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URINALYSIS AND BODY FLUIDS QUESTIONS AND ANSWERS (100% PASS) $13.49   Add to cart

Exam (elaborations)

URINALYSIS AND BODY FLUIDS QUESTIONS AND ANSWERS (100% PASS)

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URINALYSIS AND BODY FLUIDS QUESTIONS AND ANSWERS (100% PASS) Lecithin: sphingomyelin ratio (L:S Ratio)- what is the purpose, and the L:S ratio. - ️️ Purpose= Assessment of *fetal lung maturity* Method= Thin layer *chromatography*. Comment= L:S ratio *>2.0 signifies maturity* Foam stabi...

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  • August 16, 2024
  • 69
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Urinalysis and Body Fluids
  • Urinalysis and Body Fluids
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OliviaWest
©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AM



WEST VIRGINIA UNIVERSIRTY- ( WV) : 26506

URINALYSIS AND BODY FLUIDS QUESTIONS AND
ANSWERS (100% PASS)


Lecithin: sphingomyelin ratio (L:S Ratio)- what is the purpose, and the L:S ratio. -

✔️✔️Purpose= Assessment of *fetal lung maturity*




Method= Thin layer *chromatography*.




Comment= L:S ratio *>2.0 signifies maturity*


Foam stability index (shake test) - ✔️✔️Purpose= assessment of *fetal lung maturity*.




Method= Shake with *95% ethanol*.




Comment= Foam stability index= tube with *the highest ethanol* volume fraction that

will result in a stable ring of *bubbles at the meniscus* after shaking. An index of *0.48*

is comparable with an *L:S ratio of 2.0*


Amniotic fluid bilirubin - ✔️✔️Purpose=Diagnosis of *hemolytic disease of the newborn*.



1

,©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AM



WEST VIRGINIA UNIVERSIRTY- ( WV) : 26506


Method= *Direct spectrophotometric* scan from *365-550* nm.




Comment= Bilirubin has peak absorbance at *450*nm. A baseline is drawn connecting

the 365 and 550 nm points. The change of a 450 is to compared to gestational age to

determine severity of disease. *The specimen must be protected from light, blood and

medium interfere*.


Alpha fetoprotein (AFP) - ✔️✔️Purpose= Diagnosis of *open neural tube defects*.




Method= *Immunologic* method.




Comment= High levels with *anencephaly, Spina bifida, hydrocephaly.*


CHEMICAL URINALYSIS BY REAGENT STRIP (ASCP) - ✔️✔️


pH


Normal=




Significance= (3)




2

,©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AM



WEST VIRGINIA UNIVERSIRTY- ( WV) : 26506


Principle=




Source of error:


a. Decrease


b. Increase:




-Comment= - ✔️✔️Normal= First AM: *5-6* (acidic), random: 4.5-8.0 (alkaline)




Principle= Double buffer system.




Significance= useful in evaluation of


1. *acid base balance


2. management of UTI


3. renal calculi*.




3

, ©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Saturday, August 3, 2024 7:34 AM



WEST VIRGINIA UNIVERSIRTY- ( WV) : 26506
Source of error:


a. Decrease: *Acid runner* from *protein square*.


b. Increase: Specimen *left at room temperature* too long.




Comment= Acid with protein/meat diet. Alkaline with vegetarian diet.


Protein




Normal=




Principle=




Significance= (1)




Comment= - ✔️✔️Normal= Negative, trace.




Principle=Protein- error of indicator.




4

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