After removal of kidney stones, risk factors evaluation and control should always be considered to reduce the frequency of recurrent stone disease in such patients.
The results also evidence a higher scattering for low PSV aggregates, and PCA shows that this relates to their higher sensitivity to wheel speed variability not accounted for by the PSV control stone correcting factor.
It is thus important to elucidate the incidence and management of antiretroviral-associated renal stones, since renal stones are risk factors for chronic kidney diseases (CKDs), an important comorbidity associated with HIV infection and death [ 5– 7].
In addition, using multiple logistic regression analysis, we examined the factors of stone clearance (alcohol etiology, stone location, stone number, stone size, and success/failure of guidewire negotiation).
The crust nature, its degree of interaction with the stone and other factors related to the principle of the cleaning procedures were found as the main variables influencing the effectiveness of the cleaning procedures.
ANN previously has been used for predicting genetic factors in stone disease [7], stone composition [8], spontaneous passage of ureteral calculi [9], and outcome after extracorporeal shock wave lithotripsy (ESWL) [10].
As shown in Table 3, seropositivity for HBsAg, seroposivity for anti-HCV, and the presence of IHD stones were independent factors associated with ICC.
Such difficulties may be related to several factors: large stones, barrel-shaped stones, tapering of the distal common duct, and so forth [ 2, 3].
Possible risk factors for stone formation studied in the past are commonly observed in Qatar.
