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Moretto S, Saita A, Scoffone CM, Talso M, Somani BK, Traxer O, Angerri O, Knoll T, Liatsikos E, Herrmann TRW, Ulvik Ø, Skolarikos A, Cracco CM, Keller EX, Paciotti M, Piccolini A, Uleri A, Tailly T, Carmignani L, Pietropaolo A, Corrales M, Lughezzani G, Lazzeri M, Fasulo V, De Coninck V, Arena P, Nagele U, Ferretti S, Kronenberg P, Perez-Fentes D, Osther PJ, Goumas IK, Acquati P, Ajayi L, Diana P, Casale P, Buffi NM. Ureteral stricture rate after endoscopic treatments for urolithiasis and related risk factors: systematic review and meta-analysis. World J Urol 2024; 42:234. [PMID: 38613692 DOI: 10.1007/s00345-024-04933-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 03/15/2024] [Indexed: 04/15/2024] Open
Abstract
PURPOSE We aimed to accurately determine ureteral stricture (US) rates following urolithiasis treatments and their related risk factors. METHODS We conducted a systematic review and meta-analysis following the PRISMA guidelines using databases from inception to November 2023. Studies were deemed eligible for analysis if they included ≥ 18 years old patients with urinary lithiasis (Patients) who were subjected to endoscopic treatment (Intervention) with ureteroscopy (URS), percutaneous nephrolithotomy (PCNL), or shock wave lithotripsy (SWL) (Comparator) to assess the incidence of US (Outcome) in prospective and retrospective studies (Study design). RESULTS A total of 43 studies were included. The pooled US rate was 1.3% post-SWL and 2.1% post-PCNL. The pooled rate of US post-URS was 1.9% but raised to 2.7% considering the last five years' studies and 4.9% if the stone was impacted. Moreover, the pooled US rate differed if follow-ups were under or over six months. Patients with proximal ureteral stone, preoperative hydronephrosis, intraoperative ureteral perforation, and impacted stones showed higher US risk post-endoscopic intervention with odds ratio of 1.6 (P = 0.05), 2.6 (P = 0.009), 7.1 (P < 0.001), and 7.47 (P = 0.003), respectively. CONCLUSIONS The overall US rate ranges from 0.3 to 4.9%, with an increasing trend in the last few years. It is influenced by type of treatment, stone location and impaction, preoperative hydronephrosis and intraoperative perforation. Future standardized reporting and prospective and more extended follow-up studies might contribute to a better understanding of US risks related to calculi treatment.
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Affiliation(s)
- S Moretto
- Department of Biomedical Sciences, Humanitas University, Milan, Italy.
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy.
| | - A Saita
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - C M Scoffone
- Department of Urology, Cottolengo Hospital, Turin, Italy
| | - M Talso
- Department of Urology, Luigi Sacco University Hospital, Milan, Italy
| | - B K Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | - O Traxer
- Department of Urology, Sorbonne Université, Paris, France
| | - O Angerri
- Department of Urology, Fundació Puigvert Univ. Autonoma de Barcelona, Barcelona, Spain
| | - T Knoll
- Department of Urology, Sindelfingen Medical Center, University of Tübingen, Tübingen, Germany
| | - E Liatsikos
- Department of Urology, University Hospital of Patras, Patras, Greece
| | - T R W Herrmann
- Department of Urology, Spital Thurgau AG, Frauenfeld, Switzerland
- Hannover Medical School, Hannover, Germany
- Division of Urology, Department of Surgical Sciences, Stellenbosch University, Western Cape, South Africa
| | - Ø Ulvik
- Department of Urology, Haukeland University Hospital, Bergen, Norway
| | - A Skolarikos
- Second Department of Urology, Sismanoglio Hospital, National and Kapodistrian University of Athen, Athens, Greece
| | - C M Cracco
- Department of Urology, Cottolengo Hospital, Turin, Italy
| | - E X Keller
- Department of Urology, University Hospital Zurich, Zurich, Switzerland
| | - M Paciotti
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - A Piccolini
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - A Uleri
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - T Tailly
- Department of Urology, University Hospital Ghent, Ghent, Belgium
| | - L Carmignani
- Department of Urology, University of Milan, Milan, Italy
| | - A Pietropaolo
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | - M Corrales
- Department of Urology, Sorbonne Université, Paris, France
| | - G Lughezzani
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - M Lazzeri
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - V Fasulo
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - V De Coninck
- Department of Urology, AZ Klina, Brasschaat, Belgium
| | - P Arena
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - U Nagele
- Department of Urology, General Hospital Hall in Tirol, Hall in Tirol, Austria
| | - S Ferretti
- Department of Urology, Azienda Ospedaliero-Universitaria di Modena, Baggiovara, Italy
| | - P Kronenberg
- Department of Urology, Hospital CUF Descobertas, Lisbon, Portugal
| | - D Perez-Fentes
- Department of Urology, University Hospital Complex of Santiago de Compostela, Santiago, Spain
| | - P J Osther
- Department of Urology, Lillebaelt Hospital, University Hospital of Southern Denmark, Vejle, Denmark
| | - I K Goumas
- Department of Urology, Istituto Clinico Beato Matteo, Vigevano, Italy
| | - P Acquati
- Department of Urology, IRCCS Policlinico San Donato, Milan, Italy
| | - L Ajayi
- Department of Urology, Royal Free London NHS Foundation Trust, London, UK
| | - P Diana
- Department of Urology, Fundació Puigvert Univ. Autonoma de Barcelona, Barcelona, Spain
