OBJECTIVE To evaluate the safety and efficacy of percutaneous cystolitholapaxy (PCCL) under cystoscopic guidance and without fluoroscopy for the management of large or multiple bladder stones. PATIENTS AND METHODS Prospectively collected data were reviewed for patients undergoing PCCL with cystoscopic guidance and without fluoroscopy. Patients with a bladder stone burden of ⩾30 mm were includ...

OBJECTIVE To identify whether stabilization of larger bladder stones would improve the efficacy of combination (ultrasonic/pneumatic) lithotripsy in a phantom bladder stone model for percutaneous cystolithopaxy. MATERIALS AND METHODS Using 1cm phantom Bego stones, a spherical model bladder was used to simulate percutaneous bladder access. A UroNet (US Endoscopy, USA) was placed alongside a Sw...

OBJECTIVE To compare the stone clearance of upper with middle and lower ureteric stones by using ureteroscopic pneumatic lithotripsy. METHODS The study was conducted in the Department of Urology, Liaquat National Hospital, Karachi, from February 2009 to February 2010. A total of 90 patients were selected and divided into three groups of 30, each according to the location of stone in the urete...

Objective: To evaluate success rate, auxiliary procedures and complications associated with ureteroscopic pneumatic lithotripsy of ureteric stones. Materials and Methods: The study was conducted among 100 patients between May 2011 and July 2013. The mean age of the patients was 32 ± 3 years. Ureteroscopic pneumatic lithotripsy was performed using rigid Wolf ureteroscope and Swiss Lithoclast dev...

Discrete particle simulations of column of an aggregate of identical particles impacting a rigid, fixed target and a rigid, movable target are presented with the aim to understand the interaction of an aggregate of particles upon a structure. In most cases the column of particles is constrained against lateral expansion. The pressure exerted by the particles upon the fixed target (and the momen...

Entrainment of underlying debris by geophysical flows can significantly increase the flow deposit extent. To study this phenomenon, analog laboratory experiments have been conducted on granular column collapse over an inclined channel with and without an erodible bed made of similar granular material. Results show that for slope angles below a critical value θc, between 10◦ and 16◦, the run out...

Abstract This paper investigates the robustness of a 6‐storey corner‐supported Modular Steel Building (MSB) under notional ground floor corner column removal (i.e. alternate path method). The assessment following structural effects that were frequently ignored for sake simplicity in existing numerical modelling approaches: (1) semi‐rigidity beam‐to‐column connections, and (2) initial out‐of‐str...