Nursing 107 Exam #4 Flashcards
What are normal components of urine?
Water, sodium, chloride, potassium, calcium, bicarbonate, urea, creatinine
What components should not be in urine?
Glucose, protein, blood
What does very pale yellow urine represent?
Diluted urine
What does dark amber urine represent?
Concentrated urine
What does Dark red/brown urine represent?
Blood in urine
What does tea brown colored urine represent?
Bilirubin in urine
What does green colored urine represent?
Gentimycin (antibiotic)
What does orange colored urine represent?
pyridium
What does red urine represent?
rifampin & myoglobin
What does smokey colored urine represent?
Red blood cells
What does cloudy turbidity of urine mean?
infection, high levels of urinary protein
What is the normal urine specific gravity?
1.005-1.030
What causes a specific gravity of less than 1.005 (diluted urine) mean?
Diuretics, fluid overload, diabetes insipidus
What causes a specific gravity of more than 1.030 (concentrated urine)
Dehydration, SIADH, decreased renal perfusion
What is the average and normal pH of urine?
Average = 6 Normal range (4.6-8)
Why do changes occur in the pH of urine?
Diet, medications, acid base imbalance, altered renal function
What does the positive finding of protein in urine mean?
Renal disease, stress, infection, and strenuous exercise
What does glucose in urine mean?
Reflects hyperglycemia in the blood
What happens when the blood sugar >180?
The renal threshold for what kidneys can save has been exceeded
What does urine that is positive for ketones mean?
Incomplete metabolism of fatty acids
What causes ketones in urine?
DKA, prolonged fasting, anorexia nervosa, adkins diet (high protein that causes the body to breakdown fats for fuel)
What causes the urine to test positive for nitrites?
Presence of nitrite-forming bacteria including E. coli, Citrobacter, Enterobacter, Klebsiella, Proteus, Pseudomonas, Salmonella & some species of staphylococcus
What is the normal reading of RBC in urine?
0-2 per high power field
What causes a increased reading of RBC in urine?
catheterization, menses, abnormal tumors, stones, trauma, glomerular disorders, cystitis, or bleeding disorders