96 research outputs found

    Collective Interview on the History of Town Meetings

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    As illustrated in the introduction, the special issue ends with a ‘collective interview’ to some distinguished scholars that have given an important contribution to the study of New England Town Meetings. The collective interview has been realized by submitting three questions to our interviewees, who responded individually in written. The text of the answers has not been edited, if not minimally. However, the editors have broken up longer individual answers in shorter parts. These have been subsequently rearranged in an effort to provide, as much as possible, a fluid structure and a degree of interaction among the different perspectives provided by our interviewees on similar issues. The final version of this interview has been edited and approved by all interviewees

    The Prospective Dutch Colorectal Cancer (PLCRC) cohort: real-world data facilitating research and clinical care

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    Real-world data (RWD) sources are important to advance clinical oncology research and evaluate treatments in daily practice. Since 2013, the Prospective Dutch Colorectal Cancer (PLCRC) cohort, linked to the Netherlands Cancer Registry, serves as an infrastructure for scientific research collecting additional patient-reported outcomes (PRO) and biospecimens. Here we report on cohort developments and investigate to what extent PLCRC reflects the “real-world”. Clinical and demographic characteristics of PLCRC participants were compared with the general Dutch CRC population (n = 74,692, Dutch-ref). To study representativeness, standardized differences between PLCRC and Dutch-ref were calculated, and logistic regression models were evaluated on their ability to distinguish cohort participants from the Dutch-ref (AU-ROC 0.5 = preferred, implying participation independent of patient characteristics). Stratified analyses by stage and time-period (2013–2016 and 2017–Aug 2019) were performed to study the evolution towards RWD. In August 2019, 5744 patients were enrolled. Enrollment increased steeply, from 129 participants (1 hospital) in 2013 to 2136 (50 of 75 Dutch hospitals) in 2018. Low AU-ROC (0.65, 95% CI: 0.64–0.65) indicates limited ability to distinguish cohort participants from the Dutch-ref. Characteristics that remained imbalanced in the period 2017–Aug’19 compared with the Dutch-ref were age (65.0 years in PLCRC, 69.3 in the Dutch-ref) and tumor stage (40% stage-III in PLCRC, 30% in the Dutch-ref). PLCRC approaches to represent the Dutch CRC population and will ultimately meet the current demand for high-quality RWD. Efforts are ongoing to improve multidisciplinary recruitment which will further enhance PLCRC’s representativeness and its contribution to a learning healthcare system

    Influence of Conversion and Anastomotic Leakage on Survival in Rectal Cancer Surgery; Retrospective Cross-sectional Study

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    Microvascular regeneration in meshed skin transplants after severe burns

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    Function of the skin lymphatics as well as blood perfusion of a meshed transplant is crucial for the healing. The lymphatic regeneration and arterial perfusion of skin transplants after severe burns of the extremities had been studied in eight patients by microlymphography, laser doppler perfusion imaging and transcutaneous oxygen pressure measurements 1, 6 and 18 months after transplantation. One month after transplantation, only fragmented as well as many giant lymphatic skin vessels were present in the transplant. After 6 months a normal lymphatic network had developed in all grafts. The extension of the dye in the lymphatics decreased from 4.5 (0-16) at 1 month to 3.0 (1-6) mm after 18 months, indicating improved lymph drainage capacity. The permeability of the lymphatics in the graft was normal. After 1 month, median laser flux in the transplant was 155.6% (105-246%) of the normal skin but it normalised within 18 months. By contrast, transcutaneous oxygen measurement (TcPO(2)) increased from 44 (21-47) to 55 (50-76) mmHg. In meshed transplants used to cover severely burned skin morphological and functional normal lymphatics develop within 6 months and the initially increased laser flux due to inflammatory reaction normalises. Our results provide important insights into the healing process of skin transplants after burn

    The effect of surgical strategy in difficult cholecystectomy cases on postoperative complications outcome: a value-based healthcare comparative study

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    Background: In patients undergoing laparoscopic cholecystectomy (LC) for complicated biliary disease, complication rates increase up to 30%. The aim of this study is to assess the effect of differences in surgical strategy comparing outcome data of two large volume hospitals. Methods: A prospective database was created for all the patients who underwent a LC in two large volume hospitals between January 2017 and December 2018. In cases of difficult cholecystectomy in clinic A, regular LC or conversion were surgical strategies. In clinic B, laparoscopic subtotal cholecystectomy was performed as an alternative in difficult cases. The difficulty of the cholecystectomy (score 1–4) and surgical strategy (regular LC, subtotal cholecystectomy, conversion) were scored. Postoperative complications, reinterventions, and ICU admission were assessed. For predicting adverse postoperative complication outcomes, uni- and multivariable analyses were used. Results: A total of 2104 patients underwent a LC in the study period of which 974 were from clinic A and 1130 were from clinic B. In total, 368 procedures (17%) were scored as a difficult cholecystectomy. In clinic A, more conversions were performed (4.4%) compared to clinic B (1.0%; p < 0.001). In clinic B, more subtotal laparoscopic cholecystectomies were performed (1.8%) compared to clinic A (0%; p = < 0.001). Overall complication rate was 8.2% for clinic A and 10.2% for clinic B (p = 0.121). Postoperative complication rates per group for regular LC, conversion, and subtotal cholecystectomy in difficult cholecystectomies were 45 (15%), 12 (24%), and 7 (35%; p = 0.035), respectively. The strongest predictor for Clavien–Dindo grade 3–5 complication was subtotal cholecystectomy. Conclusion: Surgical strategy in case of a difficult cholecystectomy seems to have an important impact on postoperative complication outcome. The effect of a subtotal cholecystectomy on complications is of great concern
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