| | - P Casale
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
| | - N M Buffi
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Urology, Humanitas Clinical and Research Institute IRCCS, Rozzano, Milan, Italy
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Oswald D, Pallauf P, Deininger S, Herrmann TRW, Netsch C, Becker B, Fiedler M, Haecker A, Homberg R, Klein JT, Lehrich K, Miernik A, Olbert P, Schöb DS, Sievert KD, Gross AJ, Westphal J, Lusuardi L. [Safety and efficacy of en bloc vs. conventional transurethral resection of bladder tumors: a meta-analysis and systematic review]. Urologie 2022; 61:644-652. [PMID: 35286433 DOI: 10.1007/s00120-022-01765-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/13/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND En bloc tumor resection of bladder tumors (ERBT) is a novel alternative procedure to conventional resection of bladder tumor (cTURBT), which might help to address common problems of the standard method, such as inadequate detrusor muscle in specimens, high re-resection rates and high recurrence rates. OBJECTIVE To analyze current data on ERBT in efficacy and safety compared to cTURBT. DATA SOURCES PubMed. STUDY SELECTION Two independent authors identified trials based on keywords and inclusion criteria. A third author was consulted in case of discrepancies. Screening keywords: ERBT, en bloc transurethral resection of bladder tumor, TURBT en bloc. A meta-analysis of 13 studies was performed. The effect size was estimated based on odds ratios and mean differences including their corresponding two-sided 95% confidence intervals. DATA SYNTHESIS The analyzed studies comprised a homogenous collective in terms of tumor size, tumor multiplicity and tumor stage. Operation time did not significantly differ between the methods. Differences were observed in hospitalization and catheterization time in favor of ERBT. Reported complications did not show clear differences. There was significantly more detrusor muscle in the specimens in the ERBT group. No significant differences were found in recurrence up to 2 years of follow-up. CONCLUSION ERBT is a safe alternative to conventional TURBT with promising features regarding effective resection of detrusor muscle. More standardized data on recurrence rates, different resection modalities and resection margin results are needed.
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Affiliation(s)
- D Oswald
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich.
| | - P Pallauf
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | - S Deininger
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | | | - C Netsch
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - B Becker
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - M Fiedler
- Klinik für Urologie, SLK-Kliniken Heilbronn GmbH, Heilbronn, Deutschland
| | - A Haecker
- Klinik für Urologie und Kinderurologie, Gesundheitsverbund Landkreis Konstanz, Klinikum Konstanz, Konstanz, Deutschland
| | - R Homberg
- Klinik für Urologie, Kinderurologie und Uro-Gynäkologie, St. Barbara-Klinik Hamm-Heessen, Hamm, Deutschland
| | - J T Klein
- Urologische Klinik am Lerchenberg, Heilbronn, Deutschland
| | - K Lehrich
- Klinik für Urologie, Vivantes Auguste-Viktoria-Klinikum, Berlin, Deutschland
| | - A Miernik
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Freiburg, Deutschland
| | - P Olbert
- BRIXSANA private clinic, Brixen, Italien
| | - D S Schöb
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Freiburg, Deutschland
| | - K D Sievert
- UKOWL, Campus Klinikum Lippe, Detmold, Deutschland
| | - A J Gross
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - J Westphal
- Klinik für Urologie, Kinderurologie und Urogynäkologie, Krankenhaus Maria Hilf der Alexianer GmbH, Krefeld, Deutschland
| | - L Lusuardi
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
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Oswald D, Pallauf M, Herrmann TRW, Netsch C, Becker B, Lehrich K, Miernik A, Schöb DS, Sievert KD, Gross AJ, Westphal J, Lusuardi L, Deininger S. [Transurethral resection of bladder tumors (TURBT)]. Urologe A 2022; 61:71-82. [PMID: 34982181 PMCID: PMC8763753 DOI: 10.1007/s00120-021-01741-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2021] [Indexed: 10/28/2022]
Abstract
Transurethral resection of bladder tumors (TURBT) is the standard of care for the diagnostics and primary treatment of bladder tumors. These are removed by fragmentation using loop diathermy. The resection area is coagulated for hemostasis. An important aspect is always a complete resection with an adequate amount of detrusor muscle in the specimen. Postoperative intravesical instillation of single-shot chemotherapy has been proven to reduce recurrence rates. Methods for improved tumor visualization (particularly photodynamic diagnostics) are used to enhance tumor detection rates particularly in multifocal tumors or carcinoma in situ (CIS). Thus, recurrence and progression rates can be reduced. Depending on the histological examination of the TURBT specimen, follow-up treatment for non-muscle invasive bladder tumors are adjuvant instillation treatment using chemotherapy or Bacillus Calmette-Guérin (BCG), second look TURBT and early cystectomy or for muscle invasive bladder tumors, radical cystectomy or (oncologically subordinate) trimodal treatment with renewed TURBT, radiotherapy and chemotherapy are indicated. Possible complications of TURBT include bleeding with bladder tamponade, extraperitoneal or intraperitoneal bladder perforation and infections of the urogenital tract.
