在腹腔透析中,填充体积和运输之间的关系-从长椅到床边
1Department of Clinical Sciences Lund, Skåne University Hospital, Lund, Sweden.
概括
腹腔透析 (PD) 填充体积冲击溶液和水分的去除. 断点模型,而不是简单的比率,更好地预测PD患者和大鼠模型中的这些运输能力.
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
- 生理学 生理学 生理学
背景情况:
- 更大的腹腔透析 (PD) 填充体积通常会增强溶液清除和水分去除,但确切的关系尚不清楚.
- 目前的理解表明,一个简单的比率可以描述体积-运输动态,但可能存在一个临界体积,超出该体积后的好处会减少.
研究的目的:
- 在PD中研究腹腔内体积和溶液/水运输之间的关系.
- 将一个简单的比率模型与一个断点模型进行比较,以预测PD中的运输.
主要方法:
- 实验使用一种具有不同填充体积 (8+8+8毫升 vs. 12+12+12毫升) 的小鼠PD模型进行.
- 对前一项研究的临床数据进行了回顾性分析.
- 60项对水和溶解物运输的估计以透导电和溶解物扩散能力为特征.
主要成果:
- 断点模型在预测水和溶解物运输方面被证明优于简单比率模型.
- 断点模型准确地描述了来自老鼠的实验数据和来自患者的临床数据.
结论:
- 断点模型有效地描述了PD填充量和运输能力之间的关系.
- 基于该模型的简单计算可以近似估计不同PD填充体积对溶液和水分去除的临床影响.
相关概念视频
Peritoneal Dialysis I: Introduction & Procedure
2
Peritoneal dialysis (PD) is a procedure that facilitates the exchange of solutes, waste products, electrolytes, and excess fluid between the blood in the peritoneal capillaries and a dialysis solution introduced into the peritoneal cavity.Principles of Peritoneal Dialysis (PD)Diffusion: Waste products such as urea and electrolytes move from high concentrations in the blood to low concentrations in the dialysate across the peritoneal membrane. This mechanism is driven by the concentration...
2
Peritoneal Dialysis II: Peritoneal Dialysis Systems and Complications
2
Peritoneal dialysis (PD) is a medical process that removes waste products and excess fluid from the body using the peritoneal membrane as a natural filter.Peritoneal Dialysis MethodsSeveral methods can be used for peritoneal dialysis, including Acute Intermittent Peritoneal Dialysis, Continuous Ambulatory Peritoneal Dialysis, and Automated Peritoneal Dialysis, also known as Continuous Cyclic Peritoneal Dialysis.Acute Intermittent Peritoneal Dialysis (AIPD) is used for patients with uremic...
2
Dialysis
603
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
603
Drug Distribution: Volume of Distribution
4.6K
The volume of distribution refers to the theoretical volume necessary to contain the entire amount of an administered drug at the same concentration observed in the blood plasma. The body's intracellular fluid compartment, which makes up two-thirds of the total body water, is contrasted with the extracellular fluid compartment—comprising plasma and interstitial fluid—that accounts for one-third. The volume of distribution can vary depending on the characteristics of the drug.
4.6K
Volume of Distribution
132
The apparent volume of distribution (Vd) is a crucial pharmacokinetic parameter representing the hypothetical body fluid volume into which a drug disperses. It is calculated based on the total amount of drug in the body (estimated from the administered dose and bioavailability) divided by the plasma drug concentration. The total amount of drug in the body does not directly refer to the dose given but is derived by accounting for absorption, distribution, metabolism, and excretion processes.
132
Fluid Movement Between Compartments
492
The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
492


