Free water clearance
Videos
Notes
Physiology
Renal system
Anatomy and physiology
Fluid compartments and homeostasis
Renal clearance, glomerular filtration and renal blood flow
Renal tubular reabsorption and secretion
Renal tubular physiology
Renin-angiotensin-aldosterone system
Renal electrolyte regulation
Renal sodium and water regulation
Renal endocrine functions
Acid-base physiology
High Yield Notes
7 pages
External Links
Free water clearance exam links
Summary
Free water is distilled water that is free of any solutes. Free water clearance (CH2O) refers to the amount of free water that the kidneys excreted out of the blood plasma per day. Free water is normally filtered at the level of the thick ascending limb and the early distal tubule of a nephron. Measuring free water clearance is one method for assessing the kidney's function.
Sources
- "Medical Physiology" Elsevier (2016)
- "Physiology" Elsevier (2017)
- "Human Anatomy & Physiology" Pearson (2018)
- "Principles of Anatomy and Physiology" Wiley (2014)
- "The development of the clearance concept" J Nephrol (2004)
- "The current place of urea kinetic modelling with respect to different dialysis modalities" Nephrology Dialysis Transplantation (1998)