Podcast
Questions and Answers
What is the most common type of urolith found in dogs and cats?
What is the most common type of urolith found in dogs and cats?
- Silicate
- Struvite (correct)
- Calcium oxalate
- Cystine
Which pH level is most favorable for the precipitation of struvite crystals?
Which pH level is most favorable for the precipitation of struvite crystals?
- pH less than 5
- pH greater than 7 (correct)
- pH between 4 and 6
- pH around 6
What dietary factor in feline urine contributes to the formation of uroliths?
What dietary factor in feline urine contributes to the formation of uroliths?
- Alkaline urine after meals
- High ammonium concentration (correct)
- Low protein diet
- Increased calcium intake
What is a significant characteristic of struvite uroliths in relation to urination?
What is a significant characteristic of struvite uroliths in relation to urination?
What is a major concern regarding silicate uroliths in cats?
What is a major concern regarding silicate uroliths in cats?
What dietary factor is directly affected by diet, leading to a normally low magnesium content in cats?
What dietary factor is directly affected by diet, leading to a normally low magnesium content in cats?
Which dietary management aim is recommended to dissolve certain stones in cats?
Which dietary management aim is recommended to dissolve certain stones in cats?
What effect does persistent acidemia have on calcium levels in cats?
What effect does persistent acidemia have on calcium levels in cats?
Which nutrient should not be excessively restricted as it can lead to increased calcium absorption due to activated vitamin D in cats?
Which nutrient should not be excessively restricted as it can lead to increased calcium absorption due to activated vitamin D in cats?
What dietary component is recommended to be decreased to help manage urate stones in cats?
What dietary component is recommended to be decreased to help manage urate stones in cats?
Flashcards
High Mg content
High Mg content
A diet with high levels of magnesium can increase the risk of struvite stones in cats due to its effect on urine pH. It's crucial to monitor magnesium intake in cats prone to these stones.
Dietary risk factors for struvite stones
Dietary risk factors for struvite stones
Reduced water intake and a meal-feeding regimen can contribute to the formation of struvite stones in cats by altering urine concentration and pH, making it easier for stones to form.
Low Moisture Diet
Low Moisture Diet
A diet with a low moisture content, often found in commercial dry diets, can increase the risk of struvite stones in cats by contributing to concentrated urine.
High P content
High P content
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High NaCl content
High NaCl content
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Struvite Uroliths
Struvite Uroliths
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Urolithiasis
Urolithiasis
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Urine pH
Urine pH
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Dietary Management of Urolithiasis
Dietary Management of Urolithiasis
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Postprandial Alkaline Tide
Postprandial Alkaline Tide
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Study Notes
Urolithiasis Dietary Management (Dogs, Cats)
- Uroliths are stones in the urinary tract. Removing a stone isn't sufficient; laboratory analysis of the stone is crucial for appropriate dietary management.
Types of Uroliths
- Struvite: Most common (approximately 80% in dogs and cats). Associated with urease-producing bacteria (e.g., Proteus, Staphylococcus). Bacteria decomposition releases ammonia and carbon dioxide, increasing urine pH.
- Calcium oxalate: Also prevalent, particularly in cats, which often do not drink enough water.
- Cysteine: Mostly in middle-aged male dogs.
- Urate: Seen in Dalmatians (no urate → allantoin conversion).
- Silicate: A rarer type.
Aim of Dietary Management
- Reduce recurrence of stone-forming components.
- Dissolve existing stones; reduce relative supersaturation (RSS) of minerals in urine. RSS measures mineral levels in the urine.
- Increased water consumption for urine dilution
Dietary Risk Factors
- Urine pH: Postprandial alkaline tide (increased bicarbonate influx, often from protein). Feline urine has high ammonium levels due to protein intake.
- Urine-protein-excretion: Feline urine generally has high ammonium levels.
- Mineral content: High magnesium (often low in normal cats), high phosphorus (often high enough in normal cats), high chloride and calcium.
- Low moisture content: Commercial dry foods (often high in cereal).
- Feeding regimen: Meal-feeding pattern.
- Low water intake: Critically important, particularly in cats.
Dietary Management - Struvite
- Protein: Controlled levels with high biological value (BV) to reduce ammonium.
- Urine acidifiers: DL-methionine and ammonium chloride (maintain pH 6-6.3 for dissolution).
- Sodium chloride: Increased intake to boost water intake and urine dilution.
- Minerals: Reduced phosphorus, potassium, and magnesium.
Dietary Management - Calcium Oxalate
- Protein: Reduced protein intake.
- Magnesium: Not restricted.
- Potassium citrate: May inhibit calcium oxalate formation.
- Phosphorus: Not overly restricted; phosphorus restriction can stimulate vitamin D activation, increasing intestinal calcium absorption.
Dietary Management - Urate
- Protein: Reduced intake.
- Purines: Lower intake of purine-rich foods.
- Acidifying diet: Avoidance of acidifying diets.
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