PMID- 34575348 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211001 IS - 2077-0383 (Print) IS - 2077-0383 (Electronic) IS - 2077-0383 (Linking) VI - 10 IP - 18 DP - 2021 Sep 18 TI - Running after Activated Clotting Time Values in Patients Receiving Direct Oral Anticoagulants: A Potentially Dangerous Race. Results from a Prospective Study in Atrial Fibrillation Catheter Ablation Procedures. LID - 10.3390/jcm10184240 [doi] LID - 4240 AB - BACKGROUND: Activated Clotting Time (ACT) guided heparinization is the gold standard for titrating unfractionated heparin (UFH) administration during atrial fibrillation (AF) ablation procedures. The current ACT target (300 s) is based on studies in patients receiving a vitamin K antagonist (VKA). Several studies have shown that in patients receiving Direct Oral Anticoagulants (DOACs), the correlation between ACT values and UFH delivered dose is weak. OBJECTIVE: To assess the relationship between ACT and real heparin anticoagulant effect measured by anti-Xa activity in patients receiving different anticoagulant treatments. METHODS: Patients referred for AF catheter ablation in our centre were prospectively included depending on their anticoagulant type. RESULTS: 113 patients were included, receiving rivaroxaban (n = 30), apixaban (n = 30), dabigatran (n = 30), and VKA (n = 23). To meet target ACT, a higher UFH dose was required in DOAC than VKA patients (14,077.8 IU vs. 9565.2 IU, p < 0.001), leading to a longer time to achieve target ACT (46.5 min vs. 27.3 min, p = 0.001). The correlation of ACT and anti-Xa activity was tighter in the VKA group (Spearman correlation rho = 0.53), compared to the DOAC group (rho = 0.19). Despite lower ACT values in the DOAC group, this group demonstrated a higher mean anti-Xa activity compared to the VKA group (1.56 +/- 0.39 vs. 1.14 +/- 0.36; p = 0.002). CONCLUSION: Use of a conventional ACT threshold at 300 s during AF ablation procedures leads to a significant increase in UFH administration in patients treated with DOACs. This increase corresponds more likely to an overdosing than a real increase in UFH requirement. FAU - Benali, Karim AU - Benali K AUID- ORCID: 0000-0002-7108-3427 AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. AD - INSERM-IADI, U1254, 54500 Vandoeuvre les-Nancy, France. AD - Departement de Cardiologie, CHU de Saint-Etienne, 42270 Saint-Priest-En-Jarez, France. FAU - Verain, Julien AU - Verain J AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. FAU - Hammache, Nefissa AU - Hammache N AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. AD - INSERM-IADI, U1254, 54500 Vandoeuvre les-Nancy, France. FAU - Guenancia, Charles AU - Guenancia C AUID- ORCID: 0000-0002-3554-7714 AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. AD - INSERM-IADI, U1254, 54500 Vandoeuvre les-Nancy, France. AD - Departement de Cardiologie, CHU de Dijon, 21000 Dijon, France. FAU - Hooks, Darren AU - Hooks D AD - Cardiology Department, Wellington Hospital, Wellington 6021, New Zealand. FAU - Magnin-Poull, Isabelle AU - Magnin-Poull I AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. AD - INSERM-IADI, U1254, 54500 Vandoeuvre les-Nancy, France. FAU - Toussaint-Hacquard, Marie AU - Toussaint-Hacquard M AD - Laboratoire d'hemostase, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. FAU - de Chillou, Christian AU - de Chillou C AUID- ORCID: 0000-0002-9025-6821 AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. AD - INSERM-IADI, U1254, 54500 Vandoeuvre les-Nancy, France. FAU - Sellal, Jean-Marc AU - Sellal JM AUID- ORCID: 0000-0003-1080-7425 AD - Departement de Cardiologie, CHRU de Nancy, 54500 Vandoeuvre les-Nancy, France. AD - INSERM-IADI, U1254, 54500 Vandoeuvre les-Nancy, France. LA - eng PT - Journal Article DEP - 20210918 PL - Switzerland TA - J Clin Med JT - Journal of clinical medicine JID - 101606588 PMC - PMC8465849 OTO - NOTNLM OT - activated clotting time OT - anti-Xa activity OT - anticoagulation OT - atrial fibrillation OT - catheter ablation OT - direct oral anticoagulants OT - heparin OT - vitamin K antagonist COIS- The authors declare no conflict of interest. EDAT- 2021/09/29 06:00 MHDA- 2021/09/29 06:01 PMCR- 2021/09/18 CRDT- 2021/09/28 01:15 PHST- 2021/09/06 00:00 [received] PHST- 2021/09/13 00:00 [revised] PHST- 2021/09/15 00:00 [accepted] PHST- 2021/09/28 01:15 [entrez] PHST- 2021/09/29 06:00 [pubmed] PHST- 2021/09/29 06:01 [medline] PHST- 2021/09/18 00:00 [pmc-release] AID - jcm10184240 [pii] AID - jcm-10-04240 [pii] AID - 10.3390/jcm10184240 [doi] PST - epublish SO - J Clin Med. 2021 Sep 18;10(18):4240. doi: 10.3390/jcm10184240.