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Affiliation(s)
- D Oswald
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Universitätsklinik für Urologie und Andrologie der PMU, Salzburger Landeskliniken, Müllner Hauptstraße 48, 5020, Salzburg, Österreich.
| | - M Pallauf
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Universitätsklinik für Urologie und Andrologie der PMU, Salzburger Landeskliniken, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | | | - C Netsch
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - B Becker
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - K Lehrich
- Klinik für Urologie, Vivantes Auguste-Viktoria-Klinikum, Berlin, Deutschland
| | - A Miernik
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Freiburg, Deutschland
| | - D S Schöb
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Freiburg, Deutschland
| | - K D Sievert
- UKOWL, Campus Klinikum Lippe, Detmold, Deutschland
| | - A J Gross
- Abteilung für Urologie, Asklepios Klinik Barmbek, Hamburg, Deutschland
| | - J Westphal
- Klinik für Urologie, Kinderurologie und Urogynäkologie, Krankenhaus Maria Hilf der Alexianer GmbH, Krefeld, Deutschland
| | - L Lusuardi
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Universitätsklinik für Urologie und Andrologie der PMU, Salzburger Landeskliniken, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | - S Deininger
- Universitätsklink für Urologie und Andrologie, Paracelsus Medizinische Universität Salzburg, Universitätsklinik für Urologie und Andrologie der PMU, Salzburger Landeskliniken, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
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Pallauf M, Kunit T, Ramesmayer C, Deininger S, Herrmann TRW, Lusuardi L. Endoscopic enucleation of the prostate (EEP). The same but different-a systematic review. World J Urol 2021; 39:2383-2396. [PMID: 33956196 PMCID: PMC8332586 DOI: 10.1007/s00345-021-03705-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 04/17/2021] [Indexed: 12/20/2022] Open
Abstract
Purpose Various techniques for EEP exist. They differ by surgical steps and the source of energy. It is assumed that the latter is of minor importance, whereas adherence to the anatomical enucleation template determines the postoperative result. So far, no systematic review highlights the differences between the energy sources in use for anatomical EEP. This study will address selfsame topic. Methods A systematic review of the literature was completed on September 1st, 2020. Studies comparing HoLEP, ThuLEP, DiLEP, or BipolEP with TUR-P providing 12 months of postoperative follow-up were included. Two frequentist network meta-analyses were created to compare the techniques of EEP indirectly. Results 31 studies, including 4466 patients, were found eligible for our meta-analysis. Indirect pairwise comparison showed differences in surgery time between BipolEP and HolEP (MD − 16.72 min., 95% CI − 27.75 to − 5.69) and DiLEP and HoLEP (MD − 22.41 min., 95% CI − 39.43 to − 5.39). No differences in the amount of resected prostatic tissue, major and minor complications and postoperative catheterization time were found. The odds for blood transfusions were threefold higher for BipolEP than for HoLEP (OR 3.27, 95% CI 1.02–10.5). The difference was not statistically significant when comparing prospective trials and matched-pair analysis only (OR 3.25, 95% CI 0.94–11.18). The Qmax 12 months after surgery was 2 ml/sec. higher for BipolEP than for DiLEP (MD 2.00, 95% CI 0.17–3.84) and 1.94 ml/sec. lower for DiLEP than for HoLEP (MD − 1.94, 95% CI − 3.65 to − 0.22). Conclusion The energy source used for EEP has an impact on the intervention itself. BipolEP promotes surgical efficiency; laser techniques lower the risk of bleeding. Registry This meta-analysis is registered in the PROSPERO international prospective register registry with the registration number CRD42020205836.
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Affiliation(s)
- M Pallauf
- Department of Urology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria.
| | - T Kunit
- Department of Urology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - C Ramesmayer
- Department of Urology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - S Deininger
- Department of Urology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - T R W Herrmann
- Department of Urology, Spital Thurgau AG, Frauenfeld, Switzerland
| | - L Lusuardi
- Department of Urology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
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Miernik A, Gross AJ, Schoeb DS, Sievert KD, Rassweiler JJ, Netsch C, Häcker A, Leyh H, Olbert PJ, Klein JT, Homberg R, Westphal PJ, Herrmann TRW. [Endoscopic enucleation of the prostate]. Urologe A 2019; 58:437-450. [PMID: 30923856 DOI: 10.1007/s00120-019-0910-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The spectrum of surgical procedures for the minimally invasive treatment of benign prostatic hyperplasia (BPH) has significantly increased over the last two decades. The simple suprapubic prostatectomy (subtotal prostatectomy, SP) has largely lost relevance in current practice. On the other hand, transurethral resection of the prostate (TURP) has been further standardized and potentially made safer by the introduction of the bipolar technique and low-pressure systems.Transurethral (endoscopic) enucleation techniques (endoscopic enucleation of the prostate, EEP) are increasingly competing with the current gold standard TURP and are replacing SP for treatment of larger adenomas. This approach is especially related to the rapid development of laser technology, which has sustainably changed the face of modern BPH treatment in a similar way to stone therapy. This has been incorporated in the clinical patient management, clinical studies and standardization of numerous surgical techniques that are systematically described in this article. Additionally, efforts have also been made to use other energy sources, such as bipolar current in EEP. With respect to scientific objectivity, high-quality clinical trials are regularly published which further strengthen the position of EEP.
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Affiliation(s)
- A Miernik
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Hugstetterstraße 55, 79106, Freiburg, Deutschland.
