Abstract:
UNLABELLED:Deep vein thrombosis (DVT) is a common complication of paraplegia despite prophylactic anticoagulant therapy. The diagnosis relies primarily on ultrasonography or phlebography; these investigations are difficult, expensive and can be time-consuming in paraplegic patients. STUDY DESIGN:To evaluate the usefulness of coagulation activation markers in excluding a diagnosis of DVT, D-Dimers, thrombin-antithrombin complexes, prothrombin fragments (F1+2) and activated factor VIIa. OBJECTIVES:To improve the diagnosis of deep venous thrombosis in paraplegic patients. SETTING:This collaborative work was done at Raymond Poincaré Hospital, Garches, France. METHODS:To evaluate the usefulness of coagulation activation markers in excluding a diagnosis of DVT, D-Dimers (D-Di), thrombin-antithrombin (TAT) complexes, prothrombin fragments (F1+2) and activated factor VIIa (FVIIa), were determined in a prospective study of 67 consecutive patients with paraplegia or tetraplegia. Doppler ultrasonography and/or phlebography of the lower limbs and D-Di, TAT, F1+2 level determination were systematically done in each patient at admission to our rehabilitation unit. RESULTS:Despite prophylactic low molecular weight heparin therapy, six of the 67 patients developed DVT diagnosed by radiologic explorations. D-Di levels measured by a reference ELISA (Asserachrom D-Di, Diagnostica Stago) or a new rapid automated turbidimetric test (STA-Liatest D-Di) were greater than 500 ng/ml in all DVT patients and in 40 non-DVT patients, of whom most had urinary tract infections, osteomas, or pressure sores. D-Di values were normal in only 21/67 patients (31%). The negative predictive value of D-Di in our study was 100% since all DVT patients had D-Di values greater than 500 ng/ml. TAT and F1+2 levels were not correlated with D-Di levels but also had a negative predictive value of 100%. Comparison of D-Di levels obtained using the two tests showed that results of the reference ELISA were closely correlated to those of the new rapid automated turbidimetric. TAT, F1+2, and factor VIIa are not useful for measuring hypercoagulability in paraplegic or tetraplegic patients since no rapid tests for determining these parameters are available. CONCLUSION:D-Di levels determined using an ELISA or a new rapid automated turbidimetric test have a good negative predictive value for DVT in paraplegic or tetraplegic patients and may reduce the need for Doppler ultrasonography and/or phlebography by 31%.
journal_name
Spinal Cordjournal_title
Spinal cordauthors
Roussi J,Bentolila S,Boudaoud L,Casadevall N,Vallée C,Carlier R,Lortat-Jacob S,Dizien O,Bussel Bdoi
10.1038/sj.sc.3100891subject
Has Abstractpub_date
1999-08-01 00:00:00pages
548-52issue
8eissn
1362-4393issn
1476-5624journal_volume
37pub_type
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