Femia Giuseppe, Fetahovic Taufik, Shetty Pratap, Lee Astin
Department of Cardiology, The Wollongong Hospital, Wollongong, NSW, Australia.
Department of Cardiology, The Wollongong Hospital, Wollongong, NSW, Australia.
Heart Lung Circ. 2018 Jul;27(7):798-803. doi: 10.1016/j.hlc.2017.06.726. Epub 2017 Jul 17.
BACKGROUND: For some patients with atrial fibrillation, direct current cardioversion (DCCV) is one strategy that can be used to establish sinus rhythm but appropriate anticoagulation is mandatory to prevent thromboembolic events. Historically, patients were anticoagulated with warfarin with bridging with unfractionated or low molecular weight heparin, however, recently novel oral anticoagulants (NOACs), apixaban, dabigatran and rivaroxaban have become more popular. Despite the increase in use, real world data on safety and efficacy is limited. METHODS: We retrospectively analysed patients that underwent DCCV at Wollongong Hospital from 1 January 2014 to 30 June 2016 and compared peri-procedural anticoagulation with warfarin and the three NOACs. Patients were treated with at least 24hours of anticoagulation before and at least four weeks after the procedure unless contraindication developed. All patients underwent transoesophageal echocardiography prior to cardioversion regardless of anticoagulation type or duration. Patients with left atrial or left atrial appendage thrombus did not undergo cardioversion. We analysed the utilisation rates of NOACs and compared the incidence of post procedural ischaemic strokes and major bleeding events at eight weeks follow-up. RESULTS: Over the study period, 284 patients underwent DCCV; 109 (38.4%) patients were anticoagulated with warfarin and 175 (61.6%) with one of the three NOACs; 77 (27.1%) with apixaban, 60 (21.1%) with rivaroxaban and 38 (13.4%) with dabigatran. Patients treated with warfarin were on average older (71.3±9.7 vs. 65.2±12.9; p value, 0.0005) with more cardiac risk factors including documented heart failure with reduced ejection fraction (39.4% vs. 22.9%; p value, 0.0032), medically treated hypertension (76.1% vs. 48.6%; p value, 0.0001) and peripheral vascular disease (31.2% vs. 12.1%; p value, 0.0004). The NOACs were more frequently used in patients with lower CHADS-VASc scores; 179 patients had a score≤3 with 52 (29.1%) patients treated with warfarin and 127 (70.9%) treated with a NOAC (p value, 0.0001). In our cohort, the use of NOACs increased over the study period from 45.6% in 2014 to 82.8% in 2016. There was a low incidence of ischaemic stroke and bleeding events in both groups, 1.8% versus 0.6% (p value, 0.5607) and 3.6% versus 1.7% (p value, 0.4343) respectively. In the NOAC group, 95 of the 174 patients were anticoagulation-naïve and anticoagulated for less than five days; in comparison to longer duration therapy there was no difference in ischaemic stroke and bleeding events. CONCLUSION: In our institution, the use of NOACs in electrical cardioversion increased significantly over the study period and in our experience, they appear to be as safe as warfarin with low rates of ischaemic stroke and major bleeding. In addition, a short duration NOAC strategy was comparable to longer duration therapy.
背景:对于一些房颤患者,直流电复律(DCCV)是用于恢复窦性心律的一种策略,但必须进行适当的抗凝以预防血栓栓塞事件。过去,患者使用华法林抗凝,并联合使用普通肝素或低分子肝素进行桥接抗凝,然而,近年来新型口服抗凝药(NOACs),如阿哌沙班、达比加群和利伐沙班越来越受欢迎。尽管其使用有所增加,但关于安全性和有效性的真实世界数据有限。 方法:我们回顾性分析了2014年1月1日至2016年6月30日在卧龙岗医院接受DCCV的患者,并比较了使用华法林和三种NOACs进行围手术期抗凝的情况。除非出现禁忌证,患者在手术前至少接受24小时抗凝,并在术后至少四周进行抗凝。无论抗凝类型或持续时间如何,所有患者在复律前均接受经食管超声心动图检查。有左心房或左心耳血栓的患者未进行复律。我们分析了NOACs的使用率,并比较了术后八周随访时缺血性中风和大出血事件的发生率。 结果:在研究期间,284例患者接受了DCCV;109例(38.4%)患者使用华法林抗凝,175例(61.6%)患者使用三种NOACs之一抗凝;77例(27.1%)使用阿哌沙班,60例(21.1%)使用利伐沙班,38例(13.4%)使用达比加群。使用华法林治疗的患者平均年龄较大(71.3±9.7岁 vs. 65.2±12.9岁;p值,0.0005),有更多的心脏危险因素,包括记录在案的射血分数降低的心力衰竭(39.4% vs. 22.9%;p值,0.0032)、药物治疗的高血压(76.1% vs. 48.6%;p值,0.0001)和外周血管疾病(31.2% vs. 12.1%;p值,0.0004)。NOACs在CHADS-VASc评分较低的患者中使用更为频繁;179例患者评分≤3,其中52例(29.1%)使用华法林治疗,127例(70.9%)使用NOACs治疗(p值,0.0001)。在我们的队列中,研究期间NOACs的使用从2014年的45.6%增加到2016年的82.8%。两组缺血性中风和出血事件的发生率均较低,分别为1.8% vs. 0.6%(p值,0.5607)和3.6% vs. 1.7%(p值,0.4343)。在NOAC组中,174例患者中有95例未接受过抗凝治疗且抗凝时间少于五天;与较长时间的治疗相比,缺血性中风和出血事件没有差异。 结论:在我们机构,研究期间NOACs在电复律中的使用显著增加,根据我们的经验,它们似乎与华法林一样安全,缺血性中风和大出血发生率较低。此外,短疗程NOAC策略与长疗程治疗相当。
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