| | - A J Gross
- Abteilung für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22291, Hamburg, Deutschland
| | - D S Schoeb
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Hugstetterstraße 55, 79106, Freiburg, Deutschland
| | - K D Sievert
- Klinik für Urologie, Klinikum Lippe, Röntgenstraße 18, 32756, Detmold, Deutschland
| | - J J Rassweiler
- Klinik für Urologie, SLK-Kliniken Heilbronn GmbH, Am Gesundbrunnen 20-26, 74078, Heilbronn, Deutschland
| | - C Netsch
- Abteilung für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22291, Hamburg, Deutschland
| | - A Häcker
- Klinik für Urologie, Kinderurologie und urologische Onkologie, Marienhaus Klinikum Hetzelstift, Stiftstraße 10, 67434, Neustadt an der Weinstraße, Deutschland
| | - H Leyh
- Klinik für Urologie, Klinikum Garmisch-Partenkirchen, Auenstraße 6, 82467, Garmisch-Partenkirchen, Deutschland
| | - P J Olbert
- BRIXSANA private clinic, Julius-Durst-Straße 28, 39042, Brixen, Italien
| | - J-T Klein
- Klinik für Urologie und Kinderurologie, Universitätsklinikum Ulm, Prittwitzstraße 43, 89075, Ulm, Deutschland
| | - R Homberg
- Klinik für Urologie, Kinderurologie und Uro-Gynäkologie, St. Barbara-Klinik Hamm-Heessen, Am Heessener Wald 1, 59073, Hamm, Deutschland
| | - P J Westphal
- Klinik für Urologie und Kinderurologie, Krankenhaus Maria Hilf der Alexianer GmbH, Dießemer Bruch 81, 47805, Krefeld, Deutschland
| | - T R W Herrmann
- Kantonsspital Frauenfeld, Klinik für Urologie, Spital Thurgau AG, Pfaffenholzstrasse 4/Postfach, 8501, Frauenfeld, Schweiz
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Olbert PJ, Netsch C, Schoeb DS, Leyh H, Gross AJ, Miernik A, Rassweiler JJ, Westphal J, Häcker A, Homberg R, Klein J, Sievert KD, Herrmann TRW. Urologische Infektionen und Antibiotikamanagement bei geriatrischen Patienten. Urologe A 2019; 58:809-820. [DOI: 10.1007/s00120-019-0974-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Rieken M, Herrmann TRW, Füllhase C. Operative Therapie des benignen Prostatasyndroms – resezieren, vaporisieren oder enukleieren? Urologe A 2019; 58:263-270. [DOI: 10.1007/s00120-019-0891-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Becker B, Herrmann TRW, Gross AJ, Netsch C. Thulium vapoenucleation of the prostate versus holmium laser enucleation of the prostate for the treatment of large volume prostates: preliminary 6-month safety and efficacy results of a prospective randomized trial. World J Urol 2018; 36:1663-1671. [DOI: 10.1007/s00345-018-2321-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 04/30/2018] [Indexed: 10/17/2022] Open
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Miernik A, Sievert KD, Herrmann TRW, Netsch C, Rassweiler JJ, Leyh H, Westphal J, Bachmann A, Häcker A, Homberg R, Klein JT, Olbert PJ, Schoeb DS, Gross AJ. [Surgical positioning techniques in urology : Tips and tricks]. Urologe A 2017; 56:1193-1206. [PMID: 28762032 DOI: 10.1007/s00120-017-0467-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Correct positioning of patients during preoperative preparations is essential for success of the intervention to avoid any positioning trauma and to provide the best access to the targeted structures. The appropriate positioning (and optimal performance) means that complications are avoided and also makes an essential contribution to the smooth course of the surgical intervention. A correct position is essential particularly in urology because the organs assigned to the discipline of urology are anatomically mostly difficult to reach. A further important function of the correct positioning technique is the avoidance of injuries to the patient. This article summarizes the most common positioning techniques in urological interventions with special emphasis on the explanation of practical advice, helpful tips and possible complications that can enable even junior surgeons to correctly perform the appropriate positioning technique.
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Affiliation(s)
- A Miernik
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Hugstetterstr. 55, 79106, Freiburg, Deutschland.
| | - K-D Sievert
- Urologische Klinik und Poliklinik, Universitätsmedizin Rostock, Ernst-Heydemann-Str. 6, 18057, Rostock, Deutschland
| | - T R W Herrmann
- Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Deutschland
| | - C Netsch
- Abteilung für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22291, Hamburg, Deutschland
| | - J J Rassweiler
- Klinik für Urologie, SLK-Kliniken Heilbronn GmbH, Am Gesundbrunnen 20-26, 74078, Heilbronn, Deutschland
| | - H Leyh
- Klinik für Urologie, Klinikum Garmisch-Partenkirchen, Auenstr. 6, 82467, Garmisch-Partenkirchen, Deutschland
| | - J Westphal
- Klinik für Urologie und Kinderurologie, Krankenhaus Maria Hilf der Alexianer GmbH, Dießemer Bruch 81, 47805, Krefeld, Deutschland
| | - A Bachmann
- alta uro AG, Centralbahnpl. 6, 4051, Basel, Schweiz
| | - A Häcker
- Klinik für Urologie, Haus 28, Universitätsklinikum Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland
| | - R Homberg
- Klinik für Urologie, Kinderurologie und Uro-Gynäkologie, St. Barbara-Klinik Hamm-Heessen, Am Heessener Wald 1, 59073, Hamm, Deutschland
| | - J-T Klein
- Klinik für Urologie und Kinderurologie, Universitätsklinikum Ulm, Prittwitzstr.43, 89075, Ulm, Deutschland
| | - P J Olbert
- BRIXSANA private clinic, Julius-Durst-Str. 28, 39042, Brixen, Italien
| | - D S Schoeb
- Medizinische Fakultät, Klinik für Urologie, Universitätsklinikum Freiburg, Hugstetterstr. 55, 79106, Freiburg, Deutschland
| | - A J Gross
- Abteilung für Urologie, Asklepios Klinik Barmbek, Rübenkamp 220, 22291, Hamburg, Deutschland
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Netsch C, Becker B, Tiburtius C, Moritz C, Becci AV, Herrmann TRW, Gross AJ. A prospective, randomized trial comparing thulium vapoenucleation with holmium laser enucleation of the prostate for the treatment of symptomatic benign prostatic obstruction: perioperative safety and efficacy. World J Urol 2017; 35:1913-1921. [PMID: 28698991 DOI: 10.1007/s00345-017-2071-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 07/07/2017] [Indexed: 10/19/2022] Open
Abstract
