Dos artículos recientemente publicados tratan de responder estos interrogantes, uno de ellos publicado por el grupo del Centro CECI.

Estos son los dos artículos:

1- Wilson SJ , Newby D, Dawson D, Irving J and Berry C Duration of DAPT in acute coronary syndrome Heart. 2017 Apr;103(8):573-580. doi: 10.1136/heartjnl-2016-309871. Epub 2017 Mar 1.
2- Rodriguez AE, Rodriguez-Granillo AM, Azcarrunz SD, Peralta-Bazan F, Cho MY. Did Prasugrel and Ticagrelor Offer the Same Benefit in Patients with Acute Coronary Syndromes after Percutaneous Coronary Interventions Compared to Clopidogrel? Insights from Randomized Clinical Trials, Registries and Meta-analysis. Curr Pharm Des. 2018 Jan 8. doi: 10.2174/1381612824666180108121834.

• «Duration of dual antiplatelet therapy in acute coronary syndrome»

Abstract: Despite a large volume of evidence supporting the use of dual antiplatelet therapy in patients with acute coronary syndrome, there remains major uncertainty regarding the optimal duration of therapy. Clinical trials have varied markedly in the duration of therapy, both across and within trials. Recent systematic reviews and meta-analyses suggest that shorter durations of dual antiplatelet therapy are superior because the avoidance of atherothrombotic events is counterbalanced by the greater risks of excess major bleeding with apparent increases in all-cause mortality with longer durations. These findings did not show significant heterogeneity according to whether patients had stable or unstable coronary heart disease. Moreover, the potential hazards and benefits may differ when applied to the general broad population of patients encountered in everyday clinical practice who have markedly higher bleeding and atherothrombotic event rates. Clinicians lack definitive information regarding the duration of therapy in patients with acute coronary syndrome and risk scores do not appear to be sufficiently robust to address these concerns. We believe that there is a pressing need to undertake a broad inclusive safety trial of shorter durations of therapy in real world populations of patients with acute coronary syndrome. The clinical evidence would further inform future research into strategies for personalised medicine.

• «Did Prasugrel and Ticagrelor Offer the Same Benefit in Patients with Acute Coronary Syndromes after Percutaneous Coronary Interventions Compared to Clopidogrel? Insights from Randomized Clinical Trials, Registries and Meta-analysis.»

Abstract: 

BACKGROUND:
According to ACC/ AHA guidelines, a minimum of 1 year of dual anti- platelet therapy (DAPT) consisting of aspirin and a platelet ADP-receptor antagonist (P2Y12 inhibitor) is recommended for patients presenting acute coronary syndromes (ACS), regardless of which type of revascularization is performed during the acute event.

METHODS:
The purpose of this presentation was to review the present data either from a direct randomized comparison among the three compounds and also large prospective observational registries and meta-analysis were analyzed in detail. With this aim, we performed an extensive large search from PubMed/Medline Journals identifying studies comparing fashion the new P2Y12 inhibitors in patients with ACS including ST elevation myocardial infarction (STEMI)in direct and indirect manner.

RESULTS:
Pivotal large randomized clinical trials (RCT) in patients with ACS including STEMI, comparing clopidogrel, a first generation P2Y12 inhibitor against the newer prasugrel and ticagrelor showed major efficacy advantages of the latters although both drugs had more bleeding risk than clopidogrel. Direct comparisons of prasugrel and ticagrelor from large RCT are not yet available, however, several observational registries and meta-analysis reported results from an indirect comparison between both compounds. Major findings and limitations of each of these studies were identified, highlighted and discussed.

CONCLUSION:
Prasugrel and ticagrelor are both more effective than clopidogrel to prevent adverse cardiac events in patients with ACS. Compared to ticagrelor, prasugrel appears to be more effective in patients with STEMI , although lack of randomized data didn’t allow to draw definitive conclusions.

https://www.ncbi.nlm.nih.gov/pubmed/28249994

https://www.ncbi.nlm.nih.gov/pubmed/29308737