It is not a simple infection of the uterus that can be treated with antibiotics, and it can cause kidney damage and death if not promptly treated. (americanmanchester.org)
She was diagnosed with pyometra (a life threatening infection of the uterus which usually happens in an older dogs). (consumersadvocate.org)
Females may also develop a potentially fatal bacterial infection of the uterus termed pyometra and this can be avoided through a spay. (mcleanvet.com)