Summary
The bacteriological status of the pre-operative urine, removed calculus and the pelvic urine was studied in 63 consecutive patients undergoing removal of intrarenal calculi. The overall infection rates in the pre-operative urine, removed calculi and pelvic urine were 29%, 38% and 30% respectively. In patients with staghorn calculi, 58% of patients had an infected pre-operative M.S.S.U., and 82.5% of removed calculi demonstrated significant bacterial growth, with Proteus mirabilis being the predominant organism isolated. In patients with single or multiple oxalate calculi, 17% had an infected pre-operative M.S.S.U., and 22% of removed calculi demonstrated a significant bacterial growth. The findings would indicate that the presence of a positive M.S.S.U. in a patient with a renal calculus is an indication for surgical removal.
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Lewi, H.J.E., White, A., Hutchinson, A.G. et al. The bacteriology of the urine and renal calculi. Urol. Res. 12, 107–109 (1984). https://doi.org/10.1007/BF00257174
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DOI: https://doi.org/10.1007/BF00257174