Is the learning curve of the urology resident for conventional radical prostatectomy similar to that of staff initiating robot-assisted radical prostatectomy?

ABSTRACT Introduction: The superiority of the functional results of robot-assisted radical prostatectomyis still controversial. Despite this, it is known that minimally invasive surgery obtains better results when analyzing blood loss, blood transfusion and length of stay, for example. Several studies have analyzed the impact of the resident physician's involvement on the results of urological surgeries. The simple learning curve for robot-assisted radical prostate surgery is estimated to be around 10 to 12 cases. Learning curve data for robotic surgeons is heterogeneous, making it difficult to analyze. Rare studies compare the results of a radical prostatectomy of an inexperienced surgeon starting his training in open surgery, with the results of the same surgeon, a few years later, starting training in robotic surgery. Objective: to analyze the results of open radical prostatectomy surgeries (ORP) performed by urology residents, comparing them to the results of robot-assisted radical prostatectomy (RARP), performed by these same surgeons, after completing their training in urology. Materials and methods: a retrospective analysis of the cases of only 3 surgeons was performed. 50 patients underwent ORP (group A). The surgeons who operated on the ORP patients were in the 3rd and final year of the urology residency program and beginners in ORP surgery, but with at least 4 years of experience in open surgery. The same surgeons, already trained urologists, began their training in robotic surgery and performed 56 RARP surgeries (group B). For the comparative analysis, data were collected on age, number of lymph nodes removed, surgery time, hospitalization time, drain volume, drain permanence time, indwelling bladdercateter (IBC) permanence time, positive surgical margin, biochemical recurrence, risk classification (ISUP), intra and postoperative complications, urinary incontinence (UI) and erectile dysfunction (ED). The console used was the Da Vinci Si, from Intuitive®. For statistical analysis, the Shapiro-Wilk test verified that the data did not follow normality, the Levene test guaranteed homogeneity, and the Mann-Whitney test performed the comparative analysis of the quantitative data. For the analysis of qualitative data, the Chi-square test was used for nominal variables and the Mann-Whitney U test for ordinal variables. Additionally, the Friedman test analyzed whether there was an improvement in the perception of UI or ED over the months, for each group individually (without comparing them), and the post-hoc Durbin-Conover test, for the results with statistically significant difference. We used a p-value < 0.05, and the Jamovi® program (Version 2.0). Results: there was no statistically significant difference between the groups for age, number of lymph nodes removed, positive surgical margin, biochemical recurrence, risk classification and urinary incontinence. Additionally, we observed that the surgical time was longer in group B. On the other hand, the length of stay, drain volume, drain time, IBC time, complication rate and levels of erectile dysfunction in the third and sixth months were higher in group A, when compared to group B. We also observed that there was no evolutionary improvement in ED over the months in both groups, and that there was a perception of improvement in UI from the 1st to the 3rd month in group A, and from the 1st to the 6th month, and from the 3rd to the 12th month, in group B. Conclusion: the learning curve of RARP is equivalent to the curve of ORP. In general, the results for the robotic group were better, however, the functional results were similar between the groups, with a slight tendency of advantage for the robotic arm.

Identify risk factors for perioperative outcomes in Intracorporeal Urinary Diversion and Extracorporeal Urinary Diversion with Robotic Cystectomy

ABSTRACT Introduction: The increasing adoption of robotic-assisted cystectomy with intracorporeal urinary diversion (ICUD), despite its complexity, prompts a detailed comparison with extracorporeal urinary diversion (ECUD). Our study at a single institution investigates perioperative outcomes and identifies risk factors impacting the success of these surgical approaches. Methods: In this retrospective analysis, 174 patients who underwent robotic-assisted cystectomy at the University of Louisville from June 2016 to August 2021 were reviewed. The cohort was divided into two groups based on the urinary diversion method: 30 patients underwent ECUD and 144 underwent ICUD. Data on demographics, complication rates, length of hospital stay, and readmission rates were meticulously collected and analyzed. Results: Operative times were comparable between the ICUD and ECUD groups. However, the ICUD group had a significantly lower intraoperative transfusion rate (0.5 vs. 1.0, p=0.02) and shorter hospital stay (7.8 vs. 12.3 days, p<0.001). Factors such as male sex, smoking history, diabetes mellitus, intravesical therapy, higher ASA, and ACCI scores were associated with increased Clavien-Dindo Grade 3 or higher complications. Age over 70 was the sole factor linked to a higher 90-day readmission rate, with no specific characteristics influencing the 30-day rate. Conclusion: Robotic cystectomy with ICUD results in shorter hospitalizations and lower intraoperative transfusion rates compared to ECUD, without differences in operative time, high-grade postoperative complications, or readmission rates. These findings can inform clinical decision-making, highlighting ICUD as a potentially more favorable option in appropriate settings.

Postoperative antibiotic prophylaxis for percutaneous nephrolithotomy and risk of infection: a systematic review and meta-analysis

ABSTRACT Purpose: The aim of this study is to perform a high-quality meta-analysis using only randomized controlled trials (RCT) to better define the role of postoperative antibiotics in patients undergoing percutaneous nephrolithotomy (PCNL). Materials and Methods: A literature search for RCTs in EMBASE, PubMed, and Web of Science up to May 2023 was conducted following the PICO framework: Population—adult patients who underwent PCNL; Intervention—postoperative antibiotic prophylaxis until nephrostomy tube withdrawal; Control—single dose of antibiotic during the induction of anesthesia; and Outcome—systemic inflammatory response syndrome (SIRS) or sepsis and fever after PCNL. The protocol was registered on the PROSPERO database (CRD42022361579). We calculated odds ratios (OR) and 95% confidence intervals (CI). A random-effects model was employed, and the alpha risk was defined as < 0.05. Results: Seven articles, encompassing a total of 629 patients, were included in the analysis. The outcome of SIRS or sepsis was extracted from six of the included studies, while the outcome of postoperative fever was extracted from four studies. The analysis revealed no statistical association between the use of postoperative antibiotic prophylaxis until nephrostomy tube withdrawal and the occurrence of SIRS/sepsis (OR 1.236, 95% CI 0.731 - 2.089, p=0.429) or fever (OR 2.049, 95% CI 0.790 - 5.316, p=0.140). Conclusion: Our findings suggest that there is no benefit associated with the use of postoperative antibiotic prophylaxis until nephrostomy tube withdrawal in patients undergoing percutaneous nephrolithotomy (PCNL). We recommend that antibiotic prophylaxis should be administered only until the induction of anesthesia in PCNL.

