
<ns0:uwmetadata xmlns:ns0="http://phaidra.univie.ac.at/XML/metadata/V1.0" xmlns:ns1="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0" xmlns:ns10="http://phaidra.univie.ac.at/XML/metadata/provenience/V1.0" xmlns:ns11="http://phaidra.univie.ac.at/XML/metadata/provenience/V1.0/entity" xmlns:ns12="http://phaidra.univie.ac.at/XML/metadata/digitalbook/V1.0" xmlns:ns13="http://phaidra.univie.ac.at/XML/metadata/etheses/V1.0" xmlns:ns2="http://phaidra.univie.ac.at/XML/metadata/extended/V1.0" xmlns:ns3="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/entity" xmlns:ns4="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/requirement" xmlns:ns5="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/educational" xmlns:ns6="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/annotation" xmlns:ns7="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/classification" xmlns:ns8="http://phaidra.univie.ac.at/XML/metadata/lom/V1.0/organization" xmlns:ns9="http://phaidra.univie.ac.at/XML/metadata/histkult/V1.0">
  <ns1:general>
    <ns1:identifier>o:1285</ns1:identifier>
    <ns1:title language="sr">Efekti direktnih oralnih antikoagulanasa na globalnu hemostazu kod pacijenata sa atrijalnom fibrilacijom</ns1:title>
    <ns2:alt_title language="sr">Effects of direct oral anticoaculants on global hemostasis in patients with atrial fibrillation : doctoral dissertation</ns2:alt_title>
    <ns1:language>sr</ns1:language>
    <ns1:description language="sr">Uvod: Direktni oralni antikoagulansi (DOAK) se koriste za prevenciju moždanog
udara kod pacijenata sa nevalvularnom atrijalnom fibrilacijom (AF).
Cilj:Ispitati efekte dve standardne doze rivaroksabana i dabigatrana na standardne rutinske i globalne hemostatske testove kod pacijenata sa AF i uporediti rezultate
ovih metoda sa rezultatima tečne hromatografije u kombinaciji sa masenom
spektrometrijom.
Materijal i metode: Istraživanje je obuhvatilo 52 pacijenta koji su bili na
terapiji rivaroksabanom (15/20 mg), 50 pacijenata na terapiji dabigatranom (110/150
mg) i 70 zdravih ispitanika. Ispitana su tri globalna hemostatska testa: endogeni
trombinski potencijal (ETR), kalibrisana automatizovana trombografija (SAT) i
ukupni hemostatski potencijal (OHP).
Rezultati: Oba DOAK su dovela do smanjenja ETP dok je OHP bio umanjen samo nakon
terapije dabigaranom. Jaka korelacija je primećena između ETP parametara i
koncentracije rivaroksabana (ETP, r=-0,51; c-max, r=-0,85; t-lag, r=0,83; t-max, r=0,66)
kao i koncentracije dabigatrana u plazmi (ETP, r=-0,75; c-max, r=-0,74; t-lag, r=0,73; tmax, r=0,52). Analizom koncentracije dabigatrana ispod 50 ng/ml pokazano je da ETP
parametar ima AUC-ROC vrednost od 0,879. Terapija dabigatranom je paradoksalno
povećala vrednosti parametara AUC i peak dok je terapija rivaroksabanom doprinela
smanjenju peak vrednosti.
Zaključak: Na osnovu dobijenih rezultata možemo zaključiti da je CAT test
nedovoljno dobar za utvrđivanje efekta terapije dabigatranom i nedovoljno senzitivan kod terapije rivaroksabanom. ETP metod predstavlja potencijalno odgovarajući test za određivanje globalnog hemostatskog kapaciteta kod oba DOAK. Uloga OHP testa se mora ispitati u dodatnim istraživanjima.</ns1:description>
    <ns1:description language="en">Introduction: Direct oral anticoagulants (DOAC) are used for prevention of stroke in patients with non valvular atrial fibrillation (AF).
Aim: Еvaluation the effects of two standard doses of rivaroxaban and dabigatran on standard routine and global hemostatic assays in patients with AF and comparison of these methods to
results of liquid chromatography-tandem mass spectrometry.
Material and methods: The study included 52 patients treated with rivaroxaban (15/20 mg),
50 on dabigatran (110/150 mg), and 70 healthy individuals. Determination of three global
hemostatic assays, namely endogenous thrombin potential (ETP), calibrated automated
thrombogram (CAT) and overall hemostasis potential (OHP) was performed.
