9 results on '"Mannaerts, Guido"'
Search Results
2. Impact of the European Working Time Directive (EWTD) on the operative experience of surgery residents.
- Author
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Hopmans, Cornelis J., den Hoed, Pieter T., van der Laan, Lijckle, van der Harst, Erwin, van der Elst, Maarten, Mannaerts, Guido H.H., Dawson, Imro, Timman, Reinier, Wijnhoven, Bas P.L., and IJzermans, Jan N.M.
- Abstract
Background In Europe and the United States, work hour restrictions are considered to be particularly burdensome for residents in surgery specialties. The aim of this study was to examine whether reduction of the work week to 48 hours resulting from the implementation of the European Working Time Directive has affected the operative experience of surgery residents. Methods This study was conducted in a general surgery training region in the Netherlands, consisting of 1 university hospital and 6 district training hospitals. Operating records summarizing the surgical procedures performed as “primary surgeon” in the operating theater for different grades of surgeons were retrospectively analyzed for the period 2005–2012 by the use of linear regression models. Operative procedures performed by residents were considered the main outcome measure. Results In total, 235,357 operative procedures were performed, including 47,458 (20.2%) in the university hospital and 187,899 (79.8%) in the district training hospitals ( n = 5). For residents in the university hospital, the mean number of operative procedures performed per 1.0 full-time equivalent increased from 128 operations in 2005 to 204 operations in 2012 ( P = .001), whereas for residents in district training hospitals, no substantial differences were found over time. The mean (±SD) operative caseload of 64 residents who completed the 6-year training program between 2005 and 2012 was 1,391 ± 226 (range, 768–1856). A comparison of the operative caseload according to year of board-certification showed no difference. Conclusion Implementation of the European Working Time Directive has not affected adversely the number of surgical procedures performed by residents within a general surgical training region in the Netherlands. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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3. Assessment of surgery residents' operative skills in the operating theater using a modified Objective Structured Assessment of Technical Skills (OSATS): A prospective multicenter study.
- Author
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Hopmans, Cornelis J., den Hoed, Pieter T., van der Laan, Lijckle, van der Harst, Erwin, van der Elst, Maarten, Mannaerts, Guido H.H., Dawson, Imro, Timman, Reinier, Wijnhoven, Bas P.L., and IJzermans, Jan N.M.
- Abstract
Background With the implementation of competency-based curricula, Objective Structured Assessment of Technical Skills (OSATS) increasingly is being used for the assessment of operative skills. Although evidence for its usefulness has been demonstrated in experimental study designs, data supporting OSATS application in the operating room are limited. This study evaluates the validity and reliability of the OSATS instrument to assess the operative skills of surgery residents in the operating theater. Methods Twenty-four residents were recruited from seven hospitals within a general surgical training region and classified equally into three groups according to postgraduate training year (PGY). Each resident had to perform five different types of operations. Surgical performance was measured using a modified OSATS consisting of three scales: Global Rating Scale, Overall Performance Scale, and Alphabetic Summary Scale. Validity and reliability metrics included construct validity (Kruskal-Wallis test) and internal consistency reliability (Cronbach's α coefficient). Spearman's correlation coefficients were calculated to determine correlations between the different scales. Results Eighteen residents (PGY 1–2 [ n = 7]; PGY 3–4 [ n = 8]; PGY 5–6 [ n = 3]) performed 249 operations. Comparisons of the performance scores revealed that evidence for construct validity depended on the difficulty level of the selected procedures. For individual operations, internal consistency reliability of the Global Rating Scale ranged from 0.93 to 0.95. Scores on the different scales correlated strongly (r = 0.62–0.76, P < .001). Conclusion Assessment of operative skills in the operating theater using this modified OSATS instrument has the potential to establish learning curves, allowing adequate monitoring of residents' progress in achieving operative competence. The Alphabetic Summary Scale seems to be of additional value. Use of the Overall Performance Scale should be reconsidered. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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4. Underdiagnosis and overdiagnosis of asthma in the morbidly obese.
