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"van Ruler, O"
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Long-term outcomes after contaminated complex abdominal wall reconstruction
2020
PurposeComplex abdominal wall repair (CAWR) in a contaminated operative field is a challenge. Available literature regarding long-term outcomes of CAWR comprises studies that often have small numbers and heterogeneous patient populations. This study aims to assess long-term outcomes of modified-ventral hernia working group (VHWG) grade 3 repairs. Because the relevance of hernia recurrence (HR) as the primary outcome for this patient group is contentious, the need for further hernia surgery (FHS) was also assessed in relation to long-term survival.MethodsA retrospective cohort study with a single prospective follow-up time-point nested in a consecutive series of patients undergoing CAWR in two European national intestinal failure centers.ResultsIn long-term analysis, 266 modified VHWG grade 3 procedures were included. The overall HR rate was 32.3%. The HR rates for non-crosslinked biologic meshes and synthetic meshes when fascial closure was achieved were 20.3% and 30.6%, respectively. The rates of FHS were 7.2% and 16.7%, and occurred only within the first 3 years. Bridged repairs showed poorer results (fascial closure 22.9% hernia recurrence vs bridged 57.1% recurrence). Overall survival was relatively good with 80% en 70% of the patients still alive after 5 and 10 years, respectively. In total 86.6% of the patients remained free of FHS.ConclusionsIn this study of contaminated CAWR, non-crosslinked biologic mesh shows better results than synthetic mesh. Bridging repairs with no posterior and/or anterior fascial closure have a higher recurrence rate. The overall survival was good and the majority of patients remained free of additional hernia surgery.
Journal Article
Initial microbial spectrum in severe secondary peritonitis and relevance for treatment
by
Boermeester, M. A.
,
Kiewiet, J. J. S.
,
van Ruler, O.
in
Abdomen
,
Aged
,
Anti-Bacterial Agents - therapeutic use
2012
This study aims to determine whether abdominal microbial profiles in early severe secondary peritonitis are associated with ongoing infection or death. The study is performed within a randomized study comparing two surgical treatment strategies in patients with severe secondary peritonitis (
n
= 229). The microbial profiles of cultures retrieved from initial emergency laparotomy were tested with logistic regression analysis for association with ‘ongoing infection needing relaparotomy’ and in-hospital death. No microbial profile or the presence of yeast or
Pseudomonas
spp. was related to the risk of ongoing infection needing relaparotomy. Resistance to empiric therapy for gram positive cocci and coliforms was moderately associated with ongoing abdominal infection (OR 3.43 95%CI 0.95–12.38 and OR 7.61, 95%CI 0.75–76.94). Presence of only gram positive cocci, predominantly
Enterococcus
spp, was borderline independently associated with in-hospital death (OR 3.69, 95%CI 0.99–13.80). In secondary peritonitis microbial profiles do not predict ongoing abdominal infection after initial emergency laparotomy. However, the moderate association of ongoing infection with resistance to the empiric therapy compels to more attention for resistance when selecting empiric antibiotic coverage.
Journal Article
The development and validation of risk-stratification models for short-term outcomes following contaminated complex abdominal wall reconstruction
2020
BackgroundShort-term outcomes for patients undergoing contaminated complex abdominal wall reconstruction (CCAWR), including risk stratification, have not been studied in sufficiently high numbers. This study aims to develop and validate risk-stratification models for Clavien–Dindo (CD) grade ≥ 3 complications in patients undergoing CCAWR.MethodsA consecutive cohort of patients who underwent CCAWR in two European national intestinal failure centers, from January 2004 to December 2015, was identified. Data were collected retrospectively for short-term outcomes and used to develop risk models using logistic regression. A further cohort, from January 2016 to December 2017, was used to validate the models.ResultsThe development cohort consisted of 272 procedures performed in 254 patients. The validation cohort consisted of 114 patients. The cohorts were comparable in baseline demographics (mean age 58.0 vs 58.1; sex 58.8% male vs 54.4%, respectively). A multi-variate model including the presence of intestinal failure (p < 0.01) and operative time (p < 0.01) demonstrated good discrimination and calibration on validation. Models for wound and intra-abdominal complications were also developed, including pre-operative immunosuppression (p = 0.05), intestinal failure (p = 0.02), increasing operative time (p = 0.04), increasing number of anastomoses (p = 0.01) and the number of previous abdominal operations (p = 0.02). While these models showed reasonable ability to discriminate patients on internal assessment, they were not found to be accurate on external validation.ConclusionAcceptable short-term outcomes after CCAWR are demonstrated. A robust model for the prediction of CD ≥ grade 3 complications has been developed and validated. This model is available online at www.smbari.co.uk/smjconv2.
