1,721,017 research outputs found
Erectile Function Outcome after Bilateral Nerve Sparing Radical Prostatectomy: Which Patients May Be Left Untreated?
No full textIntroduction. Several studies have shown that erectile function (EF) recovery in patients undergoing bilateral nerve sparing radical prostatectomy (BNSRP) improves significantly when phosphodiesterase type 5 inhibitors (PDE5) are administered following surgery. Methods. We included 293 patients treated with BNSRRP at a single center. Postoperative EF recovery was defined as an EF domain score of the International Index of Erectile Function (IIEF) >= 22. No patient received any treatment for postoperative erectile dysfunction (ED). Kaplan-Meier curves assessed time to EF recovery according to patient age, preoperative EF, and Charlson comorbidity index (CCI). Univariable and multivariable Cox regression models tested the association between predictors and EF recovery. Finally, the rate of EF recovery of untreated patients after BNSRP was compared with a subset of patients with similar preoperative characteristics but receiving PDE5. Main Outcome Measure. The main outcome measure of this article was the IIEF-EF domain score. Results. Overall, 105/293 (35.8%) reached an IIEF-EF >= 22 after a mean follow-up of 26.8 months. At multivariable analyses, age, preoperative IIEF-EF, and CCI achieved independent predictor status (all P 70 years (P = 26) had a 56.6% chance of recovering EF after surgery compared with 18% of patients with severe ED before surgery (P = 22 was higher but did not differ significantly from comparable patients receiving PDE5 (P = 0.11). Conclusions. Overall, the rate of EF postoperative recovery in patients left untreated after surgery is modest (35.8%). Although younger patients with a good preoperative EF may experience good EF recovery rates even without any treatment, use of PDE5 after surgery further improved their functional outcomes. Therefore, a therapy for ED should be offered to all patients treated with BNSRP. Gallina A, Ferrari M, Suardi N, Capitanio U, Abdollah F, Tutolo M, Bianchi M, Sacca A, Salonia A, Rigatti P, Montorsi F, and Briganti A. Erectile function outcome after bilateral nerve sparing radical prostatectomy: Which patients may be left untreated? J Sex Med 2012; 9: 903-908
Choosing the Best Candidates for Penile Rehabilitation after Bilateral Nerve-Sparing Radical Prostatectomy
No full textIntroduction. Controversy exists regarding the ideal candidates for penile rehabilitation after bilateral nerve-sparing radical prostatectomy (BNSRP). Aim. To test the effect of penile rehabilitation according to preoperative patient characteristics. Methods. We included 435 consecutive patients treated with BNSRP between 2004 and 2008. Preoperative age, International Index of Erectile Function (IIEF) and Charlson Comorbidity Index (CCI) were used to subdivide patients into three groups according to foreseen risk of erectile dysfunction (ED) after surgery: low (age = 26, CCI = 70 or IIEF-EF = 22. Results. No difference in terms of EF recovery was found between patients receiving on-demand vs. daily PDE5-I (P = 0.09) in the overall population. Similarly, comparable efficacy of the two treatment schedules (on-demand vs. chronic) was demonstrated in patients with low and high risk of ED (all P < 0.8). Conversely, daily therapy with PDE5-I showed significantly higher efficacy for the EF recovery rate compared with the on-demand PDE5-I administration schedule in patients with intermediate risk of ED (3-year EF recovery: 74% vs. 52%, respectively; P = 0.02). Conclusion. The ideal candidates for penile rehabilitation after surgery are patients at intermediate risk of ED. Briganti A, Di Trapani E, Abdollah F, Gallina A, Suardi N, Capitanio U, Tutolo M, Passoni N, Salonia A, DiGirolamo V, Colombo R, Guazzoni G, Rigatti P, and Montorsi F. Choosing the best candidates for penile rehabilitation after bilateral nerve-sparing radical prostatectomy. J Sex Med 2012;9:608-617
What Is the Definition of a Satisfactory Erectile Function After Bilateral Nerve Sparing Radical Prostatectomy?
No full textIntroduction. Different cut-offs of the erectile function (EF) domain of the International Index of Erectile Function (IIEF) have been used as definition of postoperative EF recovery. Aim. To test the correlation between patient satisfaction and IIEF-EF domain score cut-offs. Main Outcome Measure. The IIEF was used to evaluate EF and satisfaction before and after bilateral nerve sparing radical prostatectomy (BNSRP). Methods. The study included 165 consecutive patients treated with retropubic BNSRP at a single institution. All patients had normal preoperative EF (IIEF-EF >= 26) and reached an IIEF-EF >= 17 following surgery. Complete data included EF, intercourse (IS), and overall satisfaction (OS) assessed by the corresponding domains of the IIEF administered prior and after surgery. Patients were divided into three groups according to the highest IIEF-EF score reached postoperatively, namely 17-21 (group 1), 22-25 (group 2), and >= 26 (group 3). One-way analysis of variance was used to compare IIEF-OS and IIEF-IS domain scores at the time the EF end point was reached. The same analyses were repeated separately in those patients with a complete EF recovery after surgery (group 3). Results. Mean preoperative IIEF-OS and IIEF-IS domain score was 8.4, 8.8, 8.7 and 11.6, 11.8, 11.9 in group 1, 2, 3, respectively (all P >= 0.3). After a mean follow-up of 26.7 months, mean postoperative IIEF-OS and IIEF-IS domain scores assessed at the time of EF recovery were comparable for patients reaching an IIEF-EF of 22-25 and for patients scoring postoperatively >= 26 (8.1, 8.1, and 10.6, 11.4; all P >= 0.3). However, mean IIEF-OS and IIEF-IS domain scores of these patients were significantly higher as compared to patients reaching an IIEF-EF domain score = 22 might represent a reliable score for defining EF recovery after BNSRP. Briganti A, Gallina A, Suardi N, Capitanio U, Tutolo M, Bianchi M, Salonia A, Colombo R, Di Girolamo V, Martinez-Salamanca JI, Guazzoni G, Rigatti P, and Montorsi F. What is the definition of a satisfactory erectile function after bilateral nerve sparing radical prostatectomy? J Sex Med 2011;8:1210-1217
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
How to prevent and manage post-prostatectomy incontinence: A review
No full textPurpose: To provide an overview of the currently available evidence relating to the prevention and management strategies of urinary incontinence (UI) after radical prostatectomy (RP). Materials and Methods: A comprehensive research was carried out on MEDLINE/PubMed database to identify pertinent studies concerning post-RP UI. The search strategy included these words: Urinary continence; urinary continence recovery; urinary incontinence; radical prostatectomy; and prostate cancer. Results: Post-RP UI still represents a challenging issue for both urologic patients and clinicians. A complete preoperative assessment of the risk factors associated with post-RP UI aids both in counseling those patients with a higher estimated likelihood of postoperative UI and in identifying those who would probably benefit from preventive strategies in the preoperative and in the intraoperative settings. Over the last decades different surgical strategies based on either the "preservation"or the "reconstruction"of the anatomical elements responsible for urinary continence (UC) led to an overall improvement of postoperative functional outcomes. Finally, several therapeutic strategies should be evaluated for the postoperative UI management. Artificial urinary sphincter implantation represents the gold standard for treatment, notwithstanding its wide adoption is limited due to high costs and significant risk of surgical revision. In this context, male sling positioning seems the most promising strategy, in particular in mild and moderate post-RP UI. Conclusions: To enhance the likelihood of obtaining an optimal UC recovery after RP, it is here strongly suggested to intervene throughout the overall clinical management process thus including the pre-, intra- and postoperative settings
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