Sodium Excretion in Volume-Expanded Dogs : I. Comparison of the Effects of Physiological Saline and 5% Glucose Solution

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概要

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• Dogs were subjected to volume expansion with physiological saline and 5% glucose solution. During the infusion Na excretion was significantly increased only when saline was given. Maintenance of the volume expansion with 5% glucose solution immediately following saline infusion was ineffective in preventing the decline of Na excretion rate after the cessation of saline loading. Although the indices of hemodilution such as plasma total protein concentration and peripheral venous hematocrit were reduced along with natriuresis, these values also correlated with the total amount of Na retained during saline infusion. And this amount of retained Na has also a good correlation with the natriuresis. It is concluded that hemodilution is not the essential cause of natriuresis in the present volume expansion experiments, and that the amount of Na retained during saline loading determines the Na excretion rate in some unknown manner. The implication of regression coefficient between Na retention and Na excretion is discussed as a characteristic value in the Na homeostatic mechanism of the organism.

• International Heart Journal刊行会の論文

著者

• Nagasaka Masato

  1st Dept. Of Med. Facul. Of Med. Univ. Of Tokyo

• NAGASAKA Masahito

  First Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• HONDA Katsunori

  First Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• KINOUCHI Takashi

  First Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• NAKAMURA Kazumichi

  First Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• Nagasaka Masahito

  1st Dept. Of Med. Facul. Of Med. Univ. Of Tokyo

• Nagase Mitsumasa

  Univ. Of Tokyo 1st Dept. Of Intern. Med.

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