Bibliometric analysis of most cited Peyronie's disease and its management publications.

Introduction: Peyronie's disease (PD) is a common urologic illness, motivating numerous scientific investigations and publications. Scientific publications have more authors each year. A bibliometric review of the PD literature might help urologists and sexual medicine professionals comprehend publication tendencies in this subject. The current study was aimed at presenting a bibliometric analysis of PD, which is one of the important and trending subjects of andrology. Methods: On January 5, 2023, Web of Science scanned documents with the terms Peyronie's disease" "Peyronie's disease treatment", "Peyronie's disease management", "Peyronie's disease surgery" and "Peyronie's disease injection" from 1975 through 2023. Titles, years, authors, citations, citation indices, journal names, authors' countries of origin, article categories, and funding sources were recorded. Results: "Clinical Efficacy, Safety and Tolerability of Collagenase Clostridium Histolyticum for the Treatment of Peyronie Disease in 2 Large Double-Blind, Randomized, Placebo Controlled Phase 3 Studies" has the most citations and citation index. Most of the T100 articles were published in 2020, primarily in the Journal of Urology. These articles mainly focused on treatment, especially surgeries. All of these articles were in English, and the vast majority of them were by authors from the US who were most frequently collaborated with by other authors. Conclusion: This research analyzed the top 100 PD studies. This research focused on pathophysiology, innovative surgical procedures, and new approaches of PD. It also recommended bigger databases and more financing for research.

Evaluation of information accuracy and clarity: ChatGPT responses to the most frequently asked questions about premature ejaculation.

Background: Premature ejaculation (PE) is the most prevalent sexual dysfunction in men, and like many diseases and conditions, patients use Internet sources like ChatGPT, which is a popular artificial intelligence-based language model, for queries about this andrological disorder. Aim: The objective of this research was to evaluate the quality, readability, and understanding of texts produced by ChatGPT in response to frequently requested inquiries on PE. Methods: In this study we used Google Trends to identify the most frequently searched phrases related to PE. Subsequently, the discovered keywords were methodically entered into ChatGPT, and the resulting replies were assessed for quality using the Ensuring Quality Information for Patients (EQIP) program. The produced texts were assessed for readability using the Flesch-Kincaid Grade Level (FKGL), Flesch Reading Ease Score (FRES), and DISCERN metrics. Outcomes: This investigation has identified substantial concerns about the quality of texts produced by ChatGPT, highlighting severe problems with reading and understanding. Results: The mean EQIP score for the texts was determined to be 45.93 ± 4.34, while the FRES was 15.8 ± 8.73. Additionally, the FKGL score was computed to be 15.68 ± 1.67 and the DISCERN score was 38.1 ± 3.78. The comparatively low average EQIP and DISCERN scores suggest that improvements are required to increase the quality and dependability of the presented information. In addition, the FKGL scores indicate a significant degree of linguistic intricacy, requiring a level of knowledge comparable to about 14 to 15 years of formal schooling in order to understand. The texts about treatment, which are the most frequently searched items, are more difficult to understand compared to other texts about other categories. Clinical Implications: The results of this research suggest that compared to texts on other topics the PE texts produced by ChatGPT exhibit a higher degree of complexity, which exceeds the recommended reading threshold for effective health communication. Currently, ChatGPT is cannot be considered a substitute for comprehensive medical consultations. Strengths and Limitations: This study is to our knowledge the first reported research investigating the quality and comprehensibility of information generated by ChatGPT in relation to frequently requested queries about PE. The main limitation is that the investigation included only the first 25 popular keywords in English. Conclusion: ChatGPT is incapable of replacing the need for thorough medical consultations.

Use of the Systemic Immune-Inflammation Index to Predict Treatment Efficacy in Patients with Bladder Pain Syndrome.

