Why the study?
Does dual therapy with warfarin and clopidogrel reduce bleeding compared to triple therapy in patients requiring oral anticoagulation undergoing PCI-S?
Does dual therapy with warfarin and clopidogrel reduce bleeding compared to triple therapy in patients requiring oral anticoagulation undergoing PCI-S?
While the WOEST study suggests dual therapy reduces bleeding compared to triple therapy in PCI patients on oral anticoagulation, this editorial cautions against its routine adoption due to insufficient power for efficacy endpoints like stent thrombosis.
LĂŠÄba trojkombinacĂ (triple therapy - TT) antagonistĹŻ vitaminu K (VKA), kyselinou acetylsalicylovou a clopidogrelem je v souÄasnĂŠ dobÄ doporuÄovĂĄna jako optimĂĄlnĂ antitrombotickĂĄ terapie u pacientĹŻ s nutnou perorĂĄlnĂ antikoagulacĂ bÄhem perkutĂĄnnĂ koronĂĄrnĂ intervence spolu s implantacĂ stentu (PCI-S). I kdyĹž je TT zĹejmÄ vysoce ĂşÄinnĂĄ v prevenci kombinovanĂŠ incidence ĂşmrtĂ, infarktu myokardu, opakovanĂŠ revaskularizace, trombĂłzy stentu a cĂŠvnĂ mozkovĂŠ pĹĂhody, je zĂĄroveĹ spojena s vysokou incidencĂ krvĂĄcenĂ. NedĂĄvno publikovanĂĄ studie WOEST (What is the Optimal antiplatElet and anticoagulant therapy in patients with oral anticoagulation and coronary StenTing) prokĂĄzala, Ĺže duĂĄlnĂ terapie (DT) s warfarinem a clopidogrelem je statisticky vĂ˝znamnÄ bezpeÄnÄjĹĄĂ neĹž TT z hlediska celkovĂŠ incidence krvĂĄcenĂ bez zjevnĂŠho snĂĹženĂ ĂşÄinnosti, protoĹže kombinovanĂĄ incidence ĂşmrtĂ, infarktu myokardu, opakovanĂŠ revaskularizace, trombĂłzy stentu a cĂŠvnĂ mozkovĂŠ pĹĂhody byla v rameni DT ve skuteÄnosti rovnÄĹž niŞťà neĹž v rameni TT. Vzhledem k nedostateÄnĂŠ statistickĂŠ sĂle studie WOEST pro spolehlivĂŠ zhodnocenĂ parametrĹŻ ĂşÄinnosti, zvlĂĄĹĄtÄ v pĹĂpadÄ trombĂłzy stentu, a vzhledem k omezenĂŠ vyĹĄĹĄĂ bezpeÄnosti DT oproti TT v pĹĂpadÄ klinicky vĂ˝znamnĂŠho krvĂĄcenĂ se domnĂvĂĄme, Ĺže vĂ˝sledky studie WOEST by nemÄly vĂŠst k unĂĄhlenĂŠmu pĹijetĂ DT jako antitrombotickĂŠho reĹžimu volby u pacientĹŻ indikovanĂ˝ch k podĂĄnĂ VKA pĹi plĂĄnovanĂŠ PCI-S.
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Rubboli et al. (2014) studied this question.
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