Impacts on functional and oncological outcomes of Robotic-assisted Radical Prostatectomy 10 years after the US Preventive Service Taskforce recommendations against PSA screening

ABSTRACT Objective: In the following years after the United States Preventive Service Task Force (USPSTF) recommendation against prostate cancer screening with PSA in 2012, several authors worldwide described an increase in higher grades and aggressive prostate tumors. In this scenario, we aim to evaluate the potential impacts of USPSTF recommendations on the functional and oncological outcomes in patients undergoing robotic-assisted radical prostatectomy (RARP) in a referral center. Material and Methods: We included 11396 patients who underwent RARP between 2008 and 2021. Each patient had at least a 12-month follow-up. The cohort was divided into two groups based on an inflection point in the outcomes at the end of 2012 and the beginning of 2013. The inflection point period was detected by Bayesian regression with multiple change points and regression with unknown breakpoints. We reported continuous variables as median and interquartile range (IQR) and categorical variables as absolute and relative percent frequencies. Results: Group 1 had 4760 patients, and Group 2 had 6636 patients, with a median follow-up of 109 and 38 months, respectively. In the final pathology, Group 2 had 9.5% increase in tumor volume, 24% increase on Gleason ≥ 4+3 (ISUP 3), and 18% increase on ≥ pT3. This translated to a 6% increase in positive surgical margins and 24% reduction in full nerve sparing in response to the worsening pathology. There was a significant decline in post-operative outcomes in Group 2, including a 12-month continence reduction of 9%, reduction in potency by 27%, and reduction of trifecta by 22%. Conclusions: The increasing number of high-risk patients has led to worse functional and oncologic outcomes. The initial rapid rise in PSM was leveled by the move towards more partial nerve sparing. Among some historical changes in prostate cancer diagnosis and management in the period of our study, the USPSTF recommendation coincided with worse outcomes of prostate cancer treatment in a population who could benefit from PSA screening at the appropriate time.

Surgical safety and effectiveness of bilateral axillo-breast approach robotic thyroidectomy: a systematic review and meta-analysis

Abstract Objectives To assess the safety and effectiveness of bilateral axillo-breast approach robotic thyroidectomy in thyroid tumor. Methods Bilateral axillo-breast approach robotic thyroidectomy and other approaches (open thyroidectomy, transoral robotic thyroidectomy, and bilateral axillo-breast approach endoscopic thyroidectomy) were compared in studies from 6 databases. Results Twenty-two studies (8830 individuals) were included. Bilateral axillo-breast approach robotic thyroidectomy had longer operation time, greater cosmetic satisfaction, and reduced transient hypoparathyroidism than conventional open thyroidectomy. Compared to bilateral axillo-breast approach endoscopic thyroidectomy, bilateral axillo-breast approach robotic thyroidectomy had greater amount of drainage, lower chances of transient vocal cord palsy and permanent hypothyroidism, and better surgical completeness (postopertive thyroblobulin level and lymph node removal). Bilateral axillo-breast approach robotic thyroidectomy induced greater postoperative drainage and greater patient dissatisfaction than transoral robotic thyroidectomy. Conclusion Bilateral axillo-breast approach robotic thyroidectomy is inferior to transoral robotic thyroidectomy in drainage and cosmetic satisfaction but superior to bilateral axillo-breast approach endoscopic thyroidectomy in surgical performance. Its operation time is longer, but its cosmetic satisfaction is higher than open thyroidectomy.

Robotic and Plastic Surgery: actuality and prospects for the near future, a scoping review

ABSTRACT Objective This work aims to review the existing use of robotics in plastic surgery. Methods A meticulous selection process identified 22 articles relevant to this scoping review. Results The literature on the use of robotics in plastic surgery is sparse. Nonetheless, this review highlights emerging benefits in microsurgery, breast reconstruction, and transoral surgery. Conclusion This scoping review identifies critical articles reporting the emerging use of robotics in plastic surgery. While the scientific medical community has yet to extensively document its use, the available evidence suggests a promising future for robotics in this field.

Single Port Robotic Pyeloplasty: early single-center experience

ABSTRACT Purpose: Ureteropelvic junction obstruction (UPJO) is a prevalent cause of hydronephrosis, especially in young patients. The treatment paradigm for this condition has shifted from open to minimally invasive pyeloplasty. In the present study we describe our initial single centre experience with single port (SP) robot-assisted pyeloplasty (RAP) via periumbilical incision. Material and methods: With the patient in a 60-degree left flank position, the SP system is docked with the Access port (Intuitive Surgical, Sunnyvale, CA, US) placed in a periumbilical 3 cm incision. Robotic instruments are deployed as follows: camera at 12 o'clock, bipolar grasper at 9 o'clock, scissors at 3 o'clock and Cadiere at 6 o'clock. After isolation and identification of the ureter and the ureteropelvic junction (UPJ), the ureter is transected at this level and then spatulated. Anastomosis is carried out by two hemicontinuous running sutures, over a JJ stent. Results: Between 2021 and 2023, a total of 8 SP RAP have been performed at our institution, with a median (interquartile range, IQR) of 23 years (20.5-36.5). Intraoperative outcomes showed a median (IQR) OT of 210.5 minutes (190-240.5) and a median (IQR) estimated blood loss (EBL) of 50 mL (22.5-50). No postoperative complications were encountered, with a median (IQR) length of stay (LOS) of 31 hours (28.5-34). Conclusion: In the present study we evaluated the feasibility and safety of SP RAP. The observed outcomes and potential benefits, combined with the adaptability of the SP platform, hold promising implications for the application of SP system in pyeloplasty treatment.

