Background Ultrasound (US) has largely replaced contrast venography as the definitive
diagnostic test for deep vein thrombosis (DVT). We aimed to derive a definitive estimate of …

Background: Clinical assessment of suspected deep venous thrombosis (DVT) should be
based on systematically evaluated evidence. Purpose: To determine whether clinical …

This article has been corrected. The original version (PDF) is appended to this article as a
Supplement. Background: High-sensitivity assays for cardiac troponin T (hs-cTnT) are …

Background Noninvasive ventilation (continuous positive airway pressure [CPAP] or
noninvasive intermittent positive-pressure ventilation [NIPPV]) appears to be of benefit in the …

Objectives: Reconfiguration of emergency services could lead to patients with life-
threatening conditions travelling longer distances to hospital. Concerns have been raised …

Objectives To measure the effectiveness and cost effectiveness of providing care in a chest
pain observation unit compared with routine care for patients with acute, undifferentiated …

BACKGROUND: Because of possible adverse outcomes, many of the> 6 million annual
emergency department (ED) patients with suspected acute coronary syndromes (ACS) …

Objectives: To measure the predictive value and diagnostic performance of clinical features
used to diagnose coronary syndromes in patients presenting with acute, undifferentiated …

Objectives To evaluate the role of ambulance response times in improving survival for out-of-
hospital cardiac arrest (OHCA). Methods OHCAs were identified by sampling consecutive …

Magnetic resonance imaging (MRI) may be used to diagnose deep vein thrombosis (DVT) in
patients for whom ultrasound examination is inappropriate or unfeasible. We undertook a …