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  • 1
    In: Die Chirurgie, Springer Science and Business Media LLC, Vol. 93, No. 8 ( 2022-08), p. 765-777
    Abstract: Robotic procedures are gaining more and more importance in visceral surgery and seem to develop into an indispensable tool in minimally invasive visceral surgery. In 2020 the COVID-19 pandemic caused unexpected changes in daily surgical routines with still ongoing challenges. We evaluated the impact of the COVID-19 pandemic on robotic visceral procedures and the associated training provided in Germany. Material and methods We performed a thorough evaluation of German hospitals and identified 89 surgical departments performing robotic visceral procedures. After extensive topic-related literature search an online questionnaire was developed. It included 35 questions referring to all relevant topics on robotic surgery, such as training programs and influence of the COVID-19 pandemic. The survey was sent via email three times to each department. Descriptive and subgroup analysis were performed. Results We reported a response to our questionnaire from 22 (24.7%) surgical departments and17 questionnaires were analyzable. The vast majority of them weresurgical departments of university hospitals (58.8%), 17.6% maximum care clinics and 23.5% main care clinics. Robotic procedures were performed for the upper gastrointestinal tract (UGI 88.2%), the hepatopancreaticobiliary system (HPB 82.4%), in the colorectal region (94.1%) and for hernias (35.3%). The relative proportion of robotic operations in comparison to all visceral procedures was between 0.3% and 15.4%. The average conversion rate was 4.6 ± 3.2% referring to 2020. All participating clinics used the robotic DaVinci® system (Intuitive Surgical Inc., CA, USA). In summary 22 robotic systems were used mainly in an interdisciplinary setting (82.4%). For teaching purposes, 7 departments (41.2%) provided a second robotic console. On average 13.2 ± 6.5% of surgeons per clinic were involved in robotic procedures. Defined operating room (OR) teams (82.4%) consisted of consultants, specialists and residents. Team training for surgeons and OR nurses was mainly (52.9%) based on clinic-specific programs. Due to the COVID-19 pandemic the number of robotic procedures decreased in 70.0% of the participating departments compared to 2019 with the highest decline reported during the second quarter of 2020 (64.7%). Referring to this, staff shortage of non-surgical disciplines (anesthesiologists 35.3%, OR nurses 35.3%, intensive care medics 17.6%), COVID-19-specific regulations (58.8%) and limited capacities of intensive and intermediate care (47.1%) were specified as underlying causes. Due to the COVID-19 pandemic, caused by a decline in numbers of robotic procedures, robotic training was paused completely in assistance at the operating table in 23.5% and at the second console in 42.9%. Conclusion Robotic visceral surgery is already implemented with a broad spectrum of operations in many German clinics of different care levels; however, the relative proportion of robotic procedures is low, when compared to the overall caseload of each clinic. Training concepts are heterogeneous and focused on experts. In surgeons with growing experience in robotic surgery, conversion rates are recorded to be very low. There was a negative impact on robotic case numbers and training provided in 2020 caused by the COVID-19 pandemic. Therefore, a further endorsement of robotic training programs and an improvement of training designs seem to be essential tools in order to enforce robotic procedures in visceral surgery.
    Type of Medium: Online Resource
    ISSN: 2731-6971 , 2731-698X
    Language: German
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 3120893-9
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  • 2
    In: Journal of Clinical Medicine, MDPI AG, Vol. 10, No. 22 ( 2021-11-12), p. 5265-
    Abstract: Background: The implementation of robotics in liver surgery offers several advantages compared to conventional open and laparoscopic techniques. One major advantage is the enhanced degree of freedom at the tip of the robotic tools compared to laparoscopic instruments. This enables excellent vessel control during inflow and outflow dissection of the liver. Parenchymal transection remains the most challenging part during robotic liver resection because currently available robotic instruments for parenchymal transection have several limitations and there is no standardized technique as of yet. We established a new strategy and share our experience. Methods: We present a novel technique for the transection of liver parenchyma during robotic surgery, using three devices (3D) simultaneously: monopolar scissors and bipolar Maryland forceps of the robot and laparoscopic-guided waterjet. We collected the perioperative data of twenty-eight patients who underwent this procedure for minor and major liver resections between February 2019 and December 2020 from the Magdeburg Registry of minimally invasive liver surgery (MD-MILS). Results: Twenty-eight patients underwent robotic-assisted 3D parenchyma dissection within the investigation period. Twelve cases of major and sixteen cases of minor hepatectomy for malignant and non-malignant cases were performed. Operative time for major liver resections (≥ 3 liver segments) was 381.7 (SD 80.6) min vs. 252.0 (70.4) min for minor resections (p 〈 0.01). Intraoperative measured blood loss was 495.8 (SD 508.8) ml for major and 256.3 (170.2) ml for minor liver resections (p = 0.090). The mean postoperative stay was 13.3 (SD 11.1) days for all cases. Liver surgery-related morbidity was 10.7%, no mortalities occurred. We achieved an R0 resection in all malignant cases. Conclusions: The 3D technique for parenchyma dissection in robotic liver surgery is a safe and feasible procedure. This novel method offers an advanced locally controlled preparation of intrahepatic vessels and bile ducts. The combination of precise extrahepatic vessel handling with the 3D technique of parenchyma dissection is a fundamental step forward to the standardization of robotic liver surgery for teaching purposing and the wider adoption of robotic hepatectomy into routine patient care.
