Abstract
By employing a clinical body counter and the long-lived gamma-ray emitter Na22, a method for studying sodium metabolism in human subjects has been developed which appears to be superior to the conventional balance techniques. The clinical body counter is composed of a 4-by 8-inch sodium iodide crystal which is connected to a 400-channel analyzer. Miller’s chair and geometry were used for the measurements. At the start of the study a tracer dose of 15 µc of Na22 was administered orally. The exchangeable body sodium was determined from Na22 body retention (as percentage of dose) and serum sodium specific activity (percentage of dose/mEq). The effect of polythiazide and quinethazone upon the body exchangeable sodium was compared in normal subjects and patients with cardiac and renal edema. No significant difference was observed in the diuretic effect of polythiazide and quinethazone in normal subjects. In the groups of cardiac and renal patients the diuretics used produced changes of the body exchangeable sodium.
Footnotes
- Received August 2, 1966.
- Accepted November 15, 1966.
- © 1967 by The Williams & Wilkins Company
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