Thanks for writing in. Sepsis is defined as a severe, potentially fatal illness caused by infection. "Urosepsis" is an imprecise term denoting sepsis from a urinary source. A urinary-tract infection generally begins after bacteria ascend to the bladder through the urethra. In some cases, the infection travels further, affecting the kidneys. In some patients with pyelonephritis, the illness progresses even further, with spread of the bacteria into the bloodstream. Such an illness can be fatal without prompt antibiotic therapy. Once the bacteria enter the bloodstream, the blood pressure can fall, depriving various organs of oxygen, including the heart and the brain. That is the reason why she could have been affected by a TIA.
At some point, the patient may need strong medications called vasopressors to keep the blood pressure up, and ventilator support to keep the lungs working. The most important aspect of treatment is prompt antibiotic therapy. So, see what the culture reports say and start an appropriate antibiotic.
Coming recurrence of UTI, this could be due to decreased immunity, age, blockage of urinary tract with a stone, non compliance with antibiotic treatment etc.
I would suggest that you discuss all these possible options with your urologist for confirmation of diagnosis and proper treatment.