OBJECTIVE: To determine the relationship between bladder pain syndrome (BPS) and systemic inflammatory index (SII) and to examine the impact of treatment protocols on it. STUDY DESIGN: Observational Study. Place and Duration of the Study: Department of Urology, Tekirdag Namik Kemal University, Tekirdag, Turkiye, from January 2017 to December 2022. METHODOLOGY: A retrospective analysis was conducted on 30 BPS patients who underwent medical therapy. Upon diagnosis, the patients completed the king's health questionnaire (KHQ), beck depression questionnaire (BDQ), beck anxiety questionnaire (BAQ), and short form (SF-36) quality of life form. Peripheral blood SII was measured. After six months of regular therapy, the SII was recalculated when the patients completed the same forms again. The SII was compared between instances when patients reported more complaints, higher form scores, and instances when they reported fewer and lower scores. RESULTS: The patients had a mean age of 46.1 ± 13.6 years, with four males and 26 females. The mean follow-up duration was 76.3 ± 24.5 months. Five patients of KHQ subcategories showed statistically significant decreases following therapy (52 to 39.17, 66.66 to 54.16, 54.40 to 41.07, 75.55 to 58.14, and 60.55 to 40.47). All patients of SF-36 components increased (p = 779, p = 0.393, p = 0.007, p = 0.004, p = 0.008, p = 0.041, p = 0.010, and p = 0.767, respectively). BDQ and BAQ decreased after therapy (11.55 to 11.41 and 11.86 to 11.24, respectively). Lymphocyte count, neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and SII decreased significantly (p = 0.001, 0.019, 0.002 and 0.039, respectively). CONCLUSION: SII, lymphocyte count, NLR, and PLR decreased after treatment, similar to BDQ and BAQ. SII is a simple and feasible method for evaluating the treatment efficacy of BPS. KEY WORDS: Bladder pain syndrome, Lymphocyte, Neutrophil, Systemic immune inflammation index, Platelet.

Responses of Five Different Artificial Intelligence Chatbots to the Top Searched Queries About Erectile Dysfunction: A Comparative Analysis.

The aim of the study is to evaluate and compare the quality and readability of responses generated by five different artificial intelligence (AI) chatbots-ChatGPT, Bard, Bing, Ernie, and Copilot-to the top searched queries of erectile dysfunction (ED). Google Trends was used to identify ED-related relevant phrases. Each AI chatbot received a specific sequence of 25 frequently searched terms as input. Responses were evaluated using DISCERN, Ensuring Quality Information for Patients (EQIP), and Flesch-Kincaid Grade Level (FKGL) and Reading Ease (FKRE) metrics. The top three most frequently searched phrases were "erectile dysfunction cause", "how to erectile dysfunction," and "erectile dysfunction treatment." Zimbabwe, Zambia, and Ghana exhibited the highest level of interest in ED. None of the AI chatbots achieved the necessary degree of readability. However, Bard exhibited significantly higher FKRE and FKGL ratings (p = 0.001), and Copilot achieved better EQIP and DISCERN ratings than the other chatbots (p = 0.001). Bard exhibited the simplest linguistic framework and posed the least challenge in terms of readability and comprehension, and Copilot's text quality on ED was superior to the other chatbots. As new chatbots are introduced, their understandability and text quality increase, providing better guidance to patients.

The Predictive Factors for the Longer Survival of the Reusable Flexible Ureterorenoscopy.

PURPOSE: The flexible ureterorenoscopy (FURS) is expensive and fragile equipment which easily break down during the surgery. f-URS have yet some problems with their durability that affect survival. One of the most important ways to increase the survival of a device is to improve its use in the right indications. We aimed to investigate whether the durability of the f-URS will be affected due to the volume and location of the stone and some anatomical features of the including infundibulopelvic angle (IPA), and location anomalies. MATERIALS AND METHODS: The collected data from 705 patients' data including their age, sex, stone location, and stone volume, S-ReSC score, Hounsfield unit (HU) as stone density, IPA, BMI, and the usage time of f-URS using 10f-URS were included to study. Exp(B) values and confidence intervals (95% CIs) of parameters were calculated with COX regression and Roc curve analysis was also used to determine the cut-off value. RESULTS: Renal malformation, DJstent use, previous ESL application, and UAS use did not affect contrary to expectations stone volume, HU, IPA, and S-ReSC score were among the factors statistically significant affecting the durability of the device. It was observed, Exp(B) values of the affecting factors to be 0.984, 0.268, 0.894, and 0.607, respectively. We found the most appropriate cutoff value for IPA as 41.25 degrees. CONCLUSION: The mean stone volume broken by each of the subsequent f-URS may increase, while the mean operative time may decrease as time progresses. This result shows us the importance of mastery of the device, such as the deflection maneuver, and the correct use distance of the laser, which improves with the increase in user experience, and makes us interpret that the operation time is shortened with this self-confidence. Factors including stone volume, HU, IPA, S-ReSC score affect the durability of the f-URS device and the as well as manufacturing features.

