Mahmoud Farzat

Mr. Mahmoud Farzat

Diakonie Klinikum Siegen, Siegen, North Rhine-Westphalia, Germany
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Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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25 March 2023 in Journal of Clinical Medicine
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Journal Article
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MFMahmoud Farzat
Mahmoud Farzat
JRJosef Rosenbauer
Josef Rosenbauer
CTChristian Tanislav
Christian Tanislav
FWFlorian Wagenlehner
Florian Wagenlehner
Elevated prostate volume is considered to negatively influence postoperative outcomes after robot-assisted radical prostatectomy (RARP). We aim to investigate the influence of prostate volume on readmissions and complications after RARP. Methods: A total of 500 consecutive patients who underwent RARP between April 2019 and August 2022 were included. Patients were dichotomized into two groups using a prostate volume cut-off of 50 mL (small and normal prostate (SNP) n = 314, 62.8%; large prostate n = 186, 37.2%). Demographic, baseline, and perioperative data were analyzed. The postoperative complications and readmission rates within 90 days after RARP were compared between groups. A univariate linear analysis was performed to investigate the association between prostate volume and other relevant outcomes. Results: Patients with larger prostates had a higher IPSS score, and therefore, more relevant LUTS at the baseline. They had higher ASA scores (p = 0.015). They also had more catheter days (mean 6.6 days for SNP vs. 7.5 days for LP) (p = 0.041). All oncological outcomes were similar between the groups. Although statistical analysis showed no significant difference between the groups (p = 0.062), a trend for minor complications in patients with larger prostates, n = 37/186 (19.8%) for the LP group vs. n = 37/314 (11.7%) in the SNP group, was observed. Namely, acute urinary retention and secondary anastomosis insufficiency. Major complications with an SNP (4.4%) and LP (3.7%) (p = 0.708) and readmissions with an SNP (6.25%) and LP (4.2%) (p = 0.814) were infrequent and distributed equally between the groups. In univariate analysis, prostate volume could solely predict a longer console time (p = 0.005). Conclusions: A higher prostate volume appears to have minimal influence on the perioperative course after RARP. It can prolong catheter days and increase the incidence of minor complications such as acute urinary retention. However, it might predict minor changes in operating time. Yet, prostate volume has less influence on major complications, readmissions, or oncological results.

Verified
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Open access
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MFMahmoud Farzat
Mahmoud Farzat
ISIsmail Sharabaty
Ismail Sharabaty
CTChristian Tanislav
Christian Tanislav
YAYaman Alsaid
Yaman Alsaid
FWFlorian Wagenlehner
Florian Wagenlehner
Due to more difficult intraoperative courses, elevated rates of case abortion and unfavored postoperative outcomes in obese patients, urologists tend to consider other therapeutic modalities than prostate removal in very obese patients. With the surge in robotic surgery in the last two decades, more obese patients have undergone robot-assisted radical prostatectomy (RARP). Objective: This current, monocentric, retrospective serial study investigates primarily the impact of obesity on readmissions and secondarily the major complications of RARP. Methods: Five hundred patients from one referral center who underwent RARP between April 2019 and August 2022 were included in this retrospective study. To investigate the impact of patient BMI on postoperative outcomes, we divided our cohort into two groups with a cut-off of 30 kg/m2 (according to the WHO definition). Demographic and perioperative data were analyzed. Postoperative complications and readmission rates were compared between standard, normal patients (NOBMI—BMI under 30; n = 336, 67.2%) and overweight patients (OBMI—BMI equal to/more than 30; n = 164, 32.8%). Results: OBMI patients had bigger prostates on TRUS, more comorbidities and worse baseline erectile function scores. They also received fewer nerve-sparing procedures than their counterparts (p = 0.005). Analysis showed no statistically significant differences in readmission rates or in minor or major complications (p = 0.336, 0.464 and 0.316, respectively). In a univariate analysis, BMI could predict positive surgical margins (p = 0.021). Conclusion: Performing RARP in obese patients seems to be safe and feasible, without major adverse events or elevated readmission rates. Obese patients should be informed preoperatively about the elevated risk of higher PSMs and technically more difficult nerve-sparing procedures.

