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Diagnosis Economics Harm/ aetiology Prognosis Therapy

Deep vein thrombosis venography had side effects and may not be possible. Level of evidence 4 Expiry Date September 2003 Deep vein thrombosis a negative venogram safely excluded DVT. Level of evidence 4 Expiry Date September 2003 Dyspnoea clinical examination may help to determine cause. Level of evidence 1a Expiry Date Pulmonary embolism ventilation-perfusion scans could help diagnose PE. Level of evidence 1b Expiry Date October 2003 Pulmonary embolism d-dimer may rule it out in low-risk cases Level of evidence 1b Expiry Date October 2003 Pulmonary embolism clinical findings were not very helpful. Level of evidence 4 Expiry Date October 2003 Pulmonary embolism arterial blood gases were unhelpful. Level of evidence 1b Expiry Date Pulmonary embolism compression ultrasound could help diagnose PE. Level of evidence 1b Expiry Date October 2003 Pulmonary embolism a clinical prediction rule is useful in diagnosis. Level of evidence 1a Expiry Date September 2003 Pulmonary embolism MRI angiography could diagnose and exclude PE. Level of evidence 2b Expiry Date September 2003 Pulmonary embolism capnogram wave area can help diagnose PE. Level of evidence 1b Expiry Date September 2003 Pulmonary embolism clinical findings were not very helpful for diagnosis. Level of evidence 1b Expiry Date October 2003 Pulmonary embolism helical CT could not exclude it. Level of evidence 4 Expiry Date October 2003 Pulmonary embolism non-diagnostic ventilation-perfusion scans: further investigation was required. Level of evidence 4 Expiry Date September 2003 Pulmonary embolism ventilation-perfusion scanning was not affected by pre-existing heart-lung disease. Level of evidence 1b Expiry Date October 2003 Pulmonary embolism pulmonary angiogram was a good reference standard. Level of evidence 4 Expiry Date October 2003 Venous thromboembolism some d-dimer tests may rule out PE and DVT. Level of evidence 1a Expiry Date September 2003