Does High Ventilation Mode Affect the Success Rates of Retrograde Intrarenal Surgery? A Single-Blind Randomized, Prospective, Single-Center Study.

Purpose: Retrograde intrarenal surgery (RIRS) has been accepted as a first-line therapeutic option for kidney stones <2 cm. Renal mobility might be a challenging situation for the surgeon targeting the laser, thereby limiting the renal mobility during surgery might affect the surgical success. The main objective of the present trial was to evaluate the effect of two different ventilation modes on the efficacy and safety of RIRS performed under general anesthesia. Materials and Methods: The patients undergoing RIRS from January 2023 to April 2023 were prospectively enrolled in the trial. In the standard ventilation (SV) mode, the tidal volume was 8 to 10 mL/kg with respirations per minute being 10-15, whereas in the high ventilation (HV) mode the tidal volume was reduced to 6 to 8 mL/kg with the frequency being increased to 15 to 18 respirations/minute. For the purposes of the trial and the randomization, the anesthesiologist was informed about the ventilation mode used, whereas the surgeon was blinded. The surgical success rates and the observed complications were compared between SV and HV modes. Results: A total of 144 patients were enrolled with the mean age 48.78 ± 14.16 years. The mean duration of operation was 62.9 ± 26.3 minutes in the SV group, whereas it was 58.4 ± 20.1 minutes in the HV group (p = 0.031). Fragmentation rate of the stones per minute was higher in the HV group with the difference being statistically significant (p = 0.003). In the preoperative period, while hematuria was seen at higher rates in the HV group, the difference was not statistically significant (p = 0.671). Stone-free rates (Grades A-B-C) and the rates of postoperative complications were comparable between the groups (p = 0.605 and p = 0.676, respectively). Conclusion: Using HV mode during the RIRS decreased the operative time and provided the surgeon with the ability to target the laser more effectively. Surgeons might prefer using the HV mode during RIRS in a mobile kidney to reduce their operative time and perform comfortable surgery. ClinicalTrials.gov: The trial is registered at ClinicalTrials.gov with the registration number of NCT05792670.

The Effect of Ventilation Mode in Anesthesia on Renal Mobility During Retrograde Intrarenal Surgery. Single-Blind Randomized Study.

PURPOSE: Renal mobility can present challenges for surgeons during stone fragmentation. The respiratory setup of the mechanical ventilator during RIRS might affect renal mobility. The aim of this study was to evaluate the effect of high ventilation (HV) and standard ventilation (SV) modes on renal mobility during RIRS. MATERIALS AND METHODS: Patients who underwent RIRS at a single center between November 2020 and November 2021 were retrospectively included in the study. Renal mobility was measured under fluoroscopic view in HVandSV modes during retrograde pyelography. The surgeon, who was absolutely blind about mechanical ventilation modes, was asked to assess the renal movement grade. After the ventilation mode was changed, the surgeon reassessed renal mobility. The data and the surgeon's assessment were recorded and compared to each other. RESULTS: A total of 86 patients with a mean age of 48.6 ± 15.7 years were included in the study. There was a significant difference between the SV and HV modes in terms of renal mobility in fluoroscopic view (17.1±6.1 mm and 13.6 ± 5.2mm, respectively; p=0.007). According to the surgeon's assessments, the grade of renal mobility was found to be significantly higher in the SV group 2.8 ±1.1 compared to the HV group 2.2 ± 0.8 (p=0.001). Renal movement increased significantly under fluoroscopic vision as the renal grading of the surgeon increased(p=0.013). This data demonstrated that the surgeon's assessment of renal mobility was significantly correlated with fluoroscopic kidney movement. CONCLUSION: Kidney movement was decreased significantly in HV mode during RIRS according to both fluoroscopic findings and surgeon assessment. Most surgeries of mobile kidneys were performed in HV mode, due to the surgeon's preference.

Colic and sleep outcomes of nonpharmacological intervention in infants with infantile colic: systematic review and metaanalysis.

