title: The bacteriology of the urine and renal calculi.
abstract: The bacteriological status of the pre-operative urine, removed calcium 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.
mesh_terms: D000328:Adult; D000368:Aged; D001437:Bacteriuria / Q000150:complications / Q000382:microbiology*; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000150:complications / Q000382:microbiology* / Q000652:urine; D008274:Magnesium / Q000652:urine; D017616:Magnesium Compounds; D008297:Male; D008875:Middle Aged; D010070:Oxalates / Q000652:urine; D010710:Phosphates / Q000652:urine; D011513:Proteus mirabilis / Q000302:isolation & purification; D000069877:Struvite
chemical_list: D017616:Magnesium Compounds; D010070:Oxalates; D010710:Phosphates; D000069877:Struvite; D008274:Magnesium