Urological knowledge and tools applied to diagnosis and surgery in deep infiltrating endometriosis - a narrative review

ABSTRACT Objectives: This review discusses deep infiltrating endometriosis (DIE) diagnosis and surgery using current urological knowledge and technologies. Materials and Methods: Narrative review of deep infiltrating endometriosis that result in urological issues. We examined manuscripts from Pubmed, Embase, and Scielo's database using the following MeSH terms: ('endometriosis') AND ('urology' OR 'urological' OR 'urologist') AND ('bladder' OR'vesical') AND ('ureteral' OR 'ureter'). Selection followed PRISMA guidelines. Sample images from our records were brought to endorse the findings. Results: Thirty four related articles were chosen from 105. DIE may affect the urinary system in 52.6% of patients. Lower urinary tract symptoms may require urodynamic examination. Ultrasonography offers strong statistical yields for detecting urinary tract lesions or distortions, but magnetic resonance will confirm the diagnosis. Cystoscopy can detect active lesions, although any macroscopic visual appeal is pathognomonic. Endourology is utilized intraoperatively for bladder and ureteral assessment, however transurethral endoscopic excision of bladder lesions had higher recurrence rates. Laparoscopy is the route of choice for treatment; partial cystectomy, and bladder shaving were the most prevalent surgical treatments for bladder endometriosis. Regarding the ureteral treatment, the simple ureterolysis and complex reconstructive techniques were described in most papers. Using anatomical landmarks or neuronavigation, pelvic surgical systematization allows intraoperative neural structure identification. Conclusions: DIE in the urinary system is common, however the number of publications with high level of evidence is limited. The initial tools for diagnosis are ultrasonography and cystoscopy, but magnetic resonance is the most reliable tool. When the patient has voiding symptoms, the urodynamic examination is crucial. Laparoscopy improves lesion detection and anatomical understanding. This approach must be carried out by professionals with high expertise, since the surgery goes beyond the resection of lesions and includes the preservation of nerve structures and urinary tract reconstruction techniques.

Perioperative mortality for radical cystectomy in the modern Era: experience from a tertiary referral center

ABSTRACT Purpose To evaluate the perioperative mortality and contributing variables among patients who underwent radical cystectomy (RC) for bladder cancer in recent decades, with comparison between modern (after 2010) and premodern (before 2010) eras. Materials and Methods Using our institutional review board-approved database, we reviewed the records of patients who underwent RC for primary urothelial bladder carcinoma with curative intent from January 2003 to December 2019. The primary and secondary outcomes were 90- and 30-day mortality. Univariate and multivariable logistic regression models were applied to assess the impact of perioperative variables on 90-day mortality. Results A total of 2047 patients with a mean±SD age of 69.6±10.6 years were included. The 30- and 90-day mortality rates were 1.3% and 4.9%, respectively, and consistent during the past two decades. Among 100 deaths within 90 days, 18 occurred during index hospitalization. Infectious, pulmonary, and cardiac complications were the leading mortality causes. Multivariable analysis showed that age (Odds Ratio: OR 1.05), Charlson comorbidity index ≥ 2 (OR 1.82), blood transfusion (OR 1.95), and pathological node disease (OR 2.85) were independently associated with 90-day mortality. Nevertheless, the surgical approach and enhanced recovery protocols had no significant effect on 90-day mortality. Conclusion The 90-day mortality for RC is approaching five percent, with infectious, pulmonary, and cardiac complications as the leading mortality causes. Older age, higher comorbidity, blood transfusion, and pathological lymph node involvement are independently associated with 90-day mortality.

Implementation and outcomes of HugoTM RAS System in robotic-assisted radical prostatectomy

ABSTRACT Background The results and benefits of Robotic-assisted Radical Prostatectomy (RARP) are already established in the literature. However, new robotic platforms have been released recently in the market and their outcomes are still unknown. In this scenario, our objective is to describe our experience implementing the HugoTM RAS robot and report the clinical data of patients who underwent Robotic-assisted Radical Prostatectomy. Material and Methods We retrospectively analyzed fifteen consecutive patients who underwent RARP with HugoTM RAS System (Medtronic, Minneapolis, USA) from June to October 2021. The patients underwent transperitoneal RARP on lithotomy position, using six trocars (4 robotic trocars and 2 for the assistant). We reported the clinical feasibility and safety of this platform, assessing perioperative data, including complications and early outcomes. Continuous variables were reported as median and interquartile ranges, categorical variables as frequencies and proportions. Results and Limitations All procedures were safe and feasible with no major complications or conversion. Median operative time was 235 minutes (213-271), and median estimated blood loss was 300ml (100-310). Positive surgical margins were reported in 5 patients (33%). The median hospitalization time was 2 days (2-2), and the median time to remove the foley was 7 days (7-7). On the first appointment four weeks after surgery, all patients had undetectable PSA values, and 61% were continent. Conclusions We described preliminary results with safe and feasible procedures performed with HugoTM RAS System robotic platform. The surgeries were successfully executed with acceptable perioperative outcomes, without conversions or major complications. However, as this technology is very recent, further studies with a long-term follow-up are awaited to access postoperative functional and oncological outcomes.

