Recurrent Urinary Tract Infection
In studies by Professor Haylen (reference), a postvoid residual over 30mls was the only identifiable risk factor for recurrent UTI. This, in turn, may be related to some of the causes mentioned in the voiding dysfunction section.
Medical treatment would involve the introduction of UTI prevention (prophylaxis). This might involve an initial course of antibiotics followed by some longer-term urinary antiseptic tablets. Often Hexamine (Hiprex), a very safe urinary antiseptic is used, desirably taken with Vitamin C to improve its efficacy.
Other UTI prophylactic regimens are tailored to a number of and symptoms from the recurrent UTI.
Imaging investigations might, at times, include further urine or blood tests, an ultrasound or X-ray of the kidneys and urinary tract. An examination of the bladder under anaesthetic (cystoscopy) might be required to eliminate any causes of the recurrent UTI within the bladder. Surgery might occur if there are surgical causes of a high residual.
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