Body Fluids Flashcards

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1
Q

What term describes the angle of light as it passes through a urine sample?
What property will increase the angle?

A

Refractive index

Density

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2
Q

Normal GFR and daily output of urine

A

GFR = 120 ml/min (170-190 L of fluid per day)

600-2000 ml/day; 1500 ml/day average

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3
Q

Oliguria

A

decreased output

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4
Q

Anuria

A

no output (renal failure)

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5
Q

Polyuria

A

increased output

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6
Q

Dysuria

A

Dysuria -

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7
Q

Nocturia

A

increased output at night

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8
Q

What causes urine to be black?

A

Melanin or Homogentisic acid

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9
Q

What is the principle of pH dipstick?

A

Double indicator system

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10
Q

What is the principle of protein dipstick?

A

“Protein error of indicators”

Specific for albumin detects no other protein

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11
Q

What is the principle of Glucose dipstick?

A

Glucose oxidase double sequential enzyme reaction, specific for glucose

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12
Q

What is the principle of Ketones dipstick?

A

Sodium nitroprusside reaction

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13
Q

What is the principle of Blood dipstick?

A

Pseudoperoxidase activity of hemoglobin

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14
Q

What is the principle of Urobilinogen dipstick?

A

Ehrlich’s reagent

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15
Q

What would be the bilirubin and urobilinogen results on a patient with Hemolytic anemia?

A

Bilirubin negative, Urobilinogen 3+ Positive

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16
Q

What is the principle of Nitrite dipstick?

A

Greiss test

17
Q

What is the principle of LEUKOCYTE ESTERASE dipstick?

A

Esterase enzyme present in granulocytic WBCs reacts with an acid in the pad to create a purple color

18
Q

What is the principle of SPECIFIC GRAVITY dipstick?

A

pK change of polyelectrolyte

19
Q

At what plasma level will glucose begin to appear in urine? What term describes this phenomenon?

A

160 mg/dL

Renal threshold