(4) Physical Examination of Urine (notes only) (RVSP) Flashcards
Major pigment in urine
Urobilin
3 pigments in urine
Urochrome
Uroerythrin
Urobilin
Pathologic cause of clear red urine
Hemoglobinuria
Myoglobinuria
Non-pathologic cause for clear red urine
Medication
Diet
Contamination
Pathologic cause for cloudy red urine
Hematuria
Non-patholgic cause for cloudy red urine
Menstrual contamination
Pathologic cause for portwine red urine
Porphyrin (lead poisoning, altered Hb synthesis)
Non-pathologic cause for portwine red urine
Medication
Diet
Contamination
Pathologic cause for dark yellow to amber urine
Bilirubin
Non-pathologic cause for dark yellow to amber urine
Concentrated urine
Pathologic cause for yellow-green urine
Oxidation of bilirubin
Non-pathologic cause for yellow-green urine
Contamination
Pathologic causes for blue-green urine
Pseudomonas infection
Melanin
Non-pathologic causes for blue-green urine
Medication
Diet
Pathologic causes for brown to black urine
Homogentisic acid (alkaptonuria) Methemoglobin (acidification)
Non-pathologic causes for brown to black urine
Medication (Metronidazole)
Pathologic causes for ambnormal clarity of urine
Bacteria Renal epithelial cells RBC Abnormal crystals WBC Lipids Lymph fluid Yeast
Non-pathologic causes for abnormal clarity of urine
Fecal contamination Mucus threads Normal crystals Radiographic contrast med. Semen Squamous epithelial cells Talcum powder Vaginal creams
Presence of pus cells in urine
Pyuria
Methods for specific gravity determination
Urinometer
Harmonic Oscillation Densitometry
Refractometer
Reagent strip
Scale reading in urinometer
Lower meniscus
Calibration temperature for urinometer
20°C
Frequency of a sound wave entering a solution changes in proportion to the density of the solution
Harmonic Oscillation Densitometry
Determines the conc of dissolved particles by measuring the refractive index
Refractometer
Value for isosthenuria
1.010
Value for hypersthenuria
> 1.010
Value for hyposthenuria
<1.010
Normal odor of urine
Aromatic
Causes foul, ammonia-like odor of urine
Bacterial decomposition, UTI
Causes fruity/sweet odor of urine
Ketones
Caues maple syrup odor of urine
MSUD
Causes mousy odor of urine
Phenylketonuria
Causes rancid odor of urine
Tyrosinemia
Causes sweaty feet odor of urine
Isovaleric acidemia
Causes cabbage odor of urine
Methionine malabsorption
Causes bleach odor of urine
Contamination
Odor caused by bacterial decomposition or UTI
Foul, ammonia-like
Odor caused by ketones
Sweet, fruity
Odor caused MSUD
Maple syrup
Odor caused by phenylketonuria
Mousy
Odor caused by tyrosinemia
Rancid
Odor caused by isovaleric acidemia
Sweaty feet
Odor caused by methionine malabsorption
Cabbage
Odor caused by contamination
Bleach