Radiology:肝硬化患者TIPS术后的骨骼肌定量影像学评估究竟有何临床意义?

2022-08-16 shaosai MedSci原创

经颈静脉肝内门静脉分流术(TIPS)用于治疗与门静脉高压有关的并发症,其中主要包括难治性腹水和静脉出血。一些研究证实,肌肉疏松症可以通过TIPS得到改善,且可以通过CT扫描进行动态监测。

肌肉疏松症定义为骨骼肌肉质量、力量和功能的丧失,一般与严重的营养不良相关。此外,肌肉疏松症的特点是肌肉体积减少,肌肉间和肌肉内脂肪的比例增加。研究表明,肌肉疏松症与肝硬化患者的肝硬化相关并发症(肝性脑病、腹水或感染)的发生率较高有关,并对患者的生活质量产生负面影响。此外,在肝硬化患者中,肌肉疏松症已被确定为死亡的一个独立风险因素。

现阶段临床上使用L3椎体处的CT图像量化骨骼肌肉和脂肪质量。在肝硬化患者中,CT通常被用于筛查或监测肝脏疾病。因此,CT可以作为一种评估骨骼肌和脂肪质量动态变化影像学手段

经颈静脉肝内门静脉分流术(TIPS)用于治疗与门静脉高压有关的并发症,其中主要包括难治性腹水和静脉出血。一些研究证实,肌肉疏松症可以通过TIPS得到改善,可以通过CT扫描进行动态监测。具体来说,通过使用CT图像可以计算和分析骨骼肌面积(SMA)和骨骼肌指数(SMI),是目前评估肌肉疏松症的标准。

近日,发表Radiology杂志的一项研究评估了患有和不患有肌肉疏松症的患者在进行TIPS后CT骨骼肌、脂肪量和SMI的变化,并分析了与肌肉疏松症的逆转和预后的关系。

本研究在2016年8月至2020年5月期间接受TIPS的患者纳入研究。基线时和TIPS术后2个月、5个月和1年时,在L3椎体处用CT评估了骨骼肌和脂肪质量。肌肉疏松症定义男性的L3骨骼肌指数(SMI)小于50cm2/m2,女性小于39cm2/m2。主要终点是骨骼肌和脂肪质量的变化,次要终点包括生存率和生存率的预测因素。骨骼肌和脂肪质量随时间的变化用广义估计方程进行分析。

共有224名患者(159名男性[113名和46名没有肌肉疏松症]和65名女性[32名和33名没有肌肉疏松症])被纳入研究。在患有肌肉疏松症的男性患者中,TIPS治疗后,平均L3 SMI从41.8cm2/m2(基线)增加到49.1  cm2/m2(5个月的随访;P < .001)和49.6cm2/m2(1年的随访;P < .001)。在患有肌肉疏松症的女性患者中,SMI在TIPS后从33.7 cm2/m2(基线)增加到40.6 cm2/m2(5个月的随访;P < .001)和42.0cm2/m2(1年的随访;P < .001)。肌肉疏松症(危险比,3.0;95%CI:1.2,7.8)被确定为TIPS后死亡的独立风险因素,从肌肉疏松症转为非肌肉疏松症的患者的累积存活率高于没有转为非肌肉疏松症的患者(96.4% vs 82.1%;对数rank P = 0.04)。


 轴位CT图像显示了经颈静脉肝内门静脉分流术(TIPS)后患有和不患有肌肉疏松症的患者的骨骼肌和脂肪质量的变化。基线和TIPS后1个月、6个月和1年时骨骼肌(红色)和皮下脂肪(绿色)的定量CT:(A)一名49岁的肌肉疏松症男子、(B)一名56岁的肌肉疏松症妇女、(C)一名50岁的无肌肉疏松症男子以及(D)一名61岁的无肌肉疏松症妇女

本研究显示,在接受经颈静脉内门静脉分流术(TIPS)后,患有肌肉疏松症患者的骨骼肌肉和脂肪质量明显增加。在接受TIPS手术的患者中,肌肉疏松症与死亡风险的增加有关,同时在TIPS术后肌肉疏松症的逆转可以降低这一风险。

 

原文出处:

Jiacheng Liu,Jinqiang Ma,Chongtu Yang,et al.Sarcopenia in Patients with Cirrhosis after Transjugular Intrahepatic Portosystemic Shunt Placement.DOI:10.1148/radiol.211172

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    2022-11-05 yige2011
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    2022-08-18 chengjn
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