Ch. 6 - Casts Flashcards Preview

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Flashcards in Ch. 6 - Casts Deck (19)
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0

These are the only elements found in the urinary sediment that are unique to the kidney.

Casts

1

Casts are formed within the lumens of the _____

Distal convoluted tubules
Collecting ducts

2

Examination under the microscope of sediments for the identification of casts is performed using what type of objective?

Low-power objective

3

Major constituents of casts

Tamm-Horsfall protein

4

A glycoprotein secreted by the RTE cells

Tamm-Horsfall protein

5

Term used to describe the presence of urinary casts

Cylindruria

6

What is the most frequently seen cast?

Hyaline casts

7

Pathologically, hyaline casts are increased during _____

Acute glomerulonephritis
Pyelonephritis
Chronic renal disease
Congestive heart failure

8

Hyaline casts produces what color when stained with Sternheimer-Malbin stain?

Pink

9

Presence of ____ casts shows bleeding within the nephron. These are primarily associated with damage to glomerulus (glomerulonephritis).

RBC

10

RBC casts associated with glomerular damage are usually associated with what diseases?

Proteinuria
Dysmorphic erythrocytes

11

Presence of ____ casts in the urine signifies infection or inflammation within the nephron

WBC

12

WBC casts are most frequently associated with what disease?

Pyelonephritis

13

This type of cast contains bacilli both within and bound to the protein matrix and is seen in pyelonephritis

Bacterial casts

14

Casts containing RTE cells represents the presence of _____, producing urinary stasis along with disruption of tubular linings.

Advanced tubular destruction

15

Casts seen in conjugation with oval fat bodies and free fat droplets in disorders causing lipiduria.

Fatty casts

16

Fatty casts are most frequently associated with the _____.

Nephrotic syndrome

17

Casts that are representative of extreme urine stasis, indicating chronic renal failure.

Waxy casts

18

Often referred to as renal failure casts; represent extreme urine stasis.

Broad casts