OBJECTIVE: The aim of this study was to systematically review the colic and sleep outcomes of nonpharmacological intervention in infants with infantile colic and perform a meta-analysis of the available evidence. METHODS: The literature review for this systematic review was conducted between December 2022 and January 2023 using five electronic databases, namely PubMed, CINAHL, Scopus, Web of Science, and ULAKBIM. Published articles were scanned using MeSH-based keywords. Only randomized controlled trials conducted in the past 5 years were included. The data were analyzed using the Review Manager computer program. RESULTS: This meta-analysis included three studies involving a total of 386 infantile colic infants. After nonpharmacological treatment, it was found that infants with infantile colic reduced crying time (standardized mean difference: 0.61; 95%CI 0.29-0.92; Z=3.79; p=0.00002), improved sleep duration (standardized mean difference: 0.22; 95%CI -0.04 to 0.48; Z=1.64; p=0.10), and decreased crying intensity (mean difference: -17.24; 95%CI -20.11 to 14.37; Z=11.77; p<0.000001). CONCLUSION: According to the meta-analysis findings, it was determined that the risk of bias was low in the studies included and that nonpharmacological chiropractic, craniosacral, and acupuncture treatments applied to infantile colic infants in the three included studies reduced crying time and intensity and increased sleep duration.

The effect of the pandemic period on Bladder Pain Syndrome patients under amitriptyline treatment.

INTRODUCTION: COVID-19 is a disease that may cause anxiety, depression, and stress. Bladder pain syndrome (BPS) is a disease in which stress and psychological factors might negatively affect its course. In this study, we aimed to examine the possible clinical aggregation of the pandemic period on BPS patients. MATERIALS AND METHODS: A total of 35 BPS patients diagnosed between 2010 and 2018 were included. All patients were using medical treatment, and the follow-up period was at least 6 months. According to our clinical follow-up protocol, the BPS patients were given the King's Health Questionnaire (KHQ), Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI), Overactive Bladder Form V8 (OAB-V8), and Visual Analog Score (VAS) in every visit. In the sixth month of the pandemic, the clinical course of the patients was questioned by telephone or video interview, and their treatment continuities were questioned. Information was received about the delays in their follow-up and the difficulties in accessing healthcare opportunities. The same questionnaires were filled out and compared with pre-pandemic scores. RESULTS: The mean age of the patients included in the study was 50.2 ± 13.32 (min:20, max:74), 11 were males and 24 were females. The mean follow-up periods were 71.8 ± 35.6 months. All questionnaire scores showed an increase compared to the pre-pandemic period. A statistically significant increase was detected during the pandemic in all sub-units of the KHQ. The VAS and OAB-V8 scores of 16 patients who requested hospital admission were significantly higher than before the pandemic. However, there was no statistically significant difference in the increase in VAS and OAB-V8 scores of the 19 patients who refused to come to the hospital. CONCLUSION: BPS patients have been negatively affected by the emotional effects of the COVID-19 pandemic. Due to the fear, stress, anxiety, and depression, the symptoms of BPS patients exacerbated, and the patients could not receive the necessary support due to a lack of regular follow-ups.

Reliability and accuracy of varicocoele videos in YouTube.

OBJECTIVE: To evaluate the scientific impact of videos about varicocoele on YouTube. METHODS: A cross-sectional study was conducted at Turkey in September 2020, and comprised YouTube videos related to varicocoele. The videos were divided into 2 groups according to their reliability and accuracy using the European Association of Urology Sexual and Reproductive Guidelines 2020. A 5-point modified reliability (DISCERN) tool, Global Quality Score, and Journal of the American Medical Association scores of each video were calculated. The user's engagements by total views, video-related comments, and "likes" and "dislikes" to the videos were compared. Data was analysed using SPSS 23. Results: Of the 151 videos assessed, 73(48.34%) were included; 36(49.3%) reliable and 37(50.7%) unreliable. All scores were significantly higher for reliable videos (p<0.05). The mean number of views was 108448±90567 for reliable and 392626±895897 for unreliable videos (p=0.044). The rates of "likes" and "dislikes" were similar between the groups, whereas the comment rate was significantly higher for reliable videos (p<0.05). Most of the videos 40(54.8%) were uploaded by medical advertisements or for-profit companies, while those uploaded by universities or professional organisations were 19(26%). CONCLUSIONS: Nearly half of the varicocoele-related videos on YouTube were unreliable, and the reliability of videos was not directly related to their popularity.

