• J Emerg Med · Jun 2015

    Case Reports

    The Unlikely Presence of Deep Vein Thrombosis in a Patient With Low Pretest Probability and a Negative D-Dimer: A Case Report.

    • Shaun C Ramsey and Patrick M Flaherty.
    • McLaren Medical Center-Macomb, Mount Clemens, Michigan.
    • J Emerg Med. 2015 Jun 1;48(6):671-4.

    BackgroundDeep vein thrombosis (DVT) is commonly encountered in the emergency department. Clinical models, such as the Wells criteria, allow physicians to estimate the probability of DVT in a patient. Current literature suggests a low pretest probability combined with a negative D-dimer laboratory study rules out DVT approximately 99% of the time.Case ReportThis case discusses a 37-year-old male patient who had a low pretest probability and a negative D-dimer, but was found to have a DVT on Doppler ultrasound. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: The astute emergency physician must not discount clinical suspicion in order to decide when radiographic imaging is warranted for a possible venous thromboembolism. New adjuncts, such as bedside ultrasonography, can also be implemented to further risk stratify patients, potentially decreasing morbidity and mortality associated with DVT.Copyright © 2015 Elsevier Inc. All rights reserved.

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