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在腹膜透析中使用低分子量标记物确定残留体积
Elin Lindholm1, Giedre Martus1, Carl M Öberg1
1Department of Clinical Sciences Lund, Skane University Hospital, Lund University, Lund, Sweden.
概括
使用肌素或尿素估计腹膜透析残留体积,由于标记分子质量转移,容易过度估计. 应用校正因子可以进行合理的估计,特别是排除大量剩余量.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 生物医学工程 生物医学工程
- 临床化学 临床化学
背景情况:
- 腹膜透析 (PD) 中的残留体积变化使超过和透析效率评估复杂化.
- 精确的残留体积测量对于防止过度填充风险至关重要.
- 在PD液填充过程中稀释标记分子是一种潜在的方法,但标记物选择会影响准确性.
研究的目的:
- 评估氨酸和尿素作为稀释标记物用于PD的残留体积估计.
- 将这些标记物与基于白蛋白的体积和三孔模型估计进行比较.
- 评估使用低分子量标记物用于残留体积的可行性.
主要方法:
- 来自20名PD患者的56个残留体积估计的回顾性分析.
- 在液体填充过程中测量透析氨酸,尿素和白蛋白稀释.
- 使用三孔模型量化偏差,考虑超过和葡萄糖度.
- 在标记分子之间开发线性回归转换因子.
主要成果:
- 基于肌素的方法显著高估了残留体积 (115-252毫升),特别是在较高的葡萄糖息地,由于质量转移.
- 在液体填充期间,肌内肌素质量显著增加,导致过高估计.
- 基于白蛋白的体积与三孔模型估计有很强的一致性.
- 校正因子使标记分子之间能够有效互换.
结论:
- 低分子量标记物 (肌素,尿素) 的质量转移导致PD的残留体积过高估计.
- 应用校正因子可以产生合理的估计与肌素和尿素.
- 这些标记器对于排除过大的残留量特别有用.
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