12 March 2023 in Geriatrics
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UNUlrich Niemöller
Ulrich Niemöller
AAAndreas Arnold
Andreas Arnold
TSThomas Stein
Thomas Stein
MJMartin Juenemann
Martin Juenemann
MFMahmoud Farzat
Mahmoud Farzat
CTChristian Tanislav
Christian Tanislav
Background/Objectives: Depressive symptoms (DS) may interfere with comprehensive geriatric care (CGC), the specific multimodal treatment for older patients. In view of this, the aim of the current study was to investigate the extent to which DS occur in older hospitalized patients scheduled for CGC and to analyze the associated factors. Furthermore, we aimed to investigate whether DS are relevant with respect to outcomes after CGC. Methods: For this retrospective study, all patients fulfilling the inclusion criteria were selected by reviewing case files. The main inclusion criterion was the completion of CGC within the defined period (May 2018 and May 2019) in the geriatrics department of the Diakonie Hospital Jung-Stilling Siegen (Germany). The Geriatric Depression Scale was used to asses DS in older adults scheduled for CGC (0–5, no evidence of DS; 6–15 points, DS). Scores for functional assessments (Timed Up and Go test (TuG), Barthel Index, and Tinetti Gait and Balance test) were compared prior to versus after CGC. Factors associated with the presence of DS were studied. Results: Out of the 1263 patients available for inclusion in this study, 1092 were selected for the analysis (median age: 83.1 years (IQR 79.1–87.7 years); 64.1% were female). DS (GDS > 5) were found in 302 patients (27.7%). The proportion of female patients was higher in the subgroup of patients with DS (85.5% versus 76.3%, p = 0.024). Lower rates of patients diagnosed with chronic pulmonary obstructive disease were detected in the subgroup of patients without DS (8.0% versus 14.9%, p = 0.001). Higher rates of dizziness were observed in patients with DS than in those without (9.9% versus 6.2%, p = 0.037). After CGC, TuG scores improved from a median of 4 to 3 (p < 0.001) and Barthel Index scores improved from a median of 45 to 55 (p < 0.001) after CGC in both patients with and without DS. In patients with DS, the Tinetti score improved from a median of 10 (IQR: 4.75–14.25) prior to CGC to 14 (IQR 8–19) after CGC (p < 0.001). In patients without DS, the Tinetti score improved from a median of 12 (IQR: 6–7) prior to CGC to 15 (IQR 2–20) after CGC (p < 0.001). Conclusions: DS were detected in 27.7% of the patients selected for CGC. Although patients with DS had a poorer baseline status, we detected no difference in the degree of improvement in both groups, indicating that the performance of CGC is unaffected by the presence of DS prior to the procedure.

Verified
Journal Article
Open access
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MFMahmoud Farzat
Mahmoud Farzat
MEMohamed Elsherif
Mohamed Elsherif
FWFlorian Wagenlehner
Florian Wagenlehner
Longer operating time in radical prostatectomy may increase the risk of perioperative complications. Various factors such as cancer extent, the procedure’s level of difficulty, habitus and previous surgeries may lengthen robot-assisted radical prostatectomy (RARP) and therefore compromise outcomes. Objective: this study investigates the influence of operating time on outcomes after RARP in real life settings in a monocentric single surgeon study. Methods: a total of 500 sequential patients who were operated on between April 2019 and August 2022 were involved. Men were allocated to three groups short (n = 157; 31.4%), under or equal to 120 min; average (n = 255; 51%), between 121 and 180 min; long (n = 88; 17.6%), above 180 min console time. Demographic, baseline and perioperative data were analyzed and compared between groups. Univariate logistic regression was completed to investigate the association between console time and outcomes and to predict factors which may prolong surgery. Results: hospital stay and catheter days were significantly longer in group 3 with medians of 6 and 7 days (p < 0.001 and <0.001, respectively). Those findings were confirmed in univariate analysis, with p = 0.012 for catheter days and p < 0.001 for hospital stay. Moreover, major complications were higher in patients with longer procedures, at p = 0.008. Prostate volume was the only predictor of a prolonged console time (p = 0.005). Conclusion: RARP is a safe procedure and most patients will be discharged uneventfully. Yet, a longer console time is associated with a longer hospital stay, longer catheter days and major complications. Caution has to be taken in the large prostate to avoid longer procedures, which may prevent postoperative adverse events.