- Author
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van Huisstede, Astrid, Castro Cabezas, Manuel, van de Geijn, Gert-Jan M., Mannaerts, Guido H., Njo, Tjin L., Taube, Christian, Hiemstra, Pieter S., and Braunstahl, Gert-Jan
- Abstract
Background: The prevalence of obesity and asthma has increased concurrently over the last decades, suggesting a link between obesity and asthma. However, asthma might not be adequately diagnosed in this population. Aim: To investigate whether not only overdiagnosis but also underdiagnosis of asthma is present in an obese population. Methods: Morbidly obese subjects with or without physician-diagnosed asthma were recruited from a pre-operative screening programme for bariatric surgery, and were characterized using an extensive diagnostic algorithm. Results: 473 subjects were screened; 220 met inclusion criteria, and 86 agreed to participate. Among the 32 participating subjects who had a physician diagnosis of asthma, reversible airway obstruction and/or bronchial hyperresponsiveness could only be detected in 19 patients (59%, 95% CI [0.41-0.76]), whereas in 13 patients (41%, 95% CI [0.24-0.50]) the diagnosis of asthma could not be confirmed (overdiagnosis). In contrast, in the remaining 54 patients, 17 (31%, 95% CI [0.20-0.46]) were newly diagnosed with asthma (underdiagnosis). Conclusion: Besides overdiagnosis, there is also substantial underdiagnosis of asthma in the morbidly obese. Symptoms could be incorrectly ascribed to either obesity or asthma, and therefore also in the morbidly obese the diagnosis of asthma should also be based on pulmonary function testing. [ABSTRACT FROM AUTHOR]
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- 2013
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5. Effects on functional outcome after IORT-containing multimodality treatment for locally advanced primary and locally recurrent rectal cancer
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Mannaerts, Guido H.H., Rutten, Harm J.T., Martijn, Hendrik, Hanssens, Patrick E.J., and Wiggers, Theo
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RECTAL cancer treatment , *QUALITY of life , *PREOPERATIVE care , *HUMAN sexuality , *MULTIVARIATE analysis , *CANCER relapse , *TREATMENT effectiveness , *COMBINED modality therapy ,RECTUM tumors - Abstract
In the treatment of patients with locally advanced primary or locally recurrent rectal cancer, much attention is focused on the oncologic outcome. Little is known about the functional outcome. In this study, the functional outcome after a multimodality treatment for locally advanced primary and locally recurrent rectal cancer is analyzed.Purpose: Between 1994 and 1999, 55 patients with locally advanced primary and 66 patients with locally recurrent rectal cancer were treated with high-dose preoperative external beam irradiation, followed by extended surgery and intraoperative radiotherapy. To assess long-term functional outcome, all patients still alive (n = 97) were asked to complete a questionnaire regarding ongoing morbidity, as well as functional and social impairment. Seventy-six of the 79 patients (96%) returned the questionnaire. The median follow-up was 14 months (range: 4–60 months).Methods and Materials: The questionnaire revealed fatigue in 44%, perineal pain in 42%, radiating pain in the leg(s) in 21%, walking difficulties in 36%, and voiding dysfunction in 42% of the patients as symptoms of ongoing morbidity. Functional impairment consisted of requiring help with basic activities in 15% and sexual inactivity in 56% of the respondents. Social handicap was demonstrated by loss of former lifestyle in 44% and loss of professional occupation in 40% of patients.Results: As a result of multimodality treatment, the majority of these patients have to deal with long-term physical morbidity, the need for help with daily care, and considerable social impairment. These consequences must be weighed against the chance of cure if the patient is treated and the disability eventually caused by uncontrolled tumor progression if the patient is not treated. These potential drawbacks should be discussed with the patient preoperatively and taken into account when designing a treatment strategy. [Copyright &y& Elsevier]Conclusions: - Published
- 2002
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6. Treatment of giant hiatal hernia by laparoscopic Roux-en-Y gastric bypass.
