J Rheumatol:系统性硬化症中左心室心肌功能障碍的进展

2019-03-07 xiangting MedSci原创

在SSc患者中,LV收缩功能障碍的进展可以由GLS证实,而不是LV射血分数。

心脏受累是系统性硬化症(SSc)死亡的主要原因。使用常规超声心动图检测心脏受累仍具有挑战性,对其潜在进展知之甚少。该研究在一个前瞻性SSc患者队列中评估了心脏性能随时间的变化,其中包括超声心动图斑点追踪应变分析。

这项研究纳入234例SSc患者[196例女性,年龄52±14岁,165例为局限性SSc,诊断时间5.2年,四分位间距(IQR)2.9-11.3]。在基线和随访时记录临床指标、实验室检查、肺功能检查和超声心动图指标(中位数2.3年,IQR 1.3-3.9)。另外,通过超声心动图斑点追踪分析用整体纵向应变(GLS)评估左心室(LV)收缩功能。

随访时,GLS明显恶化(-21%±2 vs -19%±2,p<0.001),而LV射血分数没有发生变化(62%±7 vs 61%±8,p=0.124)。特别的是,39例患者出现GLS显著恶化,显著恶化定义为降低≥15%,伴随着近端肌无力、肺纤维化、肾功能、左心室舒张功能和右心室收缩功能的同时恶化。与GLS恶化≥15%相关的基线指标是近端肌无力(OR 3.437,95%CI 1.13-10.43,p=0.020)、DLCO降低(OR 3.621,95%CI 1.25-10.51,p=0.049)和LV舒张功能障碍(OR 2.378,95%CI 1.07-5.27,p=0.033)。

在SSc患者中,LV收缩功能障碍的进展可以由GLS证实,而不是LV射血分数。近端肌无力、DLCO和LV舒张功能障碍可以识别有进展性LV收缩功能障碍风险并需要更密切心脏监测的患者。

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