Predictors of urinary function recovery after laparoscopic and robot-assisted radical prostatectomy

ABSTRACT Introduction: Even in the era of laparoscopic radical prostatectomy (LRP) and robot-assisted laparoscopic radical prostatectomy (RALP), we sometimes encounter patients with severe urinary incontinence after surgery. The aim of the present study was to identify predictors of urinary continence recovery among patients with urinary incontinence immediately after surgery (UIIAS). Materials and Methods: We identified 274 patients with clinically localized prostate cancer who underwent LRP and RALP between 2011 and 2018. UIIAS was defined as a urine loss ratio > 0.15 on the first day of urethral catheter removal. Urinary continence recovery was defined as using ≤ 1 pad/day one year after surgery. In the present study, we evaluated factors affecting urinary function recovery one year after surgery among patients with urinary incontinence immediately after LRP and RALP. Results: UIIAS was observed in 191 out of 274 patients (69.7%). A multivariate analysis identified age (< 65 years, p = 0.015) as an independent predictor affecting immediate urinary continence. Among 191 incontinent patients, urinary continence one year after surgery improved in 153 (80.1%). A multivariate analysis identified age (< 65 years, p = 0.003) and estimated blood loss (≥ 100 mL, p = 0.044) as independent predictors affecting urinary continence recovery one year after surgery. Conclusion: The present results suggest that younger patients and patients with higher intraoperative blood loss recover urinary continence one year after surgery even if they are incontinent immediately after surgery.

Comparing the outcomes of robotic assisted radical prostatectomy in black and white men: Experience of a high-volume center

ABSTRACT Background: Global cancer incidence ranks Prostate Cancer (CaP) as the second highest overall, with Africa and the Caribbean having the highest mortality. Previous literature suggests disparities in CaP outcomes according to ethnicity, specifically functional and oncological are suboptimal in black men. However, recent data shows black men achieve post radical prostatectomy (RP) outcomes equivalent to white men in a universally insured system. Our objective is to compare outcomes of patients who self-identified their ethnicity as black or white undergoing RP at our institution. Materials and methods: From 2008 to 2017, 396 black and 4929 white patients underwent primary robotic-assisted radical prostatectomy (RARP) with a minimum follow-up of 5 years. Exclusion criteria were concomitant surgery and cancer status not available. A propensity score (PS) match was performed with a 1:1, 1:2, and 1:3 ratio without replacement. Primary endpoints were potency, continence recovery, biochemical recurrence (BCR), positive surgical margins (PSM), and post-operative complications. Results: After PS 1:1 matching, 341 black vs. 341 white men with a median follow-up of approximately 8 years were analyzed. The overall potency and continence recovery at 12 months was 52% vs 58% (p=0.3) and 82% vs 89% (p=0.3), respectively. PSM rates was 13.4 % vs 14.4% (p = 0.75). Biochemical recurrence and persistence PSA was 13.8% vs 14.1% and 4.4% vs 3.2% respectively (p=0.75). Clavien-Dindo complications (p=0.4) and 30-day readmission rates (p=0.5) were similar. Conclusion: In our study, comparing two ethnic groups with similar preoperative characteristics and full access to screening and treatment showed compatible RARP results. We could not demonstrate outcomes superiority in one group over the other. However, this data adds to the growing body of evidence that the racial disparity gap in prostate cancer outcomes can be narrowed if patients have appropriate access to prostate cancer management. It also could be used in counseling surgeons and patients on the surgical intervention and prognosis of prostate cancer in patients with full access to gold-standard screening and treatment.

Estudo comparativo entre os resultados per e pós-operatórios da nefrectomia parcial laparoscópica e da laparoscópica assistida por robô / Comparative study between the pre- and postoperative results of laparoscopic partial nephrectomy and robot-assisted laparoscopic nephrectomy

A incidência dos casos de neoplasia de rim tem aumentado consideravelmente e o emprego da cirurgia minimamente invasiva poupadora de néfrons é, atualmente, considerado o padrão ouro para tumores T1a e T1b. Essa cirurgia pode ser realizada de forma minimamente invasiva, por meio da técnica laparoscópica e laparoscópica assistida por robô. No entanto, faz-se necessário um estudo para avaliar os resultados dessas duas técnicas, tendo em vista uma crescente difusão da técnica robô assistida e um maior número de cirurgiões em treinamento. Soma-se a isso a importância de preservação renal e de segurança oncológica, possibilitada pela nefrectomia parcial, que ainda é subutilizada devido à maior dificuldade técnica de realizá-la pela via laparoscópica. OBJETIVO: comparar a cirurgia aparoscópica com a cirurgia laparoscópica assistida por robô na realização da nefrectomia parcial, no período per e pós-operatório, quanto aos resultados de cada uma delas. MÉTODO: trata-se de uma coorte retrospectiva de 209 pacientes com neoplasia de rim localizado, submetidos à nefrectomia parcial laparoscópica no Hospital Madre Teresa, no período de outubro de 2014 a junho de 2019, e à nefrectomia parcial assistida por robô, no Hospital Felício Rocho, entre os anos de 2018 a 2021. Os dados do estudo foram coletados e gerenciados, usando-se as ferramentas eletrônicas de captura de dados REDCap, além da pesquisa de prontuário. A análise dos dados foi realizada utilizandose o software SPSS versão 25. Em todos os testes estatísticos, foi considerado um nível de significância de 5%. RESULTADOS: em relação a fatores clínicos e cirúrgicos, observou-se que o tempo cirúrgico em horas, a permanência no hospital e a permanência no CTI foram maiores no grupo de nefrectomia parcial laparoscópica, quando comparados à nefrectomia parcial laparoscópica assistida por robô. Variáveis como complicações operatórias, hemotransfusão no per operatório, tipo de tumor, tamanho da lesão na peça cirúrgica e margens acometidas não mostraram diferença significativa entre os grupos (p>0,05). As complicações pós-operatórias foram mais frequentes no grupo de nefrectomia parcial laparoscópica (16,7%) quando comparadas ao grupo nefrectomia parcial laparoscópica assistida por robô (7,0%). O estadiamento pós-operatório também apresentou diferença significativa entre os grupos, sendo que os estádios iniciais (T0 e T1) foram proporcionalmente maiores no grupo de nefrectomia parcial laparoscópica, quando comparados ao grupo nefrectomia parcial laparoscópica assistida por robô. Já os estádios (T2 e T3) foram mais incidentes no grupo de nefrectomia parcial laparoscópica assistida por robô em relação ao outro grupo. CONCLUSÃO: com base nos resultados, pode-se afirmar que a técnica robô-assistida apresenta ganhos técnicos significativos e possibilita a ressecção de tumores tecnicamente mais difíceis, com menor taxa de complicações no pós-operatório. Apresenta tempo cirúrgico e tempo de internação hospitalar reduzidos em comparação com a cirurgia realizada por laparoscopia, além de alta precoce para aqueles que necessitam de unidade de terapia intensiva no pósoperatório.

