Elimination & Detox 2: Group Presentation Qs Flashcards
Which of the following correctly matches the plant & its toxin (plant - toxin) that corresponds to enzootic hematuria in cattle?
* Tiger lily - cardiac glycoside
* Tiger lily - ptaquiloside (pta)
* Bracken fern - ptaquiloside (pta)
* Bracken fern - tartaric acid
BRACKEN FERN - PTAQUILOSIDE (pta)
What gross lesions are associated with enzootic hematuria in cattle?
* Neoplasms of the urinary bladder
* Atrophy of the bladder wall
* Extramural neoplasms compressing the urethra
* Ureteral stricture from chronic inflammation
NEOPLASMS OF THE URINARY BLADDER
In which part of the kidney does melamine toxicity affect?
A) Glomerulus
B) Interstitium
C) Tubules
D) Arterioles
C = TUBULES
What is the primary physiological cause of melamine nephrotoxicity?
A) Stones caused by melamine concentration
B) Acute tubulitis
C) Melamine and cyanuric acid crystals
D) Glomerular necrosis
C = MELAMINE & CYANURIC ACID CRYSTALS
A 4 year old MC Cairn terrier comes into your clinic with a 2 week history of vomiting and diarrhea and some other non-specific signs. Based on your exam, the history, and some initial diagnostics, you are worried about a liver problem. What is the BEST way to differentiate between microvascular dysplasia and portosystemic shunts?
● CBC/Chem
● Urinalysis
● Protein C analysis
● Abdominal radiograph
PROTEIN C ANALYSIS
What comorbidity is commonly seen alongside microvascular dysplasia?
● Portosystemic shunt
● Chronic kidney disease
● Pancreatitis
● Congestive heart failure
PORTOSYSTEMIC SHUNT
Which of the following is the preferred diagnostic tool for portal vein thrombosis (PVT)?
A. PT/PTT
B. Abdominal Radiographs
C. CTangiography
D. Doppler Ultrasound
C = CT ANGIOGRAPHY
Which of the following clinical findings most commonly support the diagnosis of an acute PVT (vs chronic)?
A. Signs of hypovolemic shock
B. Inappetance
C. Ascites
D. Elevated hepatic leakage enzymes
A = SIGNS OF HYPOVOLEMIC SHOCK
What is the mechanism of toxicity of Phenobarbital?
A) Reduced prostaglandin synthesis leading to reduced renal blood flow and tubular
necrosis in the kidneys
B) Induction of cytochrome P450 mediated oxidation in the liver when glucuronidation
and sulfation pathways are saturated, leading to the production of N-acetyl-p-
benzoquinone imine (a toxic metabolite)
C) Induces Cytochrome P450 enzymes causing accelerated metabolism of other
drugs, dietary components, or environmental toxins leading to secondary
hepatotoxicity
D) Increases renal calcium and phosphorus reabsorption in distal tubule, leading to
hypercalcemia and hyperphosphatemia, therefore increasing risk for soft tissue
mineralization
C = INDUCES CYTOCHROME P450
Is Phenobarbital toxicity idiosyncratic or dose-dependent?
A) Idiosyncratic
B) Dose-dependent
C) It has qualities of both idiosyncratic and dose-dependent toxicity
D) Neither idiosyncratic nor dose-dependent
C = IT HAS QUALITIES OF BOTH IDIOSYNCRATIC & DOSE-DEPENDENT
What is the main mechanism of action for aminoglycoside nephrotoxicity?
i. Crystal Formation in the collecting tubules.
ii. Renal tubule toxicity.
iii. Decrease in GFR
iv. Decrease in renal blood flow leading to ischemia
II = RENAL TUBULE TOXICITY
Which of the following would you not give to a dog who is prescribed Amphotericin B to decrease the risk for AKI?
i. Prophylaxis IV fluids
ii. Lipid preparation of Amphotericin B
iii. Combination therapy
iv. Supplemental amino acids
IV = SUPPLEMENTAL AMINO ACIDS
Which region of the hepatic lobule is first affected by chronic passive congestion (nutmeg liver)?
a) Periportal
b) Midzonal
c) Centrilobular
d) Entire hepatic lobule
C = CENTRILOBULAR
Which of the following is NOT a part of the pathologic changes seen in nutmeg liver?
a) Hepatocellular death
b) Blood pooling in sinusoids
c) Fibrosis
d) Microhepatica
D = MICROHEPATICA
Which of the following trace minerals prevent dietary copper absorption in sheep and by what mechanism?
-Cobalt, forms thiomolybdate complexes that bind to copper and prevents absorption
-Manganese, binds copper directly and prevents absorption
-Molybdenum, forms thiomolybdate complexes that bind to copper and prevents absorption
-Iodine, binds copper directly and prevents absorption
MOLYBDENUM that forms THIOMBOLYBDATE COMPLEXES
Which of the following is NOT a viable treatment option for copper toxicity in sheep?
- Ammonium tetrathiomolybdate to reduce copper absorption
- Zinc acetate to reduce copper absorption
- Penicillamine to increase copper excretion
- Vitamin C to increase copper excretion
VITAMIN C TO INCREASE COPPER EXCRETION
Which area of the renal system is primarily affected by familial fanconi syndrome?
a. Glomerulus
b. Proximal renal tubules
c. Distal renal tubules
d. Renal interstitium
B = PROXIMAL RENAL TUBULES