左心室辅助装置:进展、并发症和缺陷。

IF 4.2 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Robert Ambrosini, Keva Green, Katherine Kaproth-Joslin, Jeffrey Alexis, Bryan Barrus, Igor Gosev, Abhishek Chaturvedi, Susan K Hobbs
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引用次数: 0

摘要

左心室辅助装置(lvad)用于短期支持,作为移植的桥梁,或作为终末期收缩期心力衰竭患者的终点治疗。成像在评估植入的解剖适应性和发现植入和外植体的并发症方面起着至关重要的作用。lvad相关并发症可影响泵、流入插管、流出移植物或传动系统。超声心动图可有效评估流入插管位置和某些参数,如流入和流出速度、瓣膜反流和心室扩张;然而,其可视化流入和流出套管内部的能力有限。对于lvad患者,MRI是禁忌。对比增强胸部CT成像已成为评估流出口移植并发症的首选诊断方式。这篇影像文章描述了lvad的CT表现和并发症,特别是市售的HeartMate II和HeartMate 3设备(Abbott Laboratories)。虽然被美国食品和药物管理局召回的心脏器械(美敦力)也将被提及。关键词:心脏辅助装置,CT成像,本文有补充资料。©rsna, 2025。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Left Ventricular Assist Devices: Advances, Complications, and Pitfalls.

Left ventricular assist devices (LVADs) are used for short-term support, as a bridge to transplant, or as destination therapy in patients with end-stage systolic heart failure. Imaging plays a crucial role in assessing the anatomic suitability for implantation and in detecting complications following both implantation and explantation. LVAD-associated complications can affect the pump, inflow cannula, outflow graft, or driveline. Echocardiography is effective for evaluating inflow cannula position and certain parameters, such as inflow and outflow velocities, valvular regurgitation, and ventricular dilatation; however, its ability to visualize the interiors of the inflow and outflow cannulas is limited. MRI is contraindicated for patients with LVADs. Contrast-enhanced chest CT imaging has become the preferred diagnostic modality for evaluating outflow graft complications. This imaging essay describes the CT findings and complications associated with LVADs, particularly the commercially available HeartMate II and HeartMate 3 devices (Abbott Laboratories). The HeartWare device (Medtronic), although recalled by the U.S. Food and Drug Administration, will also be mentioned. Keywords: Cardiac Assist Devices, CT Imaging Supplemental material is available for this article. © RSNA, 2025.

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