The Predictive Factors for Readmission and Rehospitalization After Retrograde Intrarenal Surgery: The Results of RIRSearch Study Group.

Purpose: Retrograde intrarenal surgery (RIRS) is a safe and effective treatment option for upper urinary tract stones smaller than 2 cm. Although several studies have documented perioperative and postoperative complications related to RIRS, there exists limited data regarding the readmission and rehospitalization of patients after RIRS. The aims of the study were to document the rates of readmission and rehospitalization after RIRS and to determine the predictive factors for readmission and rehospitalization. Materials and Methods: In this study, we retrospectively analyzed patients who underwent RIRS for the treatment of renal stone disease and were unexpectedly readmitted to the hospital within 30 days after discharge. The hospital admission systems were used to determine readmissions and rehospitalizations. Readmission and rehospitalization rates, causes, and treatment procedures were evaluated. Univariate and multivariate analyses of clinicodemographic properties were performed to evaluate possible predictive factors for readmission and rehospitalization after RIRS. Results: A total of 1036 patients were included in the study. Of these patients, 103 (9.9%) were readmitted to the hospital. Among these readmissions, 35 patients (33.9%) were rehospitalized and 14 (13.6%) underwent surgical intervention. The most common reasons for readmission were renal colic and fever. The presence of preoperative pyuria (odds ratio [OR] 1.86), stone volume (OR 1.54), postoperative complications (OR 3.66), and stone-free status (OR 0.46) were predictive factors for readmission, whereas hospitalization time (OR 1.32), postoperative complications (OR 9.70), and stone-free status (OR 0.06) were predictive factors for rehospitalization after RIRS. Conclusion: Nearly 10% of patients who underwent RIRS were readmitted to the hospital within the first month after discharge, and some were rehospitalized. Preoperative pyuria, high stone volume, presence of postoperative complications, and low stone-free status predicted this readmission and rehospitalization. Clinicians must recognize these predictive factors and inform their patients about this possibility.

The delay in the diagnosis and treatment of newly diagnosed bladder cancer patients during COVID 19 pandemic.

Background: To evaluate the newly diagnosed bladder cancer(BC) patients during the pandemic period and compare them with the corresponding last4 years. Objectives: To document the time schedules of BC patient evaluation and define the possible delays and investigate the reasons. Methods: Newly diagnosed BC patients who underwent transurethral resection of bladder tumour in the last5 years were retrospectively included to study. The patients were divided into 5 groups. Group-1 was composed of patients diagnosed betweenMarch, 1,2016 -March-1,2017. The patients who were diagnosed in the further corresponding years formed group 2,3 and 4. The last group(Group-5) was composed of patients who were diagnosed during the pandemic period which was between March,1,2020 and March,1,2021. The clinicodemographic properties and diagnostic time schedules of the patients were compared between the groups. Results: There were56 patients in Group-1,60 patients in Group-2,61 patients in Group-3,68 patients in Group-4, and 58 patients inGroup-5. The mean hospital admission period was102.5±179.0days during the pandemic period which ranged between24.5± 32.0 and38.3±69.1days before thepandemic.(p=0.002)The diagnosis-anesthesia period was significantly higher during the pandemic pandemic period.(p=0.034). Conclusions: The pandemic period has caused some delays in the diagnosis and treatment of BC patients. Telemonitoring systems may be useful to prevent the possible diagnostic and treatment delays for newly diagnosed BC patients.

Erectile dysfunction iceberg in an urology outpatient clinic: How can we encourage our patients to be more forthcoming?

The study's aim was to document the rates of declared and hidden erectile dysfunction (ED) at urology outpatient clinic while attempting to develop a method to encourage patients to talk about ED. A total of 506 patients, all of whom underwent the same procedure by the same clinician with a standard algorithm, were prospectively evaluated. The patients who declared ED as their primary or secondary symptom were grouped as 'very early treatment seekers' (VETS) and 'early treatment seekers' (ETS) respectively. The patients who hid their ED until directly questioned and the patients whose ED was diagnosed with an IIEF-5 questionnaire were grouped as 'late treatment seekers' (LTS) and 'very late treatment seekers' (VLTS) respectively. The total number of ED was 291 (57.5%), comprised of 54 (18.6%) patients in the VETS, 48 (16.5%) in the ETS, 143 (49.1%) in the LTS and 46 (15.8%) in the VLTS groups. The rate of severe ED was significantly higher in the VETS group, whereas the rate of mild ED was significantly higher in the VLTS group (p < .001). Most of the patients would not seek help for their ED until the clinician directly or indirectly questioned them. Simple manipulations uncovered the hidden ED patients.