Results: Both DOACs reduced ETP while OHP was diminished only by dabigatran. Strong
correlations were noticed between ETP parameters and the plasma concentrations of
rivaroxaban (ETP, r=-0.51; c-max, r=-0.85; t-lag, r=0.83; t-max, r=0.66) as well as with
plasma concentration of dabigatran (ETP, r=-0.75; c-max, r=-0.74; t-lag, r=0.73; t-max,
r=0.52). Analysis of dabigatran concentrations under 50 ng/ml showed that ETP parameter
has AUC-ROC value of 0.879. Dabigatran treatment paradoxically increased AUC and peak
values while rivaroxaban decreased peak values.
Conclusions: Based on our results we may conclude that the CAT assay is inappropriate for
estimation of dabigatran effects and is not fully sensitive as regards rivaroxaban. The ETP
assay can potentially be the appropriate method for estimation of global hemostatic capacity
as regards both DOACs. The role of OHP needs to be confirmed in additional studies.</ns1:description>
    <ns1:description language="sr"></ns1:description>
    <ns2:identifiers>
      <ns2:identifier>ID=24163081 ; D-3364</ns2:identifier>
    </ns2:identifiers>
    <ns2:identifiers>
      <ns2:resource>91552101</ns2:resource>
      <ns2:identifier>7755</ns2:identifier>
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    <ns2:identifiers>
      <ns2:resource>91552100</ns2:resource>
      <ns2:identifier>24163081</ns2:identifier>
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  <ns1:lifecycle>
    <ns1:upload_date>2020-11-13T09:23:05.053Z</ns1:upload_date>
    <ns1:status>45</ns1:status>
    <ns2:peer_reviewed>no</ns2:peer_reviewed>
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      <ns1:role>46</ns1:role>
      <ns1:ext_role>komentor</ns1:ext_role>
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        <ns3:firstname> Anica, 1992-, 33481063</ns3:firstname>
        <ns3:lastname>Petković</ns3:lastname>
      </ns1:entity>
      <ns1:date>2020</ns1:date>
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      <ns1:role>63</ns1:role>
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        <ns3:firstname> Jovan, 1969-, 59430921</ns3:firstname>
        <ns3:lastname>Antović</ns3:lastname>
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      <ns1:date>2020</ns1:date>
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        <ns3:firstname> Vladimir, 1971-, 13564775</ns3:firstname>
        <ns3:lastname>Jakovljević</ns3:lastname>
      </ns1:entity>
      <ns1:date>2020</ns1:date>
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      <ns1:role>63</ns1:role>
      <ns1:ext_role>predsednik komisije</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Marko, 1979-, 13593447</ns3:firstname>
        <ns3:lastname>Folić</ns3:lastname>
      </ns1:entity>
      <ns1:date>2020</ns1:date>
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      <ns1:role>63</ns1:role>
      <ns1:ext_role>član komisije</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Miloje, 1961-, 10149479</ns3:firstname>
        <ns3:lastname>Tomašević</ns3:lastname>
      </ns1:entity>
      <ns1:date>2020</ns1:date>
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      <ns1:role>63</ns1:role>
      <ns1:ext_role>član komisije</ns1:ext_role>
      <ns1:entity seq="0">
        <ns3:firstname> Slobodan, 1968-, 7221607</ns3:firstname>
        <ns3:lastname>Obradović</ns3:lastname>
      </ns1:entity>
      <ns1:date>2020</ns1:date>
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    <ns1:location>http://phaidrabg.bg.ac.rs/o:1285</ns1:location>
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  <ns1:rights>
    <ns1:cost>no</ns1:cost>
    <ns1:copyright>yes</ns1:copyright>
    <ns1:license>4</ns1:license>
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  <ns1:annotation>
    <ns6:annotations>
      <ns6:date>2020-11-13T09:23:05.320Z</ns6:date>
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  <ns1:classification>
    <ns1:purpose>70</ns1:purpose>
    <ns7:keyword language="sr" seq="1">atrijalna fibrilacija, dabigatran, globalni hemostatski testovi,rivaroksaban</ns7:keyword>
    <ns7:keyword language="sr" seq="1">atrial fibrillation, dabigatran, global hemostatic assays, rivaroxaban</ns7:keyword>
    <ns7:keyword language="sr" seq="1">616.151(043.3)</ns7:keyword>
  </ns1:classification>
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    <ns12:releaseyear>2020</ns12:releaseyear>
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