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More than 90 percent of dogs with struvite stones have an associated urease-producing bacterial infection in the urinary tract, but in cats struvite stones usually form in sterile urine. [7] The appearance of the stones vary from large solitary stones to multiple smaller stones. They can assume the shape of the bladder or urethra. Struvite crystals
Struvite (magnesium ammonium phosphate) is a phosphate mineral with formula: NH 4 MgPO 4 ·6H 2 O. Struvite crystallizes in the orthorhombic system as white to yellowish or brownish-white pyramidal crystals or in platy mica-like forms. It is a soft mineral with Mohs hardness of 1.5 to 2 and has a low specific gravity of 1.7. It is sparingly ...
High urinary pH is associated with developing struvite crystals, dysuria, hematuria and obstructing the urinary tract of dogs. Breakdown of amino acids has an effect on the acidity of the urine. Plant based diets typically contain fewer of the acidifying amino acids than meat based ones. [9]
In some cases bladder stones do not cause any symptoms and are discovered as an incidental finding on a plain radiograph. However, when symptoms do occur, these may include severe lower abdominal and back pain, difficult urination, frequent urination at night, fever, painful urination and blood in the urine. The majority of individuals who are ...
Crystalluria refers to crystals found in the urine when performing a urine test. Crystalluria is considered often as a benign condition and as one of the side effects of sulfonamides and penicillins. The main reason for the identification of urinary crystals is to detect the presence of the relatively few abnormal types that may represent a ...
Do not allow a dog to gulp large quantities of water. If a dog is panting excessively and then drinks a lot of water, large amounts of air may be swallowed along with the water and this can cause an equally life-threatening case of gastric dilatation volvulus (bloat) in the stomach. [172]
Plesiosaur gastroliths from Tropic Shale. A gastrolith, also called a stomach stone or gizzard stone, is a rock held inside a gastrointestinal tract.Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth.
In some cases crystals do not form quickly and the solution remains supersaturated after cooling. This is because there is a thermodynamic barrier to the formation of a crystal in a liquid medium. Commonly this is overcome by adding a tiny crystal of the solute compound to the supersaturated solution, a process known as "seeding".