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- W2017683502 abstract "The simultaneous measurement of total minations (Ke at 44 hr 1.93%; Na. at exchangeable potassium and total ex- 24 hr 1.77O/o) appear comparable to or changeable sodium is described using better than the results of previous stud43K and 24Na in 67 patients. Smaller ies. The whole-body radiation dose to doses of radioisotope were used than the patient was estimated at 17 mrad. previously reported, but despite this a Eight patients had independent meas44-hr mixing period was achieved for urements of body potassium (40K), and potassium. The coefficients of variation these were in close agreement with the for duplicate estimations of radioactiv- Ke value. It is felt that 43K should reity (potassium. 2.5%, sodium 1.51%) place 42K for the measurement of total or for exchangeable electrolyte deter- exchangeable potassium in man. S IMULTANEOUS MEASUREMENTS of total exchangeable potassium (Ke) and total exchangeable sodium (Na@) are often required in the assessment of metabolic disease. Until now the isotopes 22Na (Tlh 2.6 yr), 24Na (TG 15 hr) and 42K (TIA 12.4 hr) have been used,le8 but recentIy the use in man of 43K (T4a 22 hr) has been described.9 43K with gamma emission between 0.37 MeV and 0.61 MeV can readily be distinguished from 24Na by gamma counting. The technical procedures are simple, and, despite the longer half-life, the lower beta and gamma ray energies of 43K result in only 70% of the whole body radiation dose per microcurie to the patient when compared with 42K. A technique for simultaneously measuring exchangeable body potassium and sodium using smaller doses of 43K and 24Na than described by previous workers is reported." @default.
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- W2017683502 date "1973-02-01" @default.
- W2017683502 modified "2023-09-29" @default.
- W2017683502 title "Simultaneous measurement of total exchangeable potassium and sodium using 43K and 24Na" @default.
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- W2017683502 doi "https://doi.org/10.1016/0026-0495(73)90263-1" @default.
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