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Comparison of Outcomes of Enoxaparin Bridge Therapy in HeartMate II versus HeartWare HVAD Recipients
Journal of Cardiovascular Pharmacology and Therapeutics ( IF 2.5 ) Pub Date : 2021-04-12 , DOI: 10.1177/10742484211006998
Mitulkumar Patel 1 , Tania Ahuja 1 , Serena Arnouk 1 , Claudia Gidea 2 , Alex Reyentovich 2 , Deane E Smith 3 , Nader Moazami 3 , John Papadopoulos 1 , Tyler C Lewis 1
Affiliation  

Background:

There is a lack of robust data evaluating outcomes of enoxaparin “bridge” therapy in left ventricular assist device (LVAD) patients.

Methods:

We performed a retrospective study of HeartMate II (HM II) and HeartWare HVAD recipients that received therapeutic enoxaparin as “bridge” therapy to describe bleeding and thrombotic events and compare outcomes between devices. The primary endpoint was the incidence of bleeding within 30 days of “bridge” episode. Major bleeding was defined by INTERMACS criteria.

Results:

We evaluated 257 “bridge” episodes in 54 patients, 35 with a HM II device and 19 with an HVAD device that underwent 176 and 81 bridging episodes, respectively. The median INR prior to “bridge” was lower in the HM II group compared to the HVAD group (1.5 vs 1.7, P < .01), however, there was no difference in the median duration of “bridge” therapy (7 vs 7 days, P = .42). There were a total of 30 (12%) bleeding episodes, with the majority in the HM II group vs HVAD (26 [15%] vs 4 [5%], P = .02). We observed 3 (1%) thromboembolic events in 2 (4%) patients with an HVAD device. On multivariate analysis, the presence of a HM II device was associated with a 4-fold increased risk of bleeding.

Conclusion:

We found the use of enoxaparin “bridge” therapy to be associated with a higher incidence of bleeding in patients with a HM II device compared with an HVAD device. Assessment of device- and patient-specific factors should be evaluated to minimize bleeding events.



中文翻译:

HeartMate II 与 HeartWare HVAD 接受者中依诺肝素桥接治疗结果的比较

背景:

缺乏可靠的数据来评估左心室辅助装置(LVAD)患者依诺肝素“桥接”治疗的结果。

方法:

我们对接受治疗性依诺肝素作为“桥梁”治疗的 HeartMate II (HM II) 和 HeartWare HVAD 接受者进行了一项回顾性研究,以描述出血和血栓形成事件并比较设备之间的结果。主要终点是“桥”发作后 30 天内的出血发生率。大出血由 INTERMACS 标准定义。

结果:

我们评估了 54 名患者的 257 次“桥接”发作,其中 35 名使用 HM II 装置,19 名使用 HVAD 装置,分别经历了 176 和 81 次桥接发作。与 HVAD 组相比,HM II 组在“桥接”之前的中位 INR 较低(1.5 对 1.7,P < .01),但是“桥接”治疗的中位持续时间没有差异(7 对 7天,P = .42)。共有 30 次 (12%) 出血事件,其中 HM II 组与 HVAD 组中的大多数(26 [15%] vs 4 [5%],P = .02)。我们在 2 (4%) 名使用 HVAD 设备的患者中观察到 3 (1%) 次血栓栓塞事件。在多变量分析中,HM II 装置的存在与出血风险增加 4 倍相关。

结论:

我们发现,与 HVAD 设备相比,使用 HM II 设备的患者使用依诺肝素“桥接”疗法与更高的出血发生率相关。应评估设备和患者特定因素的评估,以尽量减少出血事件。

更新日期:2021-04-13
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