Kidney cancer cases have increased considerably, and minimally invasive nephronsparing surgery is currently considered the gold standard for T1a and T1b tumors. This surgery can be performed minimally invasively, using the laparoscopic and robotassisted laparoscopic techniques. However, a study to evaluate the results of these two techniques is necessary, considering the increasing diffusion of the robot-assisted technique and the larger number of surgeons in training. Added to this is the importance of renal preservation and oncologic safety, made possible by partial nephrectomy, which is still underutilized due to the incredible technical difficulty of performing it laparoscopically. OBJECTIVE: To compare laparoscopic surgery with robot-assisted laparoscopic surgery in performing partial nephrectomy, in the per- and postoperative periods, regarding the results of each. METHODS: This is a retrospective cohort of 209 patients with localized kidney cancer who underwent laparoscopic partial nephrectomy at Hospital Madre Teresa from October 2014 to June 2019 and robot-assisted partial nephrectomy at Hospital Felício Rocho between the years 2018 and 2021. Study data were collected and managed using REDCap electronic data capture tools and chart search. Data analysis was performed using SPSS version 25 software. A 5% significance level was considered in all statistical tests. RESULTS: Regarding clinical and surgical factors, surgical time in hours, hospital stay, and intensive care unit stay were higher in the laparoscopic partial nephrectomy group when compared to the robot-assisted laparoscopic partial nephrectomy. Variables such as operative complications, intraoperative blood transfusion, tumor type, size of the lesion on the surgical specimen, and affected margins showed no significant difference between groups (p>0.05). The variable postoperative complications showed higher frequency in the laparoscopic partial nephrectomy group (16.7%) compared to the robot-assisted partial nephrectomy group (7.0%). Postoperative staging also showed significant differences between groups, with early stages (T0 and T1) proportionally higher in the laparoscopic partial nephrectomy group when compared to the robot-assisted laparoscopic partial nephrectomy group. Stages (T2 and T3) were higher in the laparoscopic robot-assisted partial nephrectomy group compared to the other group. CONCLUSION: Based on the results, it can be stated that the robot-assisted technique presents significant technical gains and allowed the resection of tumors that are technically more difficult and with a lower rate of complications in the postoperative period. It presented reduced surgical time and hospital stay compared to the surgery performed by laparoscopy. In patients who need to be referred to the intensive care unit postoperatively, the robot-assisted technique demonstrates a reduction in the length of stay in the intensive care unit.

Robotic approach to remove four tailgut cyst cases in Brazil: a case series

ABSTRACT Tailgut cysts are rare congenital lesions that are remnants of the embryonic hindgut. This abnormality presents with non-specific symptoms or no symptoms; therefore, misdiagnosis is common. Here, we present four cases of tailgut cysts that were successfully removed using a robotic surgical approach. A 42-year-old woman with tenesmus, pain in the right gluteal region, and discomfort in the rectal region during evacuation was referred to our medical center. Another patient was a 28-year-old woman who presented with the same symptoms to our general practitioner. Both patients underwent upper abdominal and pelvic magnetic resonance imaging that revealed a tailgut cyst. Further, a 36-year-old woman was referred with coccyx and hypogastric pain. Magnetic resonance imaging revealed two pararectal cystic formations. She underwent robot-assisted surgery, and after analysis by a pathologist, the conclusion was that the tailgut cyst was associated with scarring fibrosis. A 55-year-old woman with posterior epigastric pelvic pain associated with heartburn underwent robot-assisted surgery to resect a retroperitoneal tumor. These cases highlighted the importance of tailgut cysts in the differential diagnosis of rectal lesions. Surgical treatment is preferred because malignant transformations can occur. The difference between laparoscopic and robotic approaches is the better visualization and stability of the latter, inducing less tissue damage. Robotic resection is a safe procedure, especially in patients with a narrow pelvis, because it reduces tissue damage.

Bypass gástrico em Y de Roux robótico versus laparoscópico: estudo retrospectivo em único centro / Robotic versus laparoscopic roux-en-y-gastric bypass: a retrospective study in a single center

ABSTRACT BACKGROUND: Bariatric surgery is the best treatment option for patients with obesity. As a result of the advancement of technology, the robotic gastric bypass presents promising results, despite its still high costs. AIMS: The aim of this study was to compare patients submitted to a robotic versus a laparoscopic gastric bypass at a single center by a single surgeon. METHODS: This retrospective study collected data from the medical records of 221 patients (121 laparoscopic procedures versus 100 with daVinci platform). The variables analyzed were sex, age, body mass index, comorbidities, surgical time, length of stay, and complications. RESULTS: The mean surgical time for patients in the robotic group was shorter (102.41±39.44 min versus 113.86±39.03 min, p=0.018). The length of hospital stay in robotic patients was shorter (34.12±20.59 h versus 34.93±11.74 h, p=0.007). There were no serious complications. CONCLUSIONS: The group submitted to the robotic method had a shorter surgical time and a shorter hospital stay. No difference was found regarding strictures, bleeding, or leakage.

