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首页> 外文期刊>Circulation journal >Prone Position is Essential for Detection of Pulmonary Vein Pseudostenosis by Enhanced Multidetector Computed Tomography in Patients Who Undergo Pulmonary Vein Isolation
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Prone Position is Essential for Detection of Pulmonary Vein Pseudostenosis by Enhanced Multidetector Computed Tomography in Patients Who Undergo Pulmonary Vein Isolation

机译：俯卧位对于接受肺静脉隔离的患者通过增强型多探测器计算机断层扫描技术检测肺静脉假性狭窄至关重要

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Background Pulmonary vein (PV) stenosis is a major complication of PV isolation (PVI) by catheter ablation, so in the present study the optimal position for detecting PV stenosis on enhanced multidetector computed tomography (MDCT) image acquisition was determined.Methods and Results The 64-slice enhanced MDCT was carried out before and after PVI in 116 consecutive patients with atrial fibrillation while they were in the prone position, as well as while supine. The supine position MDCT image showed >50% diameter stenosis of the PV in 11 (9%) patients before PVI (% diameter stenosis: mean 55 +- 4%, range 51-65%). Greater than 50% diameter stenosis was seen in the left inferior PV in all 11 patients. The prone position attenuated the PV stenosis findings in the MDCT images in all 11 patients (mean 9 +- 6%, range 2-18%). Stenosis visualized on images acquired in the supine position was, therefore, concluded to be pseudostenosis caused by descending aorta compression. At 3 months after PVI, no significant changes in PV diameter were observed in these 11 patients.Conclusion The present study demonstrated that the prone position is essential for eliminating PV pseudostenosis observed on supine-position enhanced MDCT images. The results also indicate that preexisting PV organic stenosis is rare.
机译：背景技术肺静脉狭窄是通过导管消融术隔离PV（PVI）的主要并发症，因此，本研究确定了在增强型多探测器计算机断层扫描（MDCT）图像采集中检测PV狭窄的最佳位置。方法和结果连续116例心室纤颤患者在俯卧和仰卧时，在PVI之前和之后进行了64层增强MDCT。仰卧位MDCT图像显示PVI前11例（9％）患者的PV直径狭窄> 50％（直径狭窄百分比：平均55±4％，范围51-65％）。在所有11例患者的左下PV中均发现直径狭窄大于50％。俯卧位置减弱了所有11例患者的MDCT图像中的PV狭窄发现（平均9±6％，范围2-18％）。因此，在仰卧位获得的图像上可视化的狭窄被认为是由主动脉降压引起的假性狭窄。 PVI后3个月，这11例患者的PV直径未见明显变化。结论本研究表明，俯卧位对于消除仰卧位增强MDCT图像上观察到的PV假性狭窄至关重要。结果还表明，先前存在的PV有机狭窄很少见。

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