INTRODUCTION AND OBJECTIVES To compare the perioperative outcomes of thulium vapoenucleation of the prostate (ThuVEP) with holmium laser enucleation of the prostate (HoLEP) for patients with symptomatic benign prostatic obstruction (BPO). METHODS Forty-eight and 46 patients were prospectively randomized to ThuVEP and HoLEP. All patients were assessed preoperatively and 4-week postoperatively. The complications were noted and classified according to the modified Clavien classification system. Patient data were expressed as median (interquartile range) or numbers (%). RESULTS Median age at surgery was 73 (67-76) years and median prostate volume was 80 (46.75-100) cc and not different between the groups (p = 0.207). The median operative time was 60 (41-79) minutes without significant differences between both groups (p = 0.275). There were no significant differences between the groups regarding catheterization time [2 (2-2) days, p = 0.966] and postoperative stay [2 (2-3) days, p = 0.80]). Clavien 1 (13.8%), Clavien 2 (3.2%), Clavien 3a (2.1%), and Clavien 3b (4.3%) complications occurred without significant differences between the groups. However, the occurrence of acute postoperative urinary retention was higher after HoLEP compared to ThuVEP (15.2 vs. 2.1%, p ≤ 0.022). At 1-month follow-up, peak urinary flow rates (10.7 vs. 22 ml/s), post-void residual volumes (100 vs. 20 ml), International Prostate Symptom Score (20 vs. 10) and Quality of Life (4 vs. 3) had improved significantly (p ≤ 0.005) without significant differences between the groups. CONCLUSIONS ThuVEP and HoLEP are safe and effective procedures for the treatment of symptomatic BPO. Both procedures give equivalent and satisfactory immediate micturition improvement with low perioperative morbidity.
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Affiliation(s)
- Christopher Netsch
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany.
| | - B Becker
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany
| | - C Tiburtius
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany
| | - C Moritz
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany
| | - A Venneri Becci
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany
| | - T R W Herrmann
- Department of Urology, MHH Medical School of Hannover, Hannover, Germany
| | - A J Gross
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany
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Netsch C, Bach T, Herrmann TRW, Gross AJ. Update on the current evidence for Tm:YAG vapoenucleation of the prostate 2014. World J Urol 2014; 33:517-24. [PMID: 25300823 DOI: 10.1007/s00345-014-1417-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 09/30/2014] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION To evaluate the current role of thulium vapoenucleation of the prostate (ThuVEP) for the treatment of benign prostatic obstruction (BPO). METHODS A Medline search for randomized trials, case series, and comparative studies being published since the initial description of the ThuVEP procedure (2009-2014) was performed to assess the safety, the perioperative morbidity, the efficacy, and the durability of the technique. RESULTS A total of 14 peer-reviewed original articles, seven case series [level of evidence (LOE) 4] and seven comparative studies (LOE 3b), have been identified. ThuVEP has been shown to be a size-independent, safe, efficacious, and durable procedure for the treatment of BPO in large, prospective, and retrospective series (LOE 4/3b). The feasibility and safety of the ThuVEP procedure has also been confirmed in patients at high cardiopulmonary risk on oral anticoagulants (LOE 4). It has also been demonstrated that the erectile function is not impaired by the ThuVEP procedure (LOE 4). However, published ThuVEP series are from very few centers of excellence not exceeding a LOE of 3b. Randomized controlled trials comparing ThuVEP with standard procedures for the treatment of BPO, namely transurethral resection of the prostate, open prostatectomy, or holmium laser enucleation of the prostate, have not been published so far. CONCLUSIONS ThuVEP appears to be a size-independent, safe, efficacious, and durable procedure for the treatment of BPO (LOE 4/3b). Multicentric PRT are however needed to define the current role of ThuVEP in the armamentarium of minimally invasive transurethral surgery of the prostate.
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Affiliation(s)
- C Netsch
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany,
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Herrmann TRW, Liatsikos EN, Nagele U, Traxer O, Merseburger AS. [European Association of Urology guidelines on laser technologies]. Actas Urol Esp 2013; 37:63-78. [PMID: 22989380 DOI: 10.1016/j.acuro.2012.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 05/22/2012] [Indexed: 12/14/2022]
Abstract
CONTEXT The European Association of Urology (EAU) Guidelines Office has set up a guideline working panel to analyse the scientific evidence published in the world literature on lasers in urologic practice. OBJECTIVE Review the physical background and physiologic and technical aspects of the use of lasers in urology, as well as current clinical results from these new and evolving technologies, together with recommendations for the application of lasers in urology. The primary objective of this structured presentation of the current evidence base in this area is to assist clinicians in making informed choices regarding the use of lasers in their practice. EVIDENCE ACQUISITION Structured literature searches using an expert consultant were designed for each section of this document. Searches were carried out in the Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials, and Medline and Embase on the Dialog/DataStar platform. The controlled terminology of the respective databases was used, and both Medical Subject Headings and EMTREE were analysed for relevant entry terms. One Cochrane review was identified. EVIDENCE SYNTHESIS Depending on the date of publication, the evidence for different laser treatments is heterogeneous. The available evidence allows treatments to be classified as safe alternatives for the treatment of bladder outlet obstruction in different clinical scenarios, such as refractory urinary retention, anticoagulation, and antiplatelet medication. Laser treatment for bladder cancer should only be used in a clinical trial setting or for patients who are not suitable for conventional treatment due to comorbidities or other complications. For the treatment of urinary stones and retrograde endoureterotomy, lasers provide a standard tool to augment the endourologic procedure. CONCLUSIONS In benign prostatic obstruction (BPO), laser vaporisation, resection, or enucleation are alternative treatment options. The standard treatment for BPO remains transurethral resection of the prostate for small to moderate size prostates and open prostatectomy for large prostates. Laser energy is an optimal treatment method for disintegrating urinary stones. The use of lasers to treat bladder tumours and in laparoscopy remains investigational.
