Hyponatremia and signals the kidney to bring back sufficient solute-free water from the fluid in the kidney tubules to dilute the serum sodium back to normal, and this turns off the osmoreceptors in the hypothalamus. Also, thirst is stimulated. Normally, when mild hyponatremia begins to occur, that is, the serum sodium begins to fall below 135 mEq/L, there is no secretion of ADH, and the kidney stops returning water to the body from the renal tubule. Also, no thirst is experienced. These two act in concert to raise the serum sodium to the normal range. Hyponatremia occurs 1) when the hypothalamic-renal
Scarlet fever serum Scarlet fever serum Scarlet fever serum was used beginning in November 1900 after its development in the Sero-Therapeutic Laboratory of Rudolph Hospital in Vienna, Austria. The serum was taken from the blood of horses. Infected children were injected in their abdominal skin by Dr. Paul Moser. Mortality rates from scarlet fever declined significantly following the use of the blood serum. Moser at first used scarlet fever serum primarily on the most severely sick persons. After achieving positive results it was applied in the first or second day following contraction of scarlet fever. In many cases the children treated demonstrated great