Raises question of need for anticoagulation in

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Raises question of need for anticoagulation in isolated calf DVT. 188 Diagnostic ultrasound Ultrasound of the deep venous system
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of emergency physicians with heterogeneous sonography experience [ 21 ]. In this study, each physician underwent a mere 10-minute session on DVT assessment prior to enrolling patients. Thus, the limits on variables such as machine capability and operator experience remain ripe for study. References 1. Anderson FA, Wheeler HB, Goldberg RJ, et al. A population-based perspective of the hospital incidence and case-fatality rates of deep vein thrombosis and pulmonary embolism. The Worcester DVT Study. Arch Int Med 1991; 151 : 933–8. 2. Gillum RF. Pulmonary embolism and thrombophlebitis in the United States, 1970–1985. Am Heart J 1987; 114 : 1262–4. 3. Lensing AW, Doris CI, McGrath FP, et al. A comparison of compression ultrasound with color Doppler ultrasound for the diagnosis of symptom- less postoperative deep vein thrombosis. Arch Intern Med 1997; 157 : 765–8. 4. Lensing AW, Prandoni P, Brandjes D, et al. Detection of deep vein throm- bosis by real-time B-mode ultrasonography. N Engl J Med 1989; 320 : 342–5. 5. Poppiti R, Papanicolaou G, Perese S, Weaver FA. Limited B-mode venous imaging versus complete color-flow duplex venous scanning for detection of proximal deep venous thrombosis. J Vasc Surg 1995; 22 : 553–7. 6. Frederick MG, Hertzberg BS, Kliewer MA, et al. Can the US examination for lower extremity deep vein thrombosis be abbreviated? A prospective study of 755 examinations. Radiology 1996; 199 : 45–7. 7. Birdwell BG, Raskob GE, Whitsett TL, et al. The clinical validity of normal compression ultrasonography in outpatients suspected of having deep venous thrombosis. Ann Intern Med 1998; 128 : 1–7. 8. Trottier SJ, Todi S, Veremakis C. Validation of an inexpensive B-mode ultrasound device for detection of deep vein thrombosis. Chest 1996; 110 : 1547–50. 9. Heijboer H, Buller HR, Lensing A, et al. A comparison of real-time compression ultrasonography with impedance plethysmography for the diagnosis of deep vein thrombosis in symptomatic outpatients. N Engl J Med 1993; 329 : 1365–9. 10. Blaivas M, Lambert MJ, Harwood RA, Wood JP, Konicki J. Lower- extremity Doppler for deep venous thrombosis: can emergency physicians be accurate and fast? Acad Emerg Med 2000; 7 : 120–6. 11. Cogo A, Lensing AW, Koopman MM, et al. Compression ultrasono- graphy for diagnostic management of patients with clinically suspected deep vein thrombosis: prospective cohort study. BMJ 1998; 316 : 17–20. 12. Frazee BW, Snoey ER, Levitt A. Emergency department compression ultra- sound to diagnose proximal deep vein thrombosis. J Emerg Med 2001; 20 : 107–12. 13. Jang T, Docherty M, Aubin C, Polites G. Resident-performed compression ultrasonography for the detection of proximal deep vein thrombosis: fast and accurate. Acad Emerg Med 2004; 11 : 319–22. Diagnostic ultrasound 189 Ultrasound of the deep venous system
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14. Theodoro D, Blaivas M, Duggal S, Snyder G, Lucas M. Real-time B-mode ultrasound in the ED saves time in the diagnosis of deep vein thrombosis (DVT). Am J Emerg Med 2004; 22 : 197–200.
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