PMID- 29618696 OWN - NLM STAT- MEDLINE DCOM- 20191017 LR - 20191017 IS - 1347-4820 (Electronic) IS - 1346-9843 (Linking) VI - 82 IP - 7 DP - 2018 Jun 25 TI - Subclinical Leaflet Thrombosis in Transcatheter Aortic Valve Replacement Detected by Multidetector Computed Tomography - A Review of Current Evidence. PG - 1735-1742 LID - 10.1253/circj.CJ-17-1363 [doi] AB - Subclinical leaflet thrombosis (SLT) following transcatheter aortic valve replacement (TAVR) has been increasingly recognized. SLT has the hallmark features of hypo-attenuated leaflet thickening (HALT) on multidetector computed tomography (MDCT), which may result in hypoattenuation affecting motion (HAM). The actual prevalence of this condition is uncertain, with limited observational registries. SLT has caught the attention of the cardiovascular community because of concerns regarding its clinical sequelae, specifically the potential increased incidence of cerebrovascular events. There are available, albeit sparse, data to suggest that when left untreated, SLT may lead to valve deterioration with potential hemodynamic compromise and potentially clinically overt prostheses thrombosis. Some clinicians have opted to treat patients with SLT with anticoagulation. Although anticoagulation may be a rational treatment option, little data exist on the safety and efficacy of this treatment. This is particularly important considering TAVR patients also have higher bleeding risk than the standard population. In this review, we aim to summarize the current evidence on SLT, explore its pathophysiological mechanism, discuss the current treatment options and future trials that may clarify the optimal antithrombotic strategies of SLT. FAU - Rashid, Hashrul N AU - Rashid HN AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - Brown, Adam J AU - Brown AJ AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - McCormick, Liam M AU - McCormick LM AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - Amiruddin, Ameera S AU - Amiruddin AS AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - Be, Kim K AU - Be KK AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - Cameron, James D AU - Cameron JD AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - Nasis, Arthur AU - Nasis A AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. FAU - Gooley, Robert P AU - Gooley RP AD - Monash Cardiovascular Research Centre, Monash University and MonashHeart, Monash Health. LA - eng PT - Journal Article PT - Review DEP - 20180404 PL - Japan TA - Circ J JT - Circulation journal : official journal of the Japanese Circulation Society JID - 101137683 RN - 0 (Anticoagulants) SB - IM MH - Anticoagulants/therapeutic use MH - Hemorrhage/etiology MH - Humans MH - Multidetector Computed Tomography/*methods MH - Thrombosis/*diagnosis/drug therapy/physiopathology MH - Transcatheter Aortic Valve Replacement/adverse effects/*methods OTO - NOTNLM OT - Aortic stenosis OT - Thrombosis OT - Transcatheter aortic valve replacement/implantation EDAT- 2018/04/06 06:00 MHDA- 2019/10/18 06:00 CRDT- 2018/04/06 06:00 PHST- 2018/04/06 06:00 [pubmed] PHST- 2019/10/18 06:00 [medline] PHST- 2018/04/06 06:00 [entrez] AID - 10.1253/circj.CJ-17-1363 [doi] PST - ppublish SO - Circ J. 2018 Jun 25;82(7):1735-1742. doi: 10.1253/circj.CJ-17-1363. Epub 2018 Apr 4.