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Affiliation(s)
- T R W Herrmann
- Departamento de Urología y Uro-oncología, Medical School of Hanover (MHH), Hanover, Alemania.
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Netsch C, Bach T, Herrmann TRW, Neubauer O, Gross AJ. Evaluation of the learning curve for Thulium VapoEnucleation of the prostate (ThuVEP) using a mentor-based approach. World J Urol 2012; 31:1231-8. [PMID: 22733237 DOI: 10.1007/s00345-012-0894-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 06/08/2012] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION To evaluate the learning curve of Thulium:YAG VapoEnucleation of the prostate (ThuVEP) for patients with symptomatic benign prostatic obstruction (BPO) prospectively. METHODS ThuVEP was performed using the 120 Watt 2 μm continuous wave Thulium:YAG laser. ThuVEP was done by a resident without experience in transurethral prostate surgery (A, n = 32), an experienced endourologist (B, n = 32), and an experienced surgeon in ThuVEP (C, n = 32), who served as the mentor for A/B. Patients were divided into consecutive subgroups of 8 patients to assess the impact of the learning curve on procedure outcome. Patient demographic, perioperative, and 12-month follow-up data were analysed. RESULTS ThuVEP was successfully completed in all patients. Enucleation efficiency (g/min) differed significantly between surgeon A (0.48 ± 0.3), B (0.7 ± 0.36), and C (1.4 ± 0.67) (p ≤ 0.001). Enucleation efficiency correlated significantly with the weight of resected tissue in surgeon A (r = 0.88), B (r = 0.73), and C (r = 0.79) (p < 0.001). ThuVEP was performed by surgeon A and B with reasonable enucleation, morcellation, and overall operation efficiency after 8-16 procedures. At 12-month follow-up, 68 (71 %) patients were available for review. IPSS, QoL, Qmax, PVR, PSA, and prostate volume improved significantly at follow-up (p ≤ 0.023). Mean PSA/prostate volume reduction was 81.95/74.5, 80.7/79.4, and 87.6/75.9 % in surgeon A, B, and C, respectively. Urethral stricture and bladder neck contracture developed 2 (A = 1, B = 1; 2.1 %) patients and 1 (C, 1 %) patient each, respectively. CONCLUSIONS ThuVEP can be performed with reasonable efficiency even during the initial learning course of the surgeon when closely mentored. Previous experience in the field of endourology is beneficial.
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Affiliation(s)
- C Netsch
- Department of Urology, Asklepios Hospital Barmbek, Rübenkamp 220, 22291, Hamburg, Germany,
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Kramer MW, Wolters M, Abdelkawi IF, Merseburger AS, Nagele U, Gross A, Bach T, Kuczyk MA, Herrmann TRW. [Transurethral en bloc resection of non-muscle invasive bladder cancer. What is the state of the art?]. Urologe A 2012; 51:798-804. [PMID: 22622487 DOI: 10.1007/s00120-012-2876-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Bladder cancer of the urothelium is the second most common malignancy among urological tumors. In view of a worldwide aging population and the fact that increased incidence rates are associated with higher age, new socioeconomic challenges will appear. Even nowadays the treatment of bladder cancer bears the highest lifetime treatment costs per patient among all forms of cancer. In conjunction with higher comorbidity rates among older patients urologists are facing new challenges in the treatment and care of patients with bladder cancer. The standard treatment for non-muscle invasive bladder cancer (NMIBC) is monopolar transurethral resection using resection loops (TURB). Based on experience in the surgical treatment of benign prostatic hyperplasia, different concepts of en bloc resection of bladder tumors using alternative energy resources (e.g. holmium laser, thulium laser and the water-jet HybridKnife) have been developed. Goals of new treatment modalities are reduction of perioperative and postoperative comorbidities, better pathological work-up of the specimens and increased recurrence-free survival. Postulated advantages using laser devices are a more precise cutting line as well as better hemostasis. The evidential value of this review is limited due to the lack of randomized, prospective studies. However, there is a tendency towards a limitation of perioperative and postoperative morbidities as well as higher chance of well-preserved tissues for better pathohistological evaluation using en bloc resection methods. More studies with long-term follow-up periods and better randomization are needed to clarify whether en bloc strategies provide better long-term oncological survival.
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Affiliation(s)
- M W Kramer
- Klinik für Urologie und Urologische Onkologie, Medizinische Hochschule Hannover, Hannover
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Bach T, Xia SJ, Yang Y, Mattioli S, Watson GM, Gross AJ, Herrmann TRW. Thulium: YAG 2 mum cw laser prostatectomy: where do we stand? World J Urol 2010; 28:163-8. [PMID: 20204378 DOI: 10.1007/s00345-010-0522-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2010] [Accepted: 02/13/2010] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Tm:YAG 2 mum cw laser prostatectomy was introduced in the treatment of benign ptostatic obstruction (BPO). Since then numerous studies have been published proving efficacy during follow-up. However, different surgical techniques were introduced with different names for similar techniques that complicate comparison. This reviews aim was to compare published data and break down surgical techniques to core points. The authors define validate appellations for different surgical techniques and propose further use of these names to ensure homogenous nomenclature. MATERIALS AND METHODS All publications on Thulium:YAG prostatectomy have been included in this review. Articles were reviewed and associated due to the nature of the surgical approach. A systematic review of published data was performed. RESULTS Sixteen peer-reviewed publications dealing with Tm:YAG laser prostatectomy were printed since 2005. Four different surgical principles are described, including vaporization, resection and enucleation. Follow-up, up to 24 months, showed durable functional results. CONCLUSION Efficacy of Tm:YAG prostatectomy was shown. Surgical techniques include "Tm:YAG Vaporization of the prostate (ThuVAP)", "Tm:YAG VapoResection of the prostate (ThuVaRP)" and "Tm:YAG VapoEnucleation of the prostate (ThuVEP)". The almost blunt enucleation is introduced as "Tm:YAG laser enucleation of the prostate (ThuLEP)". The authors recommend the use of this neologism in the future. Further, large-scale prospective studies are needed to prove long-term durability. To initiate and canalize these upcoming studies, the Urothulium Study Group was founded, combining international experts on Thulium:YAG laser prostatectomy under its roof.