Prospective Evaluation of Ipsilateral and Contralateral Renal Blood Flow During Retrograde Intrarenal Surgery.

OBJECTIVES: To evaluate the changes of peak systolic velocity(PSV), end-diastolic velocity(EDV), and resistive index(RI) of renal and arcuate arteries at the ipsilateral and contralateral kidneys during the retrograde intrarenal surgery. METHODS: The patients who had RIRS for the treatment of renal stones were prospectively included in the study. An experienced radiologist performed doppler ultrasonography of the ipsilateral and contralateral kidney before the surgery just after the anesthesia and at the end of the surgery before stenting. The PSV, EDV, and RI of renal and arcuate arteries at the ipsilateral and contralateral kidneys were measured. RESULTS: A total of 53 patients were included in the study. The postoperative mean PSV, EDV, and RI of renal arteries at the ipsilateral and contralateral arteries were similar to preoperative values. The mean PSV and RI of the arcuate arteries at the ipsilateral kidney significantly increased postoperatively (P = 0.032, P = 0.012) The postoperative mean PSV, EDV, and RI of arcuate arteries did not change significantly during the surgery. The age, gender, and flexible ureteroscopy time did not affect the change of renal and arcuate arterial PSV, EDV, and RI at the ipsilateral and contralateral kidneys. CONCLUSION: The elevation of intrarenal pressure during RIRS did not change the blood flow at the major arteries of the ipsilateral and contralateral kidneys. On the other hand, there was a significant increase at the RI of the arcuate arteries in the ipsilateral kidney which was proposed to be related to the vasoconstriction of minor vasculature of the kidney.

The Evaluation of the Relation between Bladder Cancer and Oxidative Stress Using NRF-2/KEAP-1 Pathway, Zinc and Copper Levels.

PURPOSE: It has been shown that the Copper and Zinc contribute to the structure of the antioxidant enzymes. In addition NRF-2 and KEAP-1 complex have powerful effect on the intracellular organization of the antioxidants. We evaluated the relation of Copper, Zinc, NRF-2 and KEAP-1 complex regarding to the oxidative stress with tumor stage - grade in patients with bladder cancer. MATERIALS AND METHODS: A total of 52 patients (32 bladder cancer and 20 control group) were included to the study. The demographic properties of groups were identical. Serum NRF-2, KEAP-1, Cu and Zn levels were compared by ELISA method between the groups and tissue NRF-2, KEAP-1, Cu and Zn levels were evaluated also by ELISA method at cancer patients.

Can non-urological doctors play a role in early prostate cancer detection?

PURPOSE: To evaluate the awareness of non-urological doctors for their role in evaluating prostate cancer (Pca) in scientific manner which may be a possible probability for late diagnosis of Pca. MATERIALS AND METHODS: A total of 936 non-urological specialists working in 1 university and 4 education and research hospital who were able to evaluate male patients over 50 years of age were included to the survey. A face to face questionnaire had been administered to all participants. RESULTS: A total of 92 (9.8%) participants were evaluating prostate-specific antigen (PSA) level to all their elderly male patients while 404 (43.2%) participants had never made this evaluation. Among the participants who were evaluating PSA, none was performing an informed decision making consult and even they did not have any idea about the meaning of this strategy. About the criteria for urological consultation, 56 (6%) reported that they consult all their elderly male patients, whereas 880 (94%) answered that they perform consultation if their patients has sought help for any urological symptom. CONCLUSION: Urologists must remind the non-urological specialists that their approaches to Pca evaluation may change mortality rates of this disease and give them proper information about the scientific evaluation of Pca. This may help us to decrease the mortality rates of Pca.

Effect of voiding position on uroflowmetric parameters in healthy and obstructed male patients.