    Type of Medium: Online Resource
    ISSN: 2077-0383
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2662592-1
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  • 3
    Online Resource
    Online Resource
    MDPI AG ; 2022
    In:  Journal of Clinical Medicine Vol. 11, No. 11 ( 2022-05-27), p. 3018-
    In: Journal of Clinical Medicine, MDPI AG, Vol. 11, No. 11 ( 2022-05-27), p. 3018-
    Abstract: Background: Liver failure is a crucial predictor for relevant morbidity and mortality after hepatic surgery. Hence, a good patient selection is mandatory. We use the LiMAx test for patient selection for major or minor liver resections in robotic and laparoscopic liver surgery and share our experience here. Patients and methods: We identified patients in the Magdeburg registry of minimally invasive liver surgery (MD-MILS) who underwent robotic or laparoscopic minor or major liver surgery and received a LiMAx test for preoperative evaluation of the liver function. This cohort was divided in two groups: patients with normal (LiMAx normal) and decreased (LiMAx decreased) liver function measured by the LiMAx test. Results: Forty patients were selected from the MD-MILS regarding the selection criteria (LiMAx normal, n = 22 and LiMAx decreased, n = 18). Significantly more major liver resections were performed in the LiMAx normal vs. the LiMAx decreased group (13 vs. 2; p = 0.003). Hence, the mean operation time was significantly longer in the LiMAx normal vs. the LiMAx decreased group (356.6 vs. 228.1 min; p = 0.003) and the intraoperative blood transfusion significantly higher in the LiMAx normal vs. the LiMAx decreased group (8 vs. 1; p = 0.027). There was no significant difference between the LiMAx groups regarding the length of hospital stay, intraoperative blood loss, liver surgery related morbidity or mortality, and resection margin status. Conclusion: The LiMAx test is a helpful and reliable tool to precisely determine the liver function capacity. It aids in accurate patient selection for major or minor liver resections in minimally invasive liver surgery, which consequently serves to improve patients’ safety. In this way, liver resections can be performed safely, even in patients with reduced liver function, without negatively affecting morbidity, mortality and the resection margin status, which is an important predictive oncological factor.
    Type of Medium: Online Resource
    ISSN: 2077-0383
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2662592-1
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  • 4
    In: JAMA Surgery, American Medical Association (AMA), Vol. 156, No. 9 ( 2021-09-01), p. 865-
    Type of Medium: Online Resource
    ISSN: 2168-6254
    Language: English
    Publisher: American Medical Association (AMA)
    Publication Date: 2021
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  • 5
    In: Magnetic Resonance Imaging, Elsevier BV, Vol. 77 ( 2021-04), p. 21-27
    Type of Medium: Online Resource
    ISSN: 0730-725X
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 1500646-3
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  • 6
    In: British Journal of Surgery, Oxford University Press (OUP), Vol. 109, No. 3 ( 2022-02-24), p. 251-255
    Abstract: In this study of 400 patients with early-onset rectal cancer, 12.5 per cent demonstrated microsatellite instability (MSI). MSI was associated with a reduced likelihood of nodal positivity, an increased rate of pathological complete response, and improved disease-specific survival.
