Dintre toate tipurile de cristale, cele de struvit detin o proportie covarsitoare. In formarea lor, pe langa concentratia de magneziu in urina, un rol foarte important il detine pH-ul urinar, struvitii fiind mai solubili in pH acid decat in pH alcalin. Majoritatea cristalelor de struvit se produc in urina sterila, totusi atunci cand exista o complicatie bacteriana cel mai adesea aceasta este reprezentata de Staphylococcus spp.
Lungimea si diametrul variabil al uretrei la mascul fac ca acesta sa fie mai afectat de obstructie uretrala, majoritatea obstructiilor producandu-se la nivelul uretrei peniene.
Diagnosticul in SUF se realizeaza pe baza semnelor clinice si cu ajutorul metodelor complementare precum eco-grafia, radiografia, cistografia, analiza urinei, analiza sangelui, cistoscopia.
Tratamentul e complex si vizeaza in primul rand permeabilizarea uretrei prin sondaj uretero-vezical (in cazul obstructiei) si eliminarea continutului vezical, administrarea de fluide intravenos in cazurile grave, eliminarea eventualei infectii, combaterea hemoragiei daca aceasta exista, diminuarea spasmului de la nivelul sfincterului vezical, folosirea unor agenti de disolutie a urolitilor, realizarea cistoto-miei sau a uretrostomiei.
In functie de tipul de cristale prezente in urina, dieta va fi modificata astfel incat aceasta sa contina cat mai putine din elementele constitutive ale urolitilor, sa creasca sau sa scada pH-ul urinar (pentru a combate precipitarea) si sa creasca volumul urinar.
(Asteptam intrebarile dv. la adresa: urgente_veterinare9331@yahoo.com Telefon urgente veterinare – Bucuresti 9331)
Liviu Harbuz, DVM Ph. D
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