Petros Perimenis

..In these cost-conscious times, health economics is also an important issue, and comparative cost-effectiveness assessment of available treatment options is becoming imperative...

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..More clinical trials are needed to clarify this issue...

..Enhancing pulmonary circulation with sildenafil safely protects against the high altitude-induced PH and improves gas exchange...

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..To assess the improvement of concurrent erectile dysfunction (ED) in men with overlap syndrome (obstructive sleep apnea and chronic obstructive pulmonary disease), treated with continuous positive airway pressure (CPAP) and bronchodilators...

..Treatment success depends on several outcomes. Tadalafil is a long-acting, selective inhibitor of phosphodiesterase 5 that has been shown to be effective at treating men with ED...

..To assess efficacy and safety of the combination of sildenafil and continuous positive airway pressure (CPAP), and satisfaction with treatment for erectile dysfunction (ED) in men with obstructive sleep apnea (OSA)...

..Phosphodiesterase 5 (PDE5) is expressed in the prostate and bladder and PDE5 inhibitors have been shown to relax precontracted muscle strips from these organs...

..To assess the behavior of patients with diabetes mellitus (DM) and erectile dysfunction (ED) during 10 consecutive years of treatment with self-injection of vasoactive drugs...

..Ureteral patency in malignant ureteral obstruction cases is a therapeutic challenge. We report our long-term experience with palliative treatment for extrinsic malignant ureteral obstruction with percutaneous placement of metal mesh stents...

..We report our long-term experience with the management of benign ureteroileal anastomotic strictures using self-expandable metal stents...

..Based on these reports, we used paclitaxel-eluting MS within an animal renal artery lumen and compared the results with those using a bare-metal stent...

..Anticholinergic medications to treat storage LUTS are often withheld in such patients for fear of significantly increasing post-void residual urine volumes or provoking acute urinary retention (AUR)...

..We conducted an in vitro study to elucidate the relaxing effect of various doses of vardenafil on the porcine ureter. Moreover, we propose a porcine ureter model for the evaluation of the effect of different substances on the ureter...

..To examine the safety and compatibility of full-length metal ureteral stent usage with extracorporeal shock wave lithotripsy (SWL)...

..To review multi-institutional, multidisciplinary experience in the management of Fournier's gangrene (FG) in an attempt to identify etiologic parameters as well as to propose methods of efficient management...

..To investigate the impact of daily sildenafil on levels of soluble molecular markers of endothelial function in men with erectile dysfunction...

..The use of CAIA enhanced the efficacy of DSA and enabled the in vivo identification of the effect of irradiation on various caliber vessels as well as the ratios of total length and total area of small and big vessels...

..To determine the need for pre-treatment stenting in patients undergoing extracorporeal shockwave lithotripsy (ESWL) for ureteral stones sized 4-10 mm...

..The purpose of the present study is to compare the standard bare metal stents (BMS) with the Paclitaxel-Drug Eluting Stent (DES) in the ureter of a pig model...

..Mapping of the material viscoelastic property variation along the length axis of polymeric stents...

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..To present experience with the percutaneous management of iatrogenic ureteral injuries...

..To determine and compare the prognostic value of PSA density, PSA velocity and free/total PSA ratio in predicting adverse pathological findings after radical prostatectomy...

..To evaluate the use of virtual endoscopy (VE) for the investigation of the pelvicaliceal unit and the depiction of its anatomic deformities...

..Overactive bladder is a prevalent and bothersome condition. Existing pharmacotherapy with antimuscarinics improves symptoms and quality of life but there are certain limitations in efficacy and tolerability...

..Cystoscopy was the only helpful diagnostic tool and should be considered early in the evaluation of this kind of patients. The mechanism of migration of the cuff and the operative technique are discussed...

..Ultrasonography has been increasingly used in the assessment of lower urinary tract conditions...

..Postoperatively, the patient presented no signs of fever or remarkable blood loss and was discharged on the third day in good clinical condition. He is free of disease 1 year later...

..Percutaneous nephrolithotomy (PNL) is a first-line management technique for staghorn stones and stones located in a horseshoe kidney (HK). We present our multi-institutional experience on the management of staghorn calculi within HKs...

..New studies on the effects of current pharmacotherapy and of new agents on overall survival and quality of life, after defining well-established criteria for patient stratification and inclusion, are required urgently...

..To determine the clinical, laboratory, and imaging variables that can predict spontaneous stone passage in patients with renal colic secondary to ureteral calculi...

..To determine the value of PSA density as independent predictor for lymph node invasion in order to decide lymphadenectomy in patients undergoing radical prostatectomy...

..More studies are needed to assess the efficacy of anti-inflammatory agents in bladder cancer treatment and further clarify their therapeutic benefit in patients with prostate cancer, in which initial results are encouraging...

..This study was designed to evaluate whether urologists' attitude towards management of benign prostate hyperplasia can be changed, and to estimate objectively the achievement of educational goals by using an interactive voting system...

..To investigate the association of retrocaval ureter with other congenital abnormalities...

..Reasons for that seem to often be unrelated to efficacy or tolerability and include emotional and social factors determining couples' and individuals' sexual and treatment seeking behavior...

..A significant percentage of patients with UI, mainly those with UUI and MUI, can be treated successfully with pharmacotherapy...

..However, larger prostatic calculi may be related to underlying inflammation and require further evaluation and possibly, treatment...

..Even though the results regarding the prognostic surrogates are not significant, the effects on clinical and pathological outcomes are promising, while toxicity in most of the studies is in the expected field...

..The benefit in overall survival is less clear and needs further evaluation. Toxicity represents a concern especially in combination regiments...

..It includes successful voiding rehabilitation (micturition technique, complete bladder emptying, increase of functional reservoir capacity, and sphincter training) and a meticulous lifelong followup...

..Phosphodiesterase 5 inhibitors have been investigated and proved useful in clinical practice for erectile dysfunction but in addition to this, the results seem promising of a beneficial effect on endothelial dysfunction, as well...

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..The purpose of the present study was to evaluate the use of externally coated stents in patients with malignant ureteral obstruction...

..Interestingly, our results indicate that the speed of action of FIN may not be as rapid as previously described...

..Attempted nerve sparing has the greatest impact on daytime continence and age has the greatest impact on nighttime continence. Attempted nerve sparing and younger age are both associated with more frequent recovery of erectile function...