Abstract
We measured serum and skeletal muscle Na and K by flame photometry and muscle water by dessication in 49 rabbit pups at birth and 39 at 72 hours of age.
Muscle Na was greater in animals whose postnatal weight gain was relatively low, a pattern similar to that which we have described for total body and muscle water (Pediatr Res 14:1122, 1980). This decrease in muscle Na coincident with a rise in serum Na suggests that in the first 72 hours of life Na is mobilized from the intra cellular space.
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Coulter, D., Lapine, T. POSTNATAL CHAHGES IN SKELETAL MUSCLE AND SERUM SODIUM IN THE NEONATAL RABBIT PUP - EVIDENCE FOR AN INTRA-CELLULAR SODIUM RESERVOIR. Pediatr Res 18 (Suppl 4), 318 (1984). https://doi.org/10.1203/00006450-198404001-01348
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DOI: https://doi.org/10.1203/00006450-198404001-01348
