Abstract
Infection stones are caused by bacteria that possess the enzyme urease which increase the urine pH resulting in crystallization of carbonate apatite (with pH > 6.8) and magnesium ammonium phosphate (struvite) when the pH rises above 7.2. They account for 10–15 % of urinary calculi and carry significant morbidity and mortality if left untreated. Renal dysfunction from chronic obstruction and infection may occur if left untreated. The first principle of treatment is complete removal of all of the infected stone. Percutaneous nephrolithotomy is the treatment of choice for large stone burdens which are typical for infection stones. Secondly, antibiotics must be used pre- and post-operatively to sterilize the urine and ensure that the urine will remain sterile even after antibiotic therapy is completed. Lastly prevention of recurrent stones is key and is achieved by preventing infection and ensuring that all stones are removed. Routine imaging must be performed frequently as these stones may form rapidly even within 4–6 weeks.
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Chew, B.H., Flannigan, R., Lange, D. (2015). Struvite Stones, Diet and Medications. In: Monga, M., Penniston, K., Goldfarb, D. (eds) Pocket Guide to Kidney Stone Prevention. Springer, Cham. https://doi.org/10.1007/978-3-319-11098-1_12
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DOI: https://doi.org/10.1007/978-3-319-11098-1_12
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