Journal Article
Identification of risk factors for an unfavorable laparoscopic cholecystectomy course after endoscopic retrograde cholangiography in the treatment of choledocholithiasis
by
Donkervoort, S. C.
,
van Geloven, A. A.
,
Dijksman, L. M.
in
Abdomen
,
Abdominal Surgery
,
Bile ducts
2010
Background
Laparoscopic cholecystectomy (LC) after an endoscopic retrograde cholangiography (ERC) has higher rates for complications and conversion caused by unpredictable adhesions. The risk factors for an adverse outcome of LC after an ERC were analyzed.
Methods
Variables from patients treated by LC after ERC for cholelithiasis in two clinics from 1996 to 2003 were retrospectively stored in a database. Complications and conversions were recorded.
Results
A total of 140 patients underwent LC after ERC (83 from clinic A and 57 from clinic B), 31% (44/140) of whom were men. Peri- or postoperative complications occurred for 28 patients (20%). For 19 patients (14%), a conversion was necessary. Significant variables associated with complications and conversions were an elevated level of C-reactive protein (CRP) at the time of LC (odds ratio [OR], 10.2; 95% confidence interval [CI], 1.1–91,
P
= 0.037 for both) and severe adhesions during laparoscopy (OR, 3.6; 95% CI, 1.5–8.6;
P
= 0.003 and OR, 5.2; 95% CI, 1.9–14.4;
P
= 0.002, respectively). Male gender (OR, 2.8; 95% CI, 1.1–7.6;
P
= 0.037) and serum bilirubin level at the time of ERC (OR, 3.7; 95% CI, 1.24–11;
P
= 0.014) were associated with conversion only. Time after ERC (LC within 1 week vs. >1 week or ≤2 weeks vs. 2–6 weeks vs. >6 weeks or ≤6 weeks vs. >6 weeks) was not associated with complications or conversion. Multivariate regression analysis showed a pre-LC CRP exceeding 6 to be predictive of complications (OR, 10.5; 95% CI, 1.1–95;
P
= 0.040) and conversion (OR, 10.6; 95% CI, 1.1–99;
P
= 0.034).
Conclusion
Male gender, bilirubin levels during ERC, severe adhesions during LC, and pre-LC CRP levels were associated with an adverse outcome for an LC after endoscopic cholangiography. The time between LC and ERC failed to be a significant risk factor in this larger series.
Journal Article
Survey among Surgeons on Surgical Treatment Strategies for Secondary Peritonitis
by
Boermeester, M.A.
,
van Till, J.W.O.
,
de Vos, R.
in
Adult
,
Aged
,
Digestive System Surgical Procedures
2004
Background: There is controversy about performing either a planned relaparotomy (PR) or relaparotomy on demand (ROD) in patients with secondary peritonitis. Subjective factors influencing surgeons in decision making for either surgical treatment strategy have never been studied. Methods: All 858 surgeons of the Association of Surgeons of The Netherlands were sent a survey with 16 case vignettes simulating peritonitis patients and evaluating the preference for PR or ROD. Results: Sixty-two percent of surgeons responded to the survey. Of the returned surveys, 407 were eligible for evaluation. The responding surgeons had a slight overall preference for the ROD strategy, as shown by the mean overall preference score of 5.2 (range 3.54–6.52, with a maximal score of 7). Gastrointestinal surgeons and surgeons working in regional and smaller hospitals were significantly more in favour of a ROD strategy than their counterparts. Factors significantly influencing the preference towards PR were ischaemia as aetiology and performing a primary anastomosis; as for ROD, it was small bowel as focus, local extent of contamination and the question whether abdominal closure was possible. However, there was a considerable variability in treatment decisions by surgeons. Conclusion: The majority of responding surgeons would make a choice for a particular treatment strategy based on peritonitis and surgical treatment characteristics. There was a slight overall preference towards the ROD strategy despite the considerable variability per case vignette.