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Affiliation(s)
- T Bach
- Department of Urology, Asklepios Hospital Barmbek, Ruebenkamp 220, 22291, Hamburg, Germany.
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Bach T, Herrmann TRW, Cellarius C, Geavlete B, Gross AJ, Jecu M. Bipolar resection of the bladder and prostate--initial experience with a newly developed regular sized loop resectoscope. J Med Life 2009; 2:443-6. [PMID: 20108760 PMCID: PMC3019012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Bipolar transurethral resection (TUR) has been introduced in the clinical practice nowadays. Benefits from bipolar TUR are represented by the use of saline irrigation, which avoids hypoosmotic hyperhydration (TUR-Syndrome), as well as by the reduced risk of obturator nerve stimulation. However, the previously introduced smaller bipolar resection loop caused prolonged operating-time. We report our initial experience with a newly developed regular sized loop for a bipolar resectoscope. MATERIALS AND METHODS Different loop calibers and configurations were tested and compared to a previously introduced bipolar system and conventional resection devices in TUR of benign prostate hyperplasia (BPH) and bladder tumors (TURP and TURBT). The resected tissue was pathologically examined for thermal damage and compared to a control group of monopolar conventionally resected tissue. RESULTS The handling of the resectoscope was comparable to that of the conventional ones. Cutting control, cutting speed and coagulation effectiveness were excellent, and no obturator nerve stimulation occurred. The resection area could easily be assessed and tissue examination showed no differences in terms of quality and quantity of thermal damages, since tissue carbonization was reduced. There was no sticking of the resected tissue on the loop. CONCLUSION Regular sized loop bipolar resection is safe and efficient. Coagulation and cutting extent control seem superior to conventional TUR. Due to reduced carbonization, the resection ground can be easily assessed. The risk of obturator nerve stimulation is reduced. The histological quality of the tissue is not impaired. This device combines the advantage of a regular size resection loop with bipolar resection in normal saline. It has the potential to become a valuable alternative to monopolar TUR.
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Affiliation(s)
- T Bach
- Asklepios
Hospital Barmbek, Department of Urology, HamburgGermany
| | - TRW Herrmann
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Hannover Medical School, Department of Urology, Hannover
Germany
| | - C Cellarius
- Asklepios
Hospital Barmbek, Department of Urology, HamburgGermany
| | - B Geavlete
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‘Sf. Ioan’ Clinical Emergency Hospital, Department
of Urology, BucharestRomania
| | - AJ Gross
- Asklepios
Hospital Barmbek, Department of Urology, HamburgGermany
| | - M Jecu
-
‘Sf. Ioan’ Clinical Emergency Hospital, Department
of Urology, BucharestRomania
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Herrmann TRW, Georgiou A, Bach T, Gross AJ, Oelke M. Laser treatments of the prostate vs TURP/ open prostatectomy: systematic review of urodynamic data. MINERVA UROL NEFROL 2009; 61:309-324. [PMID: 19773731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
UNLABELLED Bladder outlet obstruction (BOO) is believed to be the major component of benign prostatic hyperplasia (BPH) that harms the urinary tract. Therefore, BOO relief is the primary treatment objective in patients with obstructive BPH. This systematic review aims to analyze urodynamic data of laser treatment modalities of the prostate in direct comparison with standard treatment (TURP or open prostatectomy). We systematically searched the literature for randomized-controlled trials (RCTs) of prostate laser treatments in which urodynamic results were compared to TURP or open prostatectomy. The literature search included articles that were published between January 1995 and January 2009. Thirty five RCTs were identified encompassing in total 3669 patients. Of all available laser treatments, only one RCT used pressure-flow data to compare the laser treatment of the prostate (holmium laser enucleation, HoLEP) with standard treatment. Improvement of maximum urinary flow rate (Q(max)) of free uroflowmetry was similar for contact laser ablation (CLAP) with Nd:YAG, interstitial laser coagulation with Nd:YAG, potassium potassium-titanyl-phosphate (KTP)/Nd: YAG hybrid treatment, and HoLEP. Qmax improvement was also similar for holmium laser ablation (HoLAP) with 60-80 Watts, holmium laser resection, and thulium laser resection but limited to only one study each. The laser hybrid therapy with CLAP/visual laser ablation of the prostate (VLAP)/Nd:YAG was inferior to TURP. VLAP and KTP showed inhomogeneous RESULTS Most contemporary laser treatments modalities provide similar Qmax improvement compared to standard treatment. However, precise differences can only be determined by comparative computer urodynamic investigations. Therefore, new laser techniques (such as thulium laser vapoenucleation of the prostate) should be investigated by urodynamic studies in the future.
