Kidneys/UA Flashcards
What are the four ways to collect specimens for urinalysis
Voided, bladder expression, catheterization, Cystocentesis
Why is a voided sample the best to check for Hematuria
Because you know that the blood is not your fault
What is the advantage of cystocentesis
Avoids any risk of urine contamination by blood or bacteria
Would your shipping Urine to the lab which tube do you use
Red top tube
What do you do if you’re not going to examine the urine right away
Refrigerate it
What is the normal output of urine
20 to 40 mL per kilogram per day
What is Pollakiurua
Small amounts of urine
What is polyuria
Frequent urination
What are some common causes of abnormal turbidity
Increased cells, numerous crystals, bacteria, lipiduria, mucus, semen, fecal contamination
What are three ways to determine urine specific gravity
Refractometer, urinometer, reagent test strip
What are the five functions of the kidney
- Water balance 2. Filter out waste 3. Acid-base balance 4. Erythropoietin 5. It involved a blood pressure maintenance
What is Concentrated urine
Functional kidneys: USG> 1.035 (dog) Or >1.040 (cat)
What is hyposthenuric
Dilute urine: USG
What is moderately concentrated urine
USG 1.013-1.029 (dog) or 1.034 (cat)
What is Isothenuria
1.007-1.012. When the urine is the same osmolarity as possible. Neither concentrated or diluted
What are the three rules for reagent strips
Store reagent strips and original container at room temperature. Avoid exposing reagent strips moisture, sunlight, heat. Do not touch test areas of reagent strip
What are the factors that may decrease the pH of urine
Fever, starvation, high-protein diet, excessive muscular activity, administration of certain drugs
What is increased pH due too
Alkalosis, high Fiber diets, urinary tract infection
Where do protein of the urine come from
Cystitis, high ph (false positive), fever, concentrated urine
What does glucosuria and normoglycemia mean
Suggests tubular damage:
Lepto
Antifreeze
Fanconi syndrome
Why are ketones formed
Starvation, peak lactation in dairy cattle, diabetes mellitus
What do ketones in the body cause
Central nervous system depression and acidosis.
What about bilirubin in cats on urine dipstick
Should always be negative. Bilirubinemia in cats is pathologic
When do we see Bilirubinuria
Increased destruction of red blood cells (hemolytic anemia), liver disease, obstruction of bile flow from the liver, clinical jaundice
How do you change The microscope to see urine
Lower the condenser and closedown the substage iris diaphragm
For the urinalysis what would you see in low magnification
Casts, large crystals, debris, parasitic ova
What would you see under high magnification in a urinalysis
Leukocytes, erythrocytes, epithelial cells, far droplets, small crystals, sperm
How big are red blood cells in the microscope
7um
What happens to red blood cells when you have a high specific gravity
The red blood cells become crenated
What happens to red blood cells in urine with low specific gravity
The cells may be lysed and not visible
Describe fat droplets
Found in normal dog and cat sediments. Focus up and down and you could visualize their perfectly round appearance
What do increased numbers of transitional epithelial cells indicate
Urinary tract infections
Where are casts formed
In the lumen of the distal and collecting tubules
Describe Casts
Cylindrical structures with Parallel sides present an acid urine
Normal casts
Hyaline casts
What are the abnormal casts
Granular casts Epithelial casts Leukocyte casts Erythrocytes casts Waxy casts Fatty casts
When do you see epithelial cell casts
Acute nephritis
Degradation of renal epithelium
When do you see a leukocyte cast
Pyelonephritis
When do you see a waxy cast
Severe degeneration of renal tubules
When do you see a fatty cast
In cats with renal disease
When do you see a struvites
In basic urine
When do you see amorphous crystals
In acidic urine
When do you see calcium carbonate crystals
In horses,
Or rabbits and goats
When do you see ammonium biurate crystals
In liver disease
When do you see calcium oxalate dihydrate crystals
In acidic urine
When do you see calcium oxalate monohydrate crystals
AntifreeZe poisoning
When do you see uric acid crystals
Associated with dalmatians
When do you see leucine or tyrosine crystals
Liver disease
When do you see Cystine crystals
Renal tubular dysfunction
What happens if there’s too much alcohol at the venipuncture site
Lyse the red blood cells
What happens if you put too much pressure with the syringe
Collapse the vein
What hormone is released with excitement
Epinephrine
What hormone is released with stress
Cortisol
What Effect does epinephrine have on red blood cells
Increase red blood cells due to splenic contractions
What does cortisol do to white blood cell
Double the neutrophils or in cats sometimes it’s lymphocytes
Describe what epinephrine does to the body
Increases white blood cells, red blood cells, physiologic neutrophils, polycythemia
What affect does cortisol have on the body
Increased neutrophils,
decrease eosinophils,
increased lymphocytes
What does the coagulant EDTA do
Binds calcium
What is plasma made up of
90% water, 10% dissolved constituents: proteins, electrolytes etc
What is serum made up of
It is plasma minus fibrinogen and clotting proteins
How does heparin work
It has antithrombin
What can heparin cause
Clumping of wbc
What happens if you underfill the EDTA container
It can dilute blood
What do grey top tubes do
Preserve glucose levels
What are sodium citrate tubes used for
It is reversible anticoagulant and these tubes are used for coagulation assays. Works by binding calcium
What happens to blood when it’s in the refrigerator
The more Clumped platelets appear
How much sample volume do you need
Enough to run a biochem three times
What does a complete blood cell count do
Red blood cell, PCV, total protein, blood differential, reticulocyte, hemoglobin concentration, red blood cell indices
Hematocrit tubes should be within what percentage of each other
2%
What happens the pact cell volume when the animal is dehydrated
Decreased plasma increase total protein
What percent of plasma is protein
Five and 10%
What does albumin do
Retains blood pressure
What is a normal plasma protein for adult mammals
6-8 gm/dl
What is the normal plasma protein for pediatric
4-6gm/dl due to decreased antibodies
What is a decreased total protein do to
Protein losing enteropathy, chronic blood loss, liver disease, starvation
What is elevated total protein do to
Dehydration
When you’re dehydrated what happens
Increase in globulin
What percentage of total protein is albumin
35 to 50%. Losses occur in kidney disease
How will the ratio change with chronic inflammation and the cat or dog
Increased globulin and decreased ratio
How do you estimate white blood cell count
10 times objective equals average number for field times 100