22 April 2023 in Journal of Clinical Medicine
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Journal Article
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MFMahmoud Farzat
Mahmoud Farzat
PWPeter Weib
Peter Weib
ISIurii Sukhanov
Iurii Sukhanov
JRJosef Rosenbauer
Josef Rosenbauer
CTChristian Tanislav
Christian Tanislav
FWFlorian Wagenlehner
Florian Wagenlehner
Objectives: Neoadjuvant hormonal therapy (NHT) preceding robot-assisted radical prostatectomy (RARP) may be beneficial in high-risk cases to facilitate surgical resection. Yet, its improvement in local tumor control is not obvious. Its benefit regarding overall cancer survival is also not evident, and it may worsen sexual and hormonal functions. This study explores the effect of NHT on the perioperative course after RARP. Methods: In this study, 500 patients from a tertiary referral center who underwent RARP by a specialized surgeon were retrospectively included. Patients were divided into two groups: the NHT (n = 55, 11%) group, which included patients who received NHT (median: 1 month prior to RARP), and the standard non-NHT (NNHT) group (n = 445, 89%). Demographic and perioperative data were analyzed. Postoperative results, complications, and readmission rates were compared between the groups. Results: NHT patients were heterogeneous from the rest regarding cancer parameters such as PSA (25 vs. 7.8 ng/mL) and tumor risk stratification, and they were more comorbid (p = 0.006 for the ASA score). They also received fewer nerve-sparing procedures (14.5% vs. 80.4%), while the operation time was similar. Positive surgical margins (PSM) (21.8% vs. 5.4%) and positive lymph nodes (PLN) (56.4% vs. 12.7%) were significantly higher in the NHT group compared to the non-NHT (NNHT) group. Hospital stay was equal, whereas catheter days were 3 days longer in the NHT group. NHT patients also suffered more minor vesicourethral-anastomosis-related complications. Major complications (p = 0.825) and readmissions (p = 0.070) did not differ between groups. Conclusion: Patients receiving NHT before RARP did not experience more major complications or readmissions within 90 days after surgery. Patients with unfavorable, high-risk tumors may benefit from NHT since it facilitates surgical resection. Randomized controlled trials are necessary to measure the advantages and disadvantages of NHT.

1 November 2024 in BMC Urology
Verified
Journal Article
Open access
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MFMahmoud Farzat
Mahmoud Farzat
SLSami-Ramzi Leyh-Bannurah
Sami-Ramzi Leyh-Bannurah
FWFlorian Wagenlehner
Florian Wagenlehner
Purpose: Robotic surgery is increasingly utilized in the treatment of urothelial carcinoma of the upper urinary tract (UTUC). This study investigates the advantages and burden of robot-assisted surgical treatment of the urothelial carcinoma of the upper urinary tract in a referral urological department, along with their functional and oncological results. Methods: The study included 66 prospectively enrolled patients who were surgically treated by a single, robotically specialized surgeon between July 2019 and December 2023. Patients were divided into three groups. Group 1: 50 patients underwent robot-assisted radical Nephroureterectomy (RANU) with bladder cuff excision, Group 2: 11 patients underwent RANU simultaneously with robot-assisted radical cystectomy (RARC), and Group 3: 5 patients underwent robot-assisted segmental ureterectomy (RASU). Clinical and oncological parameters were compared. Perioperative morbidity according to Clavien-Dindo was the primary endpoint of our study. The secondary endpoint was oncologic outcomes. Results: 37.8% of patients had locally advanced carcinomas. The average console time of RANU with bladder cuff excision was 69 min. The rate of positive surgical margins was n = 1/66 (2%). Lymphadenectomy (LAD) was performed on 30% of patients, with a mean of 13.7 lymph nodes removed. Of those who received LAD, 33% had lymph node metastasis. n = 6/66 (9%) patients received blood transfusion. The overall complication rate was 24%. The readmission rate was 7.5%. With a median follow-up of 26 months, the 2-year recurrence-free survival rate was 84.4%, and the 2-year overall survival rate was 94%. Conclusion: Robotic surgery is a feasible option for treating UTUC that can be adapted to meet the surgical needs of each patient. Prospective studies are warranted to confirm its benefits.