Mineralogical Studies of Urine: The Relationship of Apatite, Brushite and Struvite to Urinary pH

In vitro Study on the Mechanism of Ammonium Chloride on the Prevention of Urolithiasis in Fattening Cattle

“…ELLIOT et al 9) also reported that the solubility of magnesium ammonium phosphate increased with increasing hydrogen ion concentration As previously reported4), urine pH values were decreased in pH ranges from 0.8 to 1.4 by the administration of ammonium chlorid in wethers.…”

Predicting the Need for Radiologic Imaging in Adults with Febrile Urinary Tract Infection

“…Furthermore, the clinical prediction rule consists of readily available patient characteristics, which should make it easily applicable to routine practice of EDs. Finally, the prediction rule is based on factors that are biologically correlated with complicating stones in UTI [24][25][26]. Therefore this prediction rule may also be useful in other settings.…”

“…The selection of potential predictors was based on known risk factors for complicated outcome of febrile UTI, such as the development of struvite stones. Therefore, a history of urolithiasis was included, as was a urine pH у7.0, because struvite will only precipitate in an environment with a pH of at least 7.2 [14,[24][25][26]. In addition, the glomerular filtration rate (GFR) may be halved once a pyelum is completely obstructed.…”

Hemiacidrin: A Useful Component in the Treatment of Infectious Renal Stones

“…Magnesium ammonium phosphate and carbonate apatite which are the most common components of infectious stones [8] are highly soluble at a low pH [9], In this respect a 10% hemiacidrin solution with a pH of approximately 3.5-4.0 is of interest, because of a less irritating effect on the urothelium than stone-dissolving solutions of a different composition [10], Hemiacidrin was introduced to the clinical treatment of infectious stones in 1959 [4]. However, because of a number of serious complications [11] the substance was withdrawn from use in the renal pelvis by the Food and Drug stone composition and detailed information in this re spect is therefore of great importance.…”