    Type of Medium: Online Resource
    ISSN: 0007-1323 , 1365-2168
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2006309-X
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  • 7
    In: Digestive Medicine Research, AME Publishing Company, Vol. 4 ( 2021-9), p. 48-48
    Type of Medium: Online Resource
    ISSN: 2617-1627
    Language: Unknown
    Publisher: AME Publishing Company
    Publication Date: 2021
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  • 8
    In: British Journal of Surgery, Oxford University Press (OUP), Vol. 109, No. 7 ( 2022-06-14), p. 632-636
    Abstract: The molecular profile of early-onset colonic cancer is undefined. This study evaluated clinicopathological features and oncological outcomes of young patients with colonic cancer according to microsatellite status. Methods Anonymized data from an international collaboration were analysed. Criteria for inclusion were patients younger than 50 years diagnosed with stage I–III colonic cancer that was surgically resected. Clinicopathological features, microsatellite status, and disease-specific outcomes were evaluated. Results A total of 650 patients fulfilled the criteria for inclusion. Microsatellite instability (MSI) was identified in 170 (26.2 per cent), whereas 480 had microsatellite-stable (MSS) tumours (relative risk of MSI 2.5 compared with older patients). MSI was associated with a family history of colorectal cancer and lesions in the proximal colon. The proportions with pathological node-positive disease (45.9 versus 45.6 per cent; P = 1.000) and tumour budding (20.3 versus 20.5 per cent; P = 1.000) were similar in the two groups. Patients with MSI tumours were more likely to have BRAF (22.5 versus 6.9 per cent; P & lt; 0.001) and KRAS (40.0 versus 24.2 per cent; P = 0.006) mutations, and a hereditary cancer syndrome (30.0 versus 5.0 per cent; P & lt; 0.001; relative risk 6). Five-year disease-free survival rates in the MSI group were 95.0, 92.0, and 80.0 per cent for patients with stage I, II, and III tumours, compared with 88.0, 88.0, and 65.0 per cent in the MSS group (P = 0.753, P = 0.487, and P = 0.105 respectively). Conclusion Patients with early-onset colonic cancer have a high risk of MSI and defined genetic conditions. Those with MSI tumours have more adverse pathology (budding, KRAS/BRAF mutations, and nodal metastases) than older patients with MSI cancers.
    Type of Medium: Online Resource
    ISSN: 0007-1323 , 1365-2168
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2006309-X
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  • 9
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2023
    In:  Die Chirurgie Vol. 94, No. 10 ( 2023-10), p. 888-889
    In: Die Chirurgie, Springer Science and Business Media LLC, Vol. 94, No. 10 ( 2023-10), p. 888-889
    Type of Medium: Online Resource
    ISSN: 2731-6971 , 2731-698X
    Language: German
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 3120893-9
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  • 10
    In: Diagnostics, MDPI AG, Vol. 13, No. 3 ( 2023-01-28), p. 484-
    Abstract: Giant cell arteritis (GCA) is an immune-mediated vasculitis that affects large arteries. It has been hypothesized that viruses may trigger inflammation within the vessel walls. Genetic studies on human leukocyte antigens (HLAs) have previously reported HLA-DRB1*04 as a susceptible allele for GCA and HLA-DRB1*15 as a protective allele for GCA. Here, we discuss the clinical presentation, laboratory findings, HLA class I and class II analysis results, and management of patients with extracranial large-vessel (LV) GCA, detected at least six weeks after recovery from COVID-19. This case series encompassed three patients with LV-GCA (two males and a female with an age range of 63–69 years) whose leading clinical presentation included the presence of constitutional symptoms and significantly elevated inflammatory markers. The diagnosis of LV-GCA was confirmed by CT angiography and FDG-PET/CT, revealing inflammation in the large vessels. All were treated with corticosteroids, while two received adjunctive therapy. By analyzing HLA profiles, we found no presence of the susceptible HLA-DRB1*04 allele, while the HLA-DRB1*15 allele was detected in two patients. In conclusion, LV-GCA may be triggered by COVID-19. We highlight the importance of the early identification of LV-GCA following SARS-CoV-2 infection, which may be delayed due to the overlapping clinical features of GCA and COVID-19. The prompt initiation of therapy is necessary in order to avoid severe vascular complications. Future studies will better define the role of specific HLA alleles in patients who developed GCA following COVID-19.
    Type of Medium: Online Resource
    ISSN: 2075-4418
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2662336-5
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