RESUMO RACIONAL: A cirurgia bariátrica é a melhor opção de tratamento para pacientes portadores de obesidade. Em decorrência do avanço da tecnologia, o bypass gástrico robótico apresenta resultados promissores, apesar de seus custos ainda elevados. OBJETIVOS: Comparar pacientes submetidos a bypass gástrico robótico versus laparoscópico em um único centro por um único cirurgião. MÉTODOS: Estudo retrospectivo com coleta de dados dos prontuários de 221 pacientes (121 procedimentos laparoscópicos vs 100 com plataforma daVinci). As variáveis analisadas foram sexo, idade, IMC, comorbidades, tempo cirúrgico, tempo de internação e complicações. RESULTADOS: O tempo cirúrgico médio dos pacientes do grupo robótico foi menor (102,41 ± 39,44 min. vs 113,86±39,03 min, p=0,018). O tempo de internação em pacientes robóticos foi menor (34,12±20,59 h vs 34,93±11,74 h, p=0,007). Não houve complicações graves. CONCLUSÕES: O grupo submetido ao método robótico apresentou menor tempo cirúrgico e menor tempo de internação. Nenhuma diferença foi encontrada na amostra em relação a estenoses, sangramento ou vazamento.

Systematization of perioperative nursing care in robotic surgery: instrument validation / Sistematización de la atención de enfermería perioperatoria en la cirugía robotizada: validación de instrumento / Sistematização da assistência de enfermagem perioperatória na cirurgia robótica: validação de instrumento

ABSTRACT Objective: To develop and validate an instrument to assist in the systematization of perioperative nursing care in robotic surgery. Methods: Methodological study developed in four phases: content survey; textual elaboration; content validation by the group of expert judges and target audience; and elaboration of the electronic instrument layout. Results: Eleven expert judges and seven evaluators of the target audience participated. For validation, the Content Validity Index (CVI) was used with a 0.78 cutoff point. The instrument total CVI after evaluation was 0.90 by the expert judges and 0.88 by the target audience. Conclusion: The tool built was proved satisfactory for the systematization of perioperative nursing care. The instrument construction was based on the updated scientific literature and validated by the expert judges and target audience.

RESUMEN Objetivo: Desarrollar y validar un instrumento para auxiliar en la sistematización de la atención de enfermería perioperatoria en cirugía robotizada. Métodos: Estudio metodológico desarrollado en cuatro fases: análisis del contenido; elaboración textual; validación del contenido por el equipo de jueces especialistas y público objetivo; y elaboración del diseño del instrumento electrónico. Resultados: Participaron 11 jueces especialistas y 7 evaluadores del público objetivo. Para validación, se utilizó el Índice de Validez de Contenido (IVC) con punto de corte en 0,78. El IVC total del instrumento después de la evaluación fue de 0,90 por los jueces especialistas y 0,88 por el público objetivo. Conclusión: La herramienta construida se mostró satisfactoria para realización de la sistematización de la atención de enfermería perioperatoria. La construcción del instrumento fue basada en la literatura científica actualizada y validada por los jueces especialistas y público objetivo.

RESUMO Objetivo: Desenvolver e validar um instrumento para auxiliar na sistematização da assistência de enfermagem perioperatória em cirurgia robótica. Métodos: Estudo metodológico desenvolvido em quatro fases: levantamento do conteúdo; elaboração textual; validação do conteúdo pelo grupo de juízes especialistas e público-alvo; e elaboração do layout do instrumento eletrônico. Resultados: Participaram 11 juízes especialistas e 7 avaliadores do público-alvo. Para validação, utilizou-se o Índice de Validade de Conteúdo (IVC) com ponto de corte em 0,78. O IVC total do instrumento após avaliação foi de 0,90 pelos juízes especialistas e 0,88 pelo público-alvo. Conclusão: A ferramenta construída se mostrou satisfatória para realização da sistematização da assistência de enfermagem perioperatória. A construção do instrumento foi embasada na literatura científica atualizada e validada pelos juízes especialistas e público-alvo.

Robotic assisted versus laparoscopic distal pancreatectomy: a retrospective study / Pancreatectomia distal robótica versus laparoscópica: um estudo retrospectivo

ABSTRACT BACKGROUND: Minimally invasive distal pancreatectomy (MIDP) is associated with less blood loss and faster functional recovery. However, the benefits of robotic assisted distal pancreatectomy (RDP) over laparoscopic distal pancreatectomy (LDP) are unknown. AIMS: To compare RDP versus LDP for surgical treatment of benign lesions, pre-malignant and borderline malignant pancreatic neoplasias. METHODS: This is a retrospective study comparing LDP with RDP. Main outcomes were overall morbidity and overall costs. Secondary outcomes were pancreatic fistula (PF), infectious complications, readmission, operative time (OT) and length of hospital stay (LOS). RESULTS: Thirty patients submitted to LDP and 29 submitted to RDP were included in the study. There was no difference regarding preoperative characteristics. There was no difference regarding overall complications (RDP - 72,4% versus LDP - 80%, p=0,49). Costs were superior for patients submitted to RDP (RDP=US$ 6,688 versus LDP=US$ 6,149, p=0,02), mostly due to higher costs of surgical materials (RDP=US$ 2,364 versus LDP=1,421, p=0,00005). Twenty-one patients submitted to RDP and 24 to LDP developed pancreatic fistula (PF), but only 4 RDP and 7 LDP experienced infectious complications associated with PF. OT (RDP=224 min. versus LDP=213 min., p=0.36) was similar, as well as conversion to open procedure (1 RDP and 2 LDP). CONCLUSIONS: The postoperative morbidity of robotic distal pancreatectomy is comparable to laparoscopic distal pancreatectomy. However, the costs of robotic distal pancreatectomy are slightly higher.

