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Am J Physiol 208: 537-540, 1965;
0002-9513/65 $5.00
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Early increase of plasma potassium in hyperventilation

Enrique S. Blesa 1, Norberto C. González 1, and Horacio E. Cingolani 1

1 Instituto de Fisiología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, República Argentina

Plasma potassium concentration was determined in arterial and in portal, hepatic, and peripheral venous blood during acute respiratory alkalemia. It was found that passive hyperventilation produces an increase in plasma potassium, reaching peak values after 15 min. The hyperkalemia is due to potassium release in the prehepatic splanchnic territory. The liver apparently plays no part in producing it, while muscular territories take up potassium.

Key Words: respiratory alkalemia • hyperkalemia • intestine

Submitted on April 20, 1964






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