Journal Article
Decision Making for Relaparotomy in Secondary Peritonitis
2008
Background/Aims: To provide a qualitative ranking of clinical variables by surgeons that influence their decision for reoperation and to evaluate whether these variables are related to positive findings at relaparotomy. Methods: Importance in decision making for relaparotomy was evaluated for 21 factors using a 10-point visual analogue scale (VAS). Variables with median VAS scores >5.0 were labeled ‘important’. Predictive value for positive findings was evaluated by multivariate analysis. Results: The response rate was 64%. For each variable, a wide range of VAS scores was given. Of variables labeled ‘important’, a diffuse extent of abdominal contamination (odds ratio, OR 1.9; 95% CI 0.99–3.8; p = 0.052), localization of the infectious focus (upper gastrointestinal tract including small bowel: OR 2.6, 95% CI 0.98–7.0, p = 0.055; colon: OR 2.4, 95% CI 0.93–6.0, p = 0.071), and both low (<3 × 10 9 /l: OR 4.6, 95% CI 1.3–17, p = 0.021) and high (>20 × 10 9 /l: OR 2.2, 95% CI 1.0–4.9, p = 0.042) leukocyte counts independently predicted positive relaparotomy. As a set, these variables had only moderate predictive accuracy (c-statistic 0.69). Conclusions: There was no consensus among surgeons which variables were important in decision making for relaparotomy. Only three out of ten variables labeled as ‘important’ were indeed independently predictive, but even as a set had only moderate predictive accuracy.
Journal Article
Failure of available scoring systems to predict ongoing infection in patients with abdominal sepsis after their initial emergency laparotomy
2011
Background
To examine commonly used scoring systems, designed to predict overall outcome in critically ill patients, for their ability to select patients with an abdominal sepsis that have ongoing infection needing relaparotomy.
Methods
Data from a RCT comparing two surgical strategies was used. The study population consisted of 221 patients at risk for ongoing abdominal infection. The following scoring systems were evaluated with logistic regression analysis for their ability to select patients requiring a relaparotomy: APACHE-II score, SAPS-II, Mannheim Peritonitis Index (MPI), MODS, SOFA score, and the acute part of the APACHE-II score (APS).
Results
The proportion of patients requiring a relaparotomy was 32% (71/221). Only 2 scores had a discriminatory ability in identifying patients with ongoing infection needing relaparotomy above chance: the APS on day 1 (AUC 0.61; 95%CI 0.52-0.69) and the SOFA score on day 2 (AUC 0.60; 95%CI 0.52-0.69). However, to correctly identify 90% of all patients needing a relaparotomy would require such a low cut-off value that around 80% of all patients identified by these scoring systems would have negative findings at relaparotomy.
Conclusions
None of the widely-used scoring systems to predict overall outcome in critically ill patients are of clinical value for the identification of patients with ongoing infection needing relaparotomy. There is a need to develop more specific tools to assist physicians in their daily monitoring and selection of these patients after the initial emergency laparotomy.
Trial registration number
ISRCTN:
ISRCTN 51729393
Journal Article
A decision rule to aid selection of patients with abdominal sepsis requiring a relaparotomy
2013
Background
Accurate and timely identification of patients in need of a relaparotomy is challenging since there are no readily available strongholds. The aim of this study is to develop a prediction model to aid the decision-making process in whom to perform a relaparotomy.
Methods
Data from a randomized trial comparing surgical strategies for relaparotomy were used. Variables were selected based on previous reports and common clinical sense and screened in a univariable regression analysis to identify those associated with the need for relaparotomy. Variables with the strongest association were considered for the prediction model which was constructed after backward elimination in a multivariable regression analysis. The discriminatory capacity of the model was expressed with the area under the curve (AUC). A cut-off analysis was performed to illustrate the consequences in clinical practice.
Results
One hundred and eighty-two patients were included; 46 were considered cases requiring a relaparotomy. A prediction model was build containing 6 variables. This final model had an AUC of 0.80 indicating good discriminatory capacity. However, acceptable sensitivity would require a low threshold for relaparotomy leading to an unacceptable rate of negative relaparotomies (63%). Therefore, the prediction model was incorporated in a decision rule were the interval until re-assessment and the use of Computed Tomography are related to the outcome of the model.
Conclusions
To construct a prediction model that will provide a definite answer whether or not to perform a relaparotomy seems a utopia. However, our prediction model can be used to stratify patients on their underlying risk and could guide further monitoring of patients with abdominal sepsis in order to identify patients with suspected ongoing peritonitis in a timely fashion.
Journal Article