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Duinhouwer, Lucia E., Biter, L. Ulas, Wijnhoven, Bas P., and Mannaerts, Guido H.
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Introduction Obesity is a risk factor for hiatal hernia. In addition, much higher recurrence rates are reported after standard surgical treatment of hiatal hernia in morbidly obese patients. Laparoscopic Roux-en-Y gastric bypass (LRYGB) is an effective surgical treatment for morbid obesity and is known to effectively control symptoms of gastroesophageal reflux (GERD). Case presentation Two patients suffering from giant hiatal hernias where a combined LRYGB and hiatal hernia repair (HHR) with mesh was performed are presented in this paper. There were no postoperative complications and at 1 year follow-up, there was no sign of recurrence of the hernia. Discussion The gold standard for all symptomatic reflux patients is still surgical correction of the paraesophageal hernia, including complete reduction of the hernia sac, resection of the sac, hiatal closure and fundoplication. However, HHR outcome is adversely affected by higher BMI levels, leading to increased HH recurrence rates in the obese. Conclusion Concomitant giant hiatal hernia repair with LRYGB appears to be safe and feasible. Moreover, LRYGB plus HHR appears to be a good alternative for HH patients suffering from morbid obesity as well than antireflux surgery alone because of the additional benefit of significant weight loss and improvement of obesity related co-morbidity. [ABSTRACT FROM AUTHOR]
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- 2015
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7. A5152 - The postoperative checklist for bariatric surgery.
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van Mil, Stefanie, Duinhouwer, Lucia, Mannaerts, Guido, Biter, Laser, and Apers, Jan
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- 2015
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8. A5039 - Discrepancies in the relationship of BMI and traditional cardiovascular risk factors in subjects with different levels of obesity.
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van Mil, Stefanie, van Huisstede, Astrid, Klop, Boudewijn, van de Geijn, Gert-Jan, Jan Braunstahl, Gert, Birnie, Erwin, Mannaerts, Guido, Biter, Laser, and Castro Cabezas, Manuel
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- 2015
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9. Acute phase proteins in drain fluid: a new screening tool for colorectal anastomotic leakage? The APPEAL study: analysis of parameters predictive for evident anastomotic leakage.
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Komen, Niels, Slieker, Juliette, Willemsen, Paul, Mannaerts, Guido, Pattyn, Piet, Karsten, Tom, de Wilt, Hans, van der Harst, Erwin, de Rijke, Yolanda B., Murawska, Magdalena, Jeekel, Johannes, and Lange, Johan F.
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ACUTE phase proteins , *PARAMETERS (Statistics) , *C-reactive protein , *LIPOPOLYSACCHARIDES , *CALCITONIN , *LONGITUDINAL method , *HEMICOLECTOMY - Abstract
BACKGROUND: We aim to determine if C-reactive protein (CRP), lipopolysaccharide-binding protein (LBP), and procalcitonin (PCT) in drain fluid can serve as screening tools for colorectal anastomotic leakage (CAL). METHODS: Patients included in this multicenter prospective observational study underwent left hemicolectomy, sigmoid resection, high anterior resection, low anterior resection, or subtotal colectomy. During the first 5 postoperative days, CRP, LBP, and PCT were determined on drain fluid. RESULTS: In total 243 patients were included, of whom 19 (8%) developed CAL. CRP levels were higher in patients with leakage on day 3 and day 5, levels of LBP were higher on days 2, 3, and 4, and PCT levels were higher on day 5. Multivariate analysis showed LBP to be significantly related to CAL. An increase in the average initial value at the first postoperative day with 1 standard deviation increased the risk of leakage by 1.6 times. CONCLUSION: Increased concentrations of LBP in drain fluid are significantly associated to a higher chance of CAL and could contribute in a future prognostic model for CAL. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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