SIADH and urine specific gravity
SIADH is caused by excessive antidiuretic hormone. So the pt. will over "anti" diurese--i.e., the kidneys will resorb too much water. So, there will be a greater than normal level of water in the blood. This excess water dilutes the blood, so the sodium level will be lower than normal. At the same time, the water came from the urine, so the ...
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