Sep 1, 1975

Isotopic study of fluid and electrolyte disturbances in decompensated chronic respiratory insufficiency (author's transl)

Bulletin De Physio-pathologie Respiratoire
F WattelB Raviart


The study of fluid and electrolyte disturbances by isotope radiodilution method is carried out in 22 patients with chronic respiratory insufficiency and cardiac failure. The simultaneous measurements of hydro-ionic compartments have been carried out with tritiated water (HTO), labelled sodium (22Na), labelled potassium (42K) and labelled bromine (82Br). From these measurements, the various water spaces are calculated: total water (ET) and extracellular fluids (LEC), also exchangeable electrolytes: sodium (NaE), potassium (KE), chlorine (ClE) and derived values. Results are compared to corresponding values in controls with the same obesity index. Patients with respiratory insufficiency show a fluid and sodium rise, similar to that found in cardiac failure and denutrition. The (NaE + KE)/ET ratio is not significantly decreased and the natremia is only slightly lower. There is no real potassium depletion in most patients.

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Mentioned in this Paper

Extracellular Space
Potassium Depletion
Extracellular Fluid
Respiratory Failure
Electrolytes Measurement, Serum
Water-Electrolyte Imbalance

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