In patients with suspected pulmonary embolism, a model that uses clinical information provides pretest probability of embolism.
Management based on pretest probability and results of ventilation-perfusion scanning is safe.
Accuracy of Death Certificates for Coding Coronary Heart Disease as the Cause of Death D.M. Lloyd-Jones, D.O. Martin, M.G. Larson, and D. Levy Death certificates are widely used in epidemiologic and clinical investigations and for national statistics. This study found that coronary heart disease may be overrepresented as a cause of death on death certificates. The results of the genotyping test for a genetically determined enzyme, CYP2C19, seem to predict cure of Helicobacter pylori infection and peptic ulcer in patients who receive dual therapy with omeprazole and amoxicillin. Immunology M.T. O'Hollaren This Update discusses new guidelines for and advances in asthma therapy, the immune response in allergic rhinitis, the role of inhalant allergens in allergic rhinitis, associations between asthma and allergic rhinitis, and latex allergy. The Role of Venous Ultrasonography in the Diagnosis of Suspected Deep Venous Thrombosis and Pulmonary Embolism C. Kearon, J.S. Ginsberg, and J. Hirsh Venous ultrasonography is the most accurate noninvasive test for the diagnosis of deep venous thrombosis, but variations in the size, location, and prevalence of thrombi affect the accuracy and usefulness of this test.