The surprising kidney-fluid mechanism for pressure control--its infinite gain!

Author:

Guyton A C1

Affiliation:

1. Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson 39216.

Abstract

In this short paper, I have tried to explain the elation that we felt when we first realized that the kidney-fluid mechanism for controlling the arterial pressure has an infinite feedback gain property. Because of this, all the other pressure control mechanisms, none of which has ever been shown to have a similar infinite gain property, must themselves alter the kidney-fluid mechanism if they are to succeed in causing long-term changes in the arterial pressure. We have not been able to refute this principle despite many experiments over the last 2 decades. For this reason, our first understanding of the infinite gain property of the kidney-fluid mechanism was like a light at the end of the tunnel. I hope that I can explain to the reader the excitement of those few seconds when we first recognized the principle in 1966.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Internal Medicine

Reference17 articles.

1. Page IH: Some regulatory mechanisms of renovascular and essential hypertension in Genest J Koin E Kuchel O (eds): Hypertension-Physiopathology and Treatment. New York McGraw Hill Book Co 1977 pp 574-587

2. Guyton AC Coleman TG: Long-term regulation of the circulation: Interrelationships with body fluid volumes in Reeve EB Guyton AC (eds): Physical Bases of Circulatory Transport Regulation and Exchange. Philadelphia WB Saunders Co 1967 pp 179-201

3. Guyton AC: Arterial Pressure and Hypertension. Philadelphia WB Saunders Co 1980 p 564

4. Influence of graded arterial pressure decrement on renal clearance of creatinine, p-aminohippurate and sodium;Selkurt EE;Am J Physiol,1949

5. Changes in renal blood flow, extraction of inulin, glomerular filtration rate, tissue pressure, and urine flow with acute alterations of renal artery blood pressure;Shipley RE;Am J Physiol,1951

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