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Affiliation(s)
- T R W Herrmann
- Department of Urology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
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Bach T, Geavlete B, Herrmann TRW, Gross AJ. Working tools in flexible ureterorenoscopy--influence on flow and deflection: what does matter? J Endourol 2008; 22:1639-43. [PMID: 18620506 DOI: 10.1089/end.2008.0184] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Flexible renoscopes offer access to almost all points within the collecting system. For stone workup, excellent visualization is mandatory. Therefore, irrigation flow is of critical importance. The aim of this study was to evaluate the effect of tools and probes on deflection angle and irrigation flow volume in the latest generation of flexible renoscopes. METHODS Five flexible renoscopes [Wolf (Viper), Storz (FlexX(2)), ACMI (DUR-8 Elite, DUR-D), Olympus (URF-P5)] were tested. Deflection angle, lowest diameter of the bent tip, and flow rates were measured. Recorded parameters were deflection angle and flow rate of the empty and loaded scopes. A laser probe (273 mum), biopsy forceps (2.4-3.0 French), and tipless nitinol baskets (1.5-2.4 French) were tested. RESULTS Deflection has no influence on flow rate. The size of the basket has no influence on the maximum angle of deflection. Introducing the laser fiber or the biopsy forceps leads to relevant loss of deflection (laser fiber: 4.44%-10.21%; biopsy forceps: 30.7%-57.8%). The inner diameter of the bent tip increases with introduction of a laser fiber (+1 to 3 mm) or the biopsy forceps (+13 to 34 mm). Flow rates are dependent on the size of the tool used. Loss of irrigation volume varies from 62.24% (1.5 French) to 99.1% (3.0 French). The use of a laser fiber leads to a decrease in irrigation volume of 53.7%. CONCLUSION Irrigation flow, loss of deflection, and intraoperative visualization are dependent on the working tool used. The provided data, in awareness of the patient's anatomy, help to select scopes, probes, and tools correctly for successful ureterorenoscopy.
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Affiliation(s)
- T Bach
- Asklepios Hospital Barmbek, Department of Urology, Hamburg, Germany.
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Herrmann TRW, Bach T, Imkamp F, Tezval H, Klot C, Jonas U, Gross AJ, Burchardt M. FlexGuard: a new laser insertion sheath: functional aspects in ureterorenoscopy (URS). World J Urol 2007; 25:269-73. [PMID: 17549493 DOI: 10.1007/s00345-007-0176-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Accepted: 04/20/2007] [Indexed: 11/26/2022] Open
Abstract
The evolution of flexible ureteroscopes led to a widespread use for the management of upper urinary tract abnormalities. The cost of purchase, maintenance and the durability of these instruments has become a major issue. This work describes a new device to avoid damages due to incorrect use of the Holmium laser during insertion of the laser fibre. A laser fibre with an optical core of 271 and 430 muicrom outside diameter was slid inside the FlexGuard laser fibre insertion sheath (LISA laser products, Germany). The outside diameter of the sheath measures 2.7 F (0.9 mm) and 2.1 F (0.7 mm) luminal diameter. The distal fibre tip was brought up to a position app. 2 mm inside the distal end of the sheath. The loaded sheath was pushed through the working channel of various ureteroscopes which were in maximum deflection. With the insertion sheath protruding about 2 mm from the distal tip of the URS the fibre was effortless forwarded out of the sheath to approach the stone. Once the laser fibre was in position, the sheath was removed, to increase the volume of irrigation fluid during laser lithotripsy. The radius of curvature (ROC) of the URS in maximum deflection and the integrity of the working channel was investigated. Using the insertion sheath the laser fibre reached the working position without any recognition of scratching or resistance. The integrity of the ureterorenoscopes was checked thoroughly be manually operated manometry. No damage of the inner surface of the working channel occurred. The ROC of the instrument did not change significantly during this procedure. After removal of the sheath the ROC remained stable. With the extended use of ureteroscopy, durability and repair costs are of concern. Damage resulting from incorrect use of laser fibres is a major issue in this respect. FlexGuard proved to avoid this damage in all flexible ureteroscopes investigated without limiting their mobility.
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Affiliation(s)
- T R W Herrmann
- Klinik für Urologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany.
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Affiliation(s)
- U Jonas
- Medizinische Hochschule, Carl-Neuberg-Strasse 1, 30625 Hannover.
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Herrmann TRW, Gross AJ, Schultheiss D, Kaufmann PM, Jonas U, Burchardt M. Transurethral microwave thermotherapy for the treatment of BPH: still a challenger? World J Urol 2006; 24:389-96. [PMID: 16752156 DOI: 10.1007/s00345-006-0098-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2006] [Accepted: 04/19/2006] [Indexed: 11/28/2022] Open
Abstract
Minimally invasive therapies for treatment of benign prostatic hyperplasia (BPH) compete with the gold standard transurethral resection of the prostate (TURP). Comparisons of efficacy and safety have broadened the knowledge of different treatment modalities. Concerns of quality of life such as unaltered sexual function as well as cost considerations drive the market to develop techniques of lower level invasiveness. Among the competitors the office based transurethral microwave thermotherapy (TUMT) provides the broadest scale of scientific data. Numerous manufacturers sell various modifications of this technology. According to different clinical studies TUMT proved to be an effective, safe, and durable therapy for the treatment of lower urinary tract symptoms (LUTS) secondary to BPH. However, TURP still holds the steadier long-term results and is more effective to reduce obstruction as well as other LUTS.
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Affiliation(s)
- T R W Herrmann
- Department of Urology and Pediatric Urology, Medical School of Hannover (MHH), Carl Neuberg Street 1, 30625, Hannover, Germany.
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