■比较两种用于去除扁桃体玻璃体切除术后硅油(SiO)乳液填塞的手术技术的功效:三重气-液交换(AFX)和平衡盐溶液灌洗(BSSL)。
■X射线光发射光谱法测量了在AFX和BSSL期间采集的流体样品的干残留物的硅含量。10例患者接受AFX和5例BSSL。每个病人采集三个液体样本,分析每个样品10滴的干残留物。还分析了从未接受过SiO填塞的患者的液体样品,以设置“空白”参考样品。
■患者的人口统计学没有显着差异。两组样品1的硅含量相当,而AFX组的样品2和3的硅含量明显高于BSSL组(AFX组的15.0±0.1和12.0±0.9与BSSL组的10.7±1.4和5.2±0.6,分别;P<0.05)。AFX组的三个连续样品中硅的累积量也显着较高(42.3±1.6vs.32±2;P<0.0001)。AFX组连续样品的平均硅含量比明显高于BSSL组(0.90±0.01vs.0.58±0.06;P=0.006)。
■三重AFX比三重灌洗去除更多的硅。眼壁与保留硅含量的硅乳液积极相互作用,而不是作为中性容器。
■三重空气-流体交换比BSS灌洗去除更多的硅。两种技术都没有表现为混合良好的盒子稀释,表明眼壁主动保留乳液,并且在硅分散体和眼壁表面之间建立了动态平衡。
To compare the efficacy of two surgical techniques used to remove silicone oil (SiO) emulsion tamponade after pars plana vitrectomy: triple air-fluid exchange (AFX) and balanced salt solution lavage (BSSL).
X-ray photoemission spectroscopy measured silicon content of the dry residue of fluid samples taken during AFX and BSSL. Ten patients underwent AFX and five BSSL. Three fluid samples were taken per patient, and the dry residue of 10 drops per sample were analyzed. A fluid sample from a patient who never received SiO tamponade was also analyzed to set a \"blank\" reference sample.
Patients\' demographics showed no significant difference. Sample 1 of the two groups contained comparable silicon content while samples 2 and 3 of the AFX group contained significantly more silicon than that of the BSSL group (15.0 ± 0.1 and 12.0 ± 0.9 for the AFX group vs. 10.7 ± 1.4 and 5.2 ± 0.6 for the BSSL group, respectively; P < 0.05). The cumulative amount of silicon in the three successive samples was also significantly higher for the AFX group (42.3 ± 1.6 vs. 32 ± 2; P < 0.0001). The average silicon content ratio of consecutive samples was significantly higher for the AFX group compared to the BSSL group (0.90 ± 0.01 vs. 0.58 ± 0.06; P = 0.006).
Triple AFX removed more silicon than triple lavage. The eye wall actively interacts with silicon emulsion retaining silicon content rather than behaving as a neutral container.
Triple air-fluid exchange removed more silicon than BSS lavage. Neither technique behaved as a well-mixed box dilution, suggesting the eye walls actively retain emulsion and a dynamic equilibrium is established between silicon dispersion and the eye wall surface.