RESUMO RACIONAL: A pancreatectomia distal minimamente invasiva (PDMI) está associada a menos perda sanguínea e recuperação funcional mais rápida, no entanto, os benefícios da pancreatectomia distal robótica (PDR) são desconhecidos quando comparada a pancreatectomia distal laparoscópica (PDL). OBJETIVOS: Comparar PDR versus PDL no tratamento cirúrgico de lesões benignas, neoplasias pancreáticas malignas, pré-malignas e limítrofes. MÉTODOS: Estudo retrospectivo comparando PDL com PDR. Os desfechos primários avaliados foram morbidade e custos hospitalares. Os desfechos secundários foram fístula pancreática (FP), complicações infecciosas, readmissão, tempo cirúrgico e tempo de internação hospitalar (TIH). RESULTADOS: Trinta pacientes submetidos a PDL e 29 submetidos a PDR foram incluídos no estudo. Não houve diferença em relação às características pré-operatórias. Não houve diferença em relação às complicações gerais (PDL - 72,4% versus PRD - 80%, p=0,49). Os custos foram superiores para PDR (PDR=US$ 6688 versus PDL=US$ 6149, p=0,02), principalmente devido aos custos mais elevados de materiais cirúrgicos (PDR=US$ 2364 versus PDL=1421, p=0,00005). Vinte e um pacientes submetidos a PDR e 24 submetidos a PDL desenvolveram fístula pancreática (PF), no entanto, apenas 4 submetidos PDR e 7 a PDL apresentaram complicações infecciosas associadas a FP. O tempo cirúrgico (PDR=224 min. versus PDL=213 min., p=0,36) e a conversão para cirurgia aberta (1 PDR e 2 PDL) não tiveram diferença estatística. CONCLUSÕES: A morbidade pós operatória da pancreatectomia distal robótica é comparável à pancreatectomia distal laparoscópica. Entretando, os custos da pancreatectomia distal robótica são mais elevados.

Relationship between learning styles and simulation in surgery / Relação entre os estilos de aprendizagem e simulação em cirurgia

Abstract: Introduction: It was found that the good performance in conventional techniques was not transferable to minimally-invasive alternatives, and then simulators were created for improved learning. Objective: To assess whether robotic virtual reality simulation conditions ability for laparoscopy in medical students, associating the VARK tool and Mind Styles to determine whether there is a correlation between learning styles and the ability to develop these skills. Methods: Randomization of 3 groups of medical students was performed, where one of the groups performed a simulation of a surgical knot exercise in the laparoscopy box and another, the same exercise on the robot console. The third group did not simulate. All participants took a practical test in the laparoscopy box and their performances were evaluated. Moreover, a pre-test and a post-test were applied, in addition to the VARK and mind styles methods, to assess whether there was a difference in performance between the different learning styles. Results: The practical test scores were relatively homogeneous between the groups and between the Mind Styles and VARK categories, with no significant difference being found between the groups; therefore, it was not possible to demonstrate that learning styles interfered with the results of this study. There was only a significant difference between the pre-test scores of at least one pair of the groups and between the Laparoscopy and Robotics groups, with a p-value of 0.038. Conclusion: There was no statistical significance between learning styles and performance regarding the proposed tasks.

Resumo: Introdução: Constatou-se que o bom desempenho em técnicas convencionais não se transferia para as minimamente invasivas, e, com isso, foram criados os simuladores para melhor aprendizado. Objetivo: Este estudo teve como objetivo avaliar se a simulação em realidade virtual robótica promove habilidade para laparoscopia em acadêmicos de Medicina, associando a ferramenta VARK e o mind styles (GSD) para determinar se há correlação dos estilos de aprendizagem com a capacidade de desenvolver essas habilidades. Método: Realizou-se randomização de três grupos de acadêmicos de Medicina, em que um dos grupos fez simulação de um exercício de nó cirúrgico na caixa de laparoscopia (CL), e outro, o mesmo exercício no console do robô. O terceiro grupo não participou da simulção. Todos os participantes fizeram um teste prático na CL, e as performances deles foram avaliadas. Ademais, foram aplicados um pré-teste e um pós-teste, além do formulário VARK e GSD, para avaliar se havia diferença de performance entre os diferentes estilos de aprendizagem. Resultado: As notas das provas práticas foram relativamente homogêneas entre grupos e entre as categorias de Mind Styles e do VARK. Como não se encontrou diferença significativa entre os grupos, não foi possível demonstrar que os estilos de aprendizagem interferiram nos resultados deste estudo. Houve apenas diferença significativa entre as notas do pré-teste de pelo menos um par de grupos e entre os grupos laparoscopia e robótica com p-valor 0,038. Conclusão: Não houve significância estatística entre os estilos de aprendizagem e o desempenho nas tarefas propostas.

