Temporary sacral nerve stimulation alters rectal sensory function: a physiological study.

Background: The indications for sacral nerve stimulation are increasing, but the mechanism remains poorly understood.

Objective: This study aimed to examine the effect of sacral nerve stimulation on rectal compliance and rectal sensory function.

Design: This was a prospective study.

A review of urinary stone analysis techniques.

Knowledge of the chemical composition and structure of urinary stones is of great value in the choice of treatment and prevention of recurrence. This is a brief review and a comparative study of the principles and practical application of various chemical and physical techniques used for urinary stone analysis. The different methods of classifying and grouping urinary stones by results of chemical analytic techniques are, also, compared and evaluated.