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Bladder stones or uroliths are a common occurrence in animals, especially in domestic animals such as dogs and cats. [1] Occurrence in other species, including tortoises, [2] has been reported as well. The stones form in the urinary bladder in varying size and numbers secondary to infection, dietary influences, and genetics.
Struvite urinary stones and crystals form readily in the urine of animals and humans that are infected with ammonia-producing organisms. They are potentiated by alkaline urine and high magnesium excretion (high magnesium/plant-based diets). They also are potentiated by a specific urinary protein in domestic cats.
All forms of portosystemic shunts produce various neurological, gastrointestinal, and urinary symptoms. [3]Symptoms of congenital PSS usually appear by six months of age [4] and include failure to gain weight, vomiting, and signs of hepatic encephalopathy (a condition where toxins normally removed by the liver accumulate in the blood and impair the function of brain cells) such as seizures ...
Some stones are too large even for cystoscopic treatment and may require open cystotomy, in which an incision is made in the bladder and the stones are removed manually. For children with urinary stones, the evidence supporting treatment options is very weak and high quality trials are necessary to help guide clinical management. [17]
Cystoscopy has similar indications in animals, including visualisation and biopsy of mucosa, retrieval or destruction of urinary bladder stones and diagnosis of ectopic ureters. [9] [10] [11] In turtle and tortoises, cystoscopy has additional value as it permits the visualisation of internal organs due to the thin urinary bladder wall. [12]
It is a disease involving the defective transepithelial transport of cystine and dibasic amino acids in the kidney and intestine and is one of many causes of kidney stones. If not treated properly, the disease could cause serious damage to the kidneys and surrounding organs, and in some rare cases death.
Like the bony pelvis, the renal pelvis (/ ˈ r iː n əl ˈ p ɛ l v ɪ s /) gets its English name via Neo-Latin from the older Latin word pelvis, "basin", as in "wash basin". [4] In both cases the name reflects the shape of the structure, and in the case of the renal pelvis, it also reflects the function.
The cause of acute kidney injury in most cases is ischemic or toxic injury. Mammalian kidneys are susceptible to ischemic injury because mammals lack a renal-portal system , and as a result, vascular vasoconstriction in the glomeruli can lead to decreased blood supply to the entire kidney.