Effect of transcutaneous electrical acupoint stimulation on postoperative pulmonary function in patients undergoing robot-assisted radical resection of colon cancer / 中华麻醉学杂志

Objective:To evaluate the effect of transcutaneous electrical acupoint stimulation (TEAS) on postoperative pulmonary function in the patients undergoing robot-assisted radical resection of colon cancer.Method:Ninety-four patients of either sex, aged 50-80 yr, with body mass index of 18-25 kg/m 2, of American Society of Anesthesiologists physical status Ⅰ-Ⅲ, with ARISCAT grade of medium risk, undergoing elective robot-assisted radical resection of colon cancer, were enrolled in this study. The patients were divided into TEAS group (group T, n=47) and sham-TEAS group (group S, n=47) using a random number table method. In group T, patients received 30 min of TEAS at Hegu (LI4), Quchi (LI11), Zusanli (ST36) and Feishu (BL13) between 5: 00 and 7: 00 a. m. from 1st day before operation to 3rd day after operation, with disperse-dense wave 2/100 Hz, and the stimulation intensity was the maximum intensity that the patient could tolerate. Patients in group S were also connected to the device without electrical stimulation. Both groups adopted lung-protective ventilation strategy during operation. The oxygenation index was calculated at the time of entering the operating room (T 0), 5 min after anesthesia induction (T 1), 5 min of pneumoperitoneum (T 2), 5 min after changing to Trendelenburg position (T 3) and immediately after the end of pneumoperitoneum (T 4). Peak airway pressure, plateau airway pressure, driving pressure and dynamic lung compliance were recorded at T 0-T 4. The serum concentration of lung Clara cell 16 kDa protein was recorded using enzyme-linked immunosorbent assay at T 0, T 4 and 2 h after extubation (T 5). On 1 day before operation and 1, 3 and 7 days after operation, the forced expiratory volume in the first second (FEV 1) and forced vital capacity (FVC) were measured, and the FEV 1/FVC was calculated, and the concentrations of serum tumor necrosis factor-alpha, interleukin-6 and cardiopulmonary resuscitation were simultaneously determined using enzyme-linked immunosorbent assay. The occurrence of pulmonary complications within 7 days after operation was recorded. Results:There was no significant difference in pH values, PaCO 2, oxygenation index, peak airway pressure, plateau airway pressure, driving pressure, and dynamic lung compliance at each time point between the two groups ( P>0.05). Compared with S group, the serum Clara cell 16 kDa protein concentrations were significantly decreased at T 5, FEV 1 and FVC were increased at 3 and 7 days after operation, the serum tumor necrosis factor-alpha, interleukin-6 and cardiopulmonary resuscitation concentrations were decreased at 1, 3 and 7 days after operation, the incidence of unexpected oxygen supply and total incidence of postoperative pulmonary complications were decreased ( P<0.05), and no significant change was found in FEV 1/FVC at each time point in T group ( P>0.05). Conclusions:TEAS can improve lung function in the patients undergoing robot-assisted radical resection of colon cancer.

Robot-assisted screws fixation for the treatment of fragility fractures of the pelvis / 中华骨科杂志

Objective:To investigate the clinical outcomes of fragility fractures of the pelvis (FFP) treated with robot-assisted screws, minimally reduction according to the pelvic osseous pathways.Methods:A retrospective analysis was performed on the data of 50 elderly patients with FFP treated by the Department of Trauma and Pelvic Trauma of Tianjin Hospital from March 2016 to October 2021, and the 50 patients with FFP were divided into robotic-assisted screw fixation group (robot group) and open reduction steel plate fixation group (open group) according to the fixation method. There were 30 patients in the Robot group, 6 males and 24 females, average age 75.03±7.32 years (range, 60-90 years). According to Rommens and Hofmann FFP classification, there were 4 cases of IIc type, 8 cases of IIIa type, 1 case of IIIb type, 12 cases of IIIc type, 3 cases of IVa type, 2 cases of IVb type. There were 20 patients in the open group, 5 males and 15 females, average age 71.90±5.51 years (range, 62-85 years). According to Rommens and Hofmann FFP classification, there were 2 cases of IIc type, 6 cases of IIIa type, 9 cases of IIIc type, 3 cases of IVa type. The two groups were compared with age, pelvic fracture classification, operation time, intraoperative blood loss, fracture reduction quality, visual analogue scale (VAS), Majeed score, and wound healing or not.Results:All patients were followed up for 12.72 months (range, 6-24 months). In the robot group, the operation time was 50.17±19.32 min (range, 30-120 min), and intraoperative blood loss was 55.50±28.60 ml (range, 10-150 ml); in the open group, the operation time was 92.25±27.55 min (range, 60-180 min), and intraoperative blood loss was 217.50±67.20 ml (range, 150-400 ml), there were statistical differences ( t=6.36, P<0.001; t=11.72, P<0.001). According to Mears and Velyvis imaging evaluation criteria, in the robot group, anatomical reduction were achieved in 10 cases, satifactory reduction were achieved in 20 cases; in the open group, anatomical reduction were achieved in 14 cases, satifactory reduction were achieved in 6 cases, there were statistical differences (χ 2=6.46, P=0.011). In the robot group, VAS for pelvic pain was 7.33±1.32 points (range, 4-9 points) before operation, 4.13±1.07 points (range, 3-8 points) one week after surgery, and 2.30±0.84 points (range, 1-5 points) at the last follow-up; in the open group, VAS for pelvic pain was 7.45±1.23 points (range, 5-9 points) before operation, 5.25±1.25 points (range, 3-8 points) one week after surgery, and 2.80±1.24 points (range, 1-6 points) at the last follow-up, the difference between the two groups was statistically significant ( F=162.18, P<0.001; F=70.18, P<0.001), the difference between the two groups was statistically significant 1 week after surgery ( t=3.37, P=0.001), and there was no statistically significant difference between the two groups before surgery and the last follow-up ( P>0.05). The Majeed score was 82.10±4.80 (range, 65-95) in the robot group, 77.60±5.40 (range, 70-93) in the open group at the last follow-up, there were statistical differences ( t=3.09, P=0.003). There was no wound complication in the robot group, there were 4 cases with wound infection or rupture in the open group. One LC-II screw loosen in the robot group, which needed reoperation with cement, there was also 1 screw of plate loosening in the open group with no reoperation. Conclusion:Robot-assisted screws fixation with minimally reduction based pelvic osseous pathways shows satisfactory clinical outcomes, satisfactory reduction, effective pain relief, and fewer postoperative complications in treatment of elderly FFP.