PURPOSE: Uroflowmetry is frequently used and simple urodynamic test, but it may be affected by various factors. Voiding position is one of the factors that can change the results. We tried to compare the uroflowmetric parameters in sitting and standing positions during urination. MATERIAL AND METHODS: A total of 198 patients were enrolled to the study. All patients underwent an uroflowmetry in standing and sitting position at late afternoon (2-4 PM) of two corresponding days with a gravimetric uroflowmeter (Uroscan, Aymed, Turkey). A transabdominal ultrasonography was used to evaluate post voiding residue (PVR). All uroflowmetric parameters and PVR were compared with paired t test or Wilcoxon signed rank test. RESULTS: The median age of study population was 58.0 (36-69) years. There was no statistically significant difference at voided volume of patients in standing and sitting position as it was 271.5 ± 81.8 mL and 274.8 ± 82.4 mL, respectively (P = .505). Mean maximum flow rate (Qmax) during urination at standing position was 15.3 ± 6.7 mL/s while it was 15.0 ± 7.0 mL/s at sitting position (P = .29). Mean average flow rate in standing position was 8.60 ± 4.0 mL/s and 8.25 ± 3.8 mL/s in sitting position (P = .054). There was a statistically significant difference between the median post-voiding residues in standing and sitting urination which was 29.5 (0-257) mL in standing and 47.5 (2-209) mL in sitting position (P < .0001). Other uroflowmetric parameters (time to maximum flow and voiding time) was not statistically different between groups. CONCLUSION: There are no clinically important uroflowmetric differences between voiding in sitting and standing positions so voiding position may be left to personal preferences during uroflowmetric evaluation.

Is nocturia of young adulthood a remnant of childhood nocturnal enuresis?

INTRODUCTION AND HYPOTHESIS: Nocturia and nocturnal enuresis (NE) share similar aetiopathological factors, and may represent two different situations involving the same underlying issue. In this study, we tried to evaluate the relation between NE of childhood and nocturia of young adulthood. METHODS: A total of 577 female university students aged 17-24 years were included in the survey. A face-to-face questionnaire was administered concerning present nocturia and past NE history. A non-validated questionnaire, created by the authors, was used to evaluate the presence and the frequency of childhood NE and present nocturia. All participant data were checked by telephone contact with their parents. RESULTS: The overall prevalence rates of nocturia and history of nocturnal enuresis in the study population were 8.6 % and 15 % respectively. Sixteen per cent of nocturics and 15 % of non-nocturics had a history of childhood NE (p = 0.837). The childhood NE was graded as severe or infrequent. The presence of nocturia was compared between participants with severe NE and infrequent NE, and no significant difference was observed (11.1 % vs 7.8 %, p = 0.713). Nocturia frequency was compared with the history of childhood NE and we found that as the nocturia frequency increased, the rate of childhood NE also increased. CONCLUSIONS: There was no relation between young adulthood nocturia and childhood NE in our study population, but as the severity of nocturia increased, the relation between nocturia and NE became more relevant.

Supine or prone percutaneous nephrolithotomy: do anatomical changes make it worse?

PURPOSE: To evaluate the different anatomical properties and determine the risk of visceral organ injury in supine, prone, and prone-flex positions. MATERIALS AND METHODS: A total of 30 patients with renal stones >2 cm were included. A dose reduced abdominopelvic tomography in a supine, prone, and 30° prone-flex position was performed. The access tract length, subcutaneous tissue length, nearest organ distance, maximum access angle, access field, and the degree of renal displacement were measured in axial and coronal images. The parameters were analyzed by the paired t-test and Wilcoxon signed test according to normalcy analysis. RESULTS: The mean tract lengths and the subcutaneous fat tissue lengths in the lower, middle, and upper poles of kidney were significantly longer in the supine position. The significance of access tract lengths had disappeared when we subtracted the subcutaneous fat tissue length from the whole tract length, exhibiting that the main determinant of tract length was subcutaneous tissue thickness. The maximum access angles were 96.7±22.0°, 94.2±23.6°, and 89.1±23.9° in the supine, prone, and prone-flex position, respectively (p>0.05). The access field was shorter in the supine (80.8±13.3 mm) than prone (86.3±15.0 mm) and prone-flex (86.7±18.4 mm) position (p<0.001). The nearest organ distance to access tract was similar between the supine and prone position in every pole of kidney. CONCLUSIONS: The anatomical changes related to supine positioning does not increase the risk of percutaneous nephrolithotomy (PCNL) complications. Although supine PCNL may have some benefits over prone PCNL, there will also be some technical difficulties related to the surgeon's manipulations, which are related with the longer access tract and more limited access field.