You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Magnesium-ammonium phosphate stones are usually secondary to urinary tract infection with which of the following: and explain in detail?
Magnesium-ammonium-phosphate stones are usually secondary to urinary tract infection with bacteria that produce urease (primarily Proteus species). The urease hydrolyzes the urea producing ammonia and thereby raising the pH as well as providing the source of ammonia. Eradication of the infection prevents fuher stone formation. After calculi removal, prevention of stone growth is best accomplished by urinary acidification, long-term use of antibiotics, and the use of acetohydroxamic acid (a urease inhibitor that maintains an acid urinary pH). Ref: Obrador G.T. (2009). Chapter 17. Chronic Renal Failure & the Uremic Syndrome. In E.V. Lerma, J.S. Berns, A.R. Nissenson (Eds), CURRENT Diagnosis & Treatment: Nephrology & Hypeension.