decision rules that aid the efficient
use of radiography in acute ankle injuries. Design. —Survey prospectively administered …

Objective. —To assess the impact on clinical practice of implementing the Ottawa ankle
rules. Design. —Nonrandomized, controlled trial with before-after and concurrent controls. …

ContextCurrent use of cranial computed tomography (CT) for minor head injury is increasing
rapidly, highly variable, and inefficient. The Canadian CT Head Rule (CCHR) and New …

Study objective: To derive a highly sensitive decision rule for the selective use of radiography
in acute knee injuries. Design: Prospectively administered survey. Setting: Emergency …

Background Coronary thrombosis and pulmonary thromboembolism are common causes of
cardiac arrest. We assessed whether the administration of tissue plasminogen activator (t-PA…

Objective To evaluate the effectiveness of an active strategy to implement the validated
Canadian C-Spine Rule into multiple emergency departments. Design Matched pair cluster …