Nurs 115 Exam 4
function of glomerulus - producing an "ultrafiltrate of urine" - final copy -pressure is 2-3x higher than other capillaries function of loop of henle - controls concentration of water. reabsorbs water, solutes, necessities via osmosis. What is not needed is excreted. urinalysis (UA) - PURPOSE: hydration status -approx. 95% water and 5% fluids -measures concentration of urine (specific gravity), weight of particles pH of urinalysis - 4.5-8 (avg 6.0) urine osmolarity (concentration) - "specific gravity" - 1.010-1.025 specific gravity high - dehydration (more concentrated urine) specific gravity low - decreased renal function (unable to concentrate, or too much water intake) urine abnormals - presence of RBCs, WBCs (infection), bacteria, casts, crystals, protein molecules (pregnancy or gluomerular problems), glucose (diabetes), ketones (diabetic ketoacidosis), etc.
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