Stephen R. Payne

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OBJECTIVES Men presenting with primary infertility and azoospermia may be offered surgical sperm retrieval (SSR) as a prelude to intracytoplasmic sperm injection (ICSI). We evaluated sperm retrieval rates in subgroups of men with azoospermia, based on obstructive aetiology, testicular volume and FSH. METHODS 106 patients with primary infertility underwent(More)
Two hundred and fifty cases of percutaneous nephrolithotomy (PNL) are described. One hundred and fifty cases were treated in two stages, 100 in a single stage. The one-stage method has been shown to be as safe as the two-stage method but should be reserved for those with experience of the technique and who possess adequate instrumentation. PNL has proved to(More)
This study was designed to compare different methods of treating renal calculi in order to establish which was the most cost effective and successful. Of 1052 patients with renal calculi, 350 underwent open surgery, 350 percutaneous nephrolithotomy, 328 extracorporeal shockwave lithotripsy (ESWL), and 24 both percutaneous nephrolithotomy and ESWL. Treatment(More)
OBJECTIVE To evaluate and compare sperm quality and suitability for intracytoplasmic sperm injection (ICSI) from open and percutaneous epididymal aspiration in men with obstructive azoospermia, and to determine the relevance of epididymal morphology. PATIENTS AND METHODS A series of 20 men undergoing vasectomy reversal were evaluated by percutaneous(More)
Although percutaneous nephrolithotomy (PCNL) and extracorporeal shockwave lithotripsy (ESWL) were introduced clinically at approximately the same time (1980-1981), their clinical progress appeared to progress along separate paths and to compete with each other. After 5 years it has become apparent that for optimal removal of nearly all renal stones by(More)
Upper tract pressure flow studies in four clinically unobstructed ureters with double J stents in situ indicated that urinary flow occurred mainly around the stent and that there was significant vesicorenal pressure transmission. This study examined the dynamics of ureteric urinary flow and morphological effects consequent upon stenting a ureter in vivo. In(More)
The contribution of organic and psychogenic factors in the aetiopathogenesis of impotence was studied in a large number of diabetic males, to develop an algorithm for its management. We examined 110 consecutive patients who were referred to the Impotence Clinic of the Diabetes Centre. All patients were initially evaluated by a diabetologist and then(More)
Urine samples were cultured for aerobic, fastidious, and anaerobic bacteria in 88 patients (66 F, 22 M) before and after standard urodynamic investigations. 37 of 42 women with detrusor instability, and 14 of 17 women with stress incontinence, had evidence of bacteriuria with aerobic or fastidious bacteria before investigation, as did 6 of 13 men with(More)