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Controversial opinions exist concerning the effect of laparoscopic adjustable gastric banding on gastroesophageal reflux. MEDLINE and EMBASE databases were searched for relevant studies on patients undergoing adjustable gastric banding. Data are expressed in mean (range). Twenty studies were identified with a total of 3307 patients. The prevalence of reflux symptoms decreased postoperatively from 32.9% (16–57) to 7.7% (0–26.9) and medication use from 27.5% (16–38.5) to 9.5% (3.1–19.2). Newly developed reflux symptoms were found in 15% (6.1–20) of the patients. The percentage of esophagitis decreased postoperatively from 33.3% (19.4–61.6) to 27% (2.3–60.8). Newly developed esophagitis was observed in 22.9% (0–38.4). Pathological reflux was found in 55.8% (34.9–77.4) preoperatively and postoperatively in 29.4% (0–41.7) of the patients. Lower esophageal sphincter pressures increased from 12.9 to 16.9 mmHg (11.3–21.4). Lower esophageal sphincter relaxation decreased from 100% to 79.7% (58–86). The percentage of dysmotility increased from 3.5% (0–10) to 12.6% (0–25). Adjustable gastric banding has anti-reflux properties resulting in resolution or improvement of reflux symptoms, normalized pH monitoring results and a decrease of esophagitis on short term. However, worsening or newly developed reflux symptoms and esophagitis are found in a subset of patients during longer follow-up. [ABSTRACT FROM AUTHOR]

Background Many patients who have surgery for acute cholecystitis receive postoperative antibiotic prophylaxis, with the intent to reduce infectious complications. There is, however, no evidence that extending antibiotics beyond a single perioperative dose is advantageous. This study aimed to determine the effect of extended antibiotic prophylaxis on infectious complications in patients with mild acute cholecystitis undergoing cholecystectomy. Methods For this randomized controlled non-inferiority trial, adult patients with mild acute calculous cholecystitis undergoing cholecystectomy at six major teaching hospitals in the Netherlands, between April 2012 and September 2014, were assessed for eligibility. Patients were randomized to either a single preoperative dose of cefazolin (2000 mg), or antibiotic prophylaxis for 3 days after surgery (intravenous cefuroxime 750 mg plus metronidazole 500 mg, three times daily), in addition to the single dose. The primary endpoint was rate of infectious complications within 30 days after operation. Results In the intention-to-treat analysis, three of 77 patients (4 per cent) in the extended antibiotic group and three of 73 (4 per cent) in the standard prophylaxis group developed postoperative infectious complications (absolute difference 0·2 (95 per cent c.i. -8·2 to 8·9) per cent). Based on a margin of 5 per cent, non-inferiority of standard prophylaxis compared with extended prophylaxis was not proven. Median length of hospital stay was 3 days in the extended antibiotic group and 1 day in the standard prophylaxis group. Conclusion Standard single-dose antibiotic prophylaxis did not lead to an increase in postoperative infectious complications in patients with mild acute cholecystitis undergoing cholecystectomy. Registration number: NTR3089 (). [ABSTRACT FROM AUTHOR]

Background: Complication rates after a laparoscopic cholecystectomy are still up to 10 %. Knowledge of individual patient risk profiles could help to reduce morbidity.Aim: The aim of this study is to create risk profiles for specific complications to anticipate on individual outcome.Patients and Methods: Individual patient outcome for a specific post-operative complication was assessed from a retrospective database of two major teaching hospitals, using uni- and multivariable analyses.Results: A total of 4359 patients were included of which 346 developed one or more complications (8 %). Five risk profiles were found to predict specific complications: older patients (>65 year) are at risk for pneumonia (OR 7.0, 95 % CI 3.3-15.0, p < 0.001) and bleeding (OR 2.2, 95 % CI 1.2-3.9, p = 0.014), patients with acute cholecystitis are at risk for intra-abdominal abscess (OR 5.9, 95 % CI 3.4-10.1, p < 0.001), bile leakage (OR 3.6, 95 % CI 2.0-6.6, p < 0.001) and pneumonia (OR 3.5, 95 % CI 1.6-7.6, p < 0.002), previous history of cholecystitis is predictive for wound infection (OR 5.1, 95 % CI, (2.7-9.7), p < 0.001), intra-abdominal abscess (OR 6.1, 95 % CI 2.8-13.8, p < 0.001), post-operative bleeding (OR 4.8, 95 % CI 2.1-11.1, p < 0.001), bile leakage (OR 7.2, 95 % CI 3.4-15.4, p < 0.001) and pneumonia (OR 3.9, 95 % CI 1.3-11.9, p = 0.018), pre-operative ERCP is predictive for intra-abdominal abscess (OR 3.3, 95 % CI 2.0-5.7, p < 0.001), post-operative bleeding (OR 2.1, 95 % CI 1.2-3.9, p = 0.058) and pneumonia (OR 3.8, 95 % CI 1.9-7.8, p = 0.001), and converted patients are at risk for wound infection (OR 4.0, 95 % CI 2.1-7.7, p < 0.001) and intra-abdominal abscess (OR 3.5, 95 % CI 1.6-7.7, p = 0.002).Conclusion: Individual risk prediction of outcome after laparoscopic cholecystectomy is feasible. This facilitates individual pre-operative doctor-patient communication and may tailor surgical strategies. [ABSTRACT FROM AUTHOR]

Aim The study aimed to describe the serosal microcirculation of the human bowel using sidestream dark field imaging, a microscopic technique using polarized light to visualize erythrocytes through capillaries. We also compared its feasibility to the current practice of sublingual microcirculatory assessment. Method In 17 patients sidestream dark field measurements were performed during gastrointestinal surgery. Microcirculatory parameters like microvascular flow index ( MFI), proportion of perfused vessels ( PPV), perfused vessel density ( PVD) and total vessel density ( TVD) were determined for every patient, sublingually and on the bowel serosa. Results Sixty measurements were done on the bowel of which eight (13%) were excluded, five owing to too much bowel peristalsis and three because of pressure artefacts. Image stability was in favour of sublingual measurements [pixel loss per image, bowel 145 (95% CI 126-164) vs sublingual 55 (95% CI 41-68); P < 0.001] and time to acquire a stable image [bowel 96 s (95% CI 63-129) vs sublingual 46 s (95% CI 29-64); P = 0.013]. No difference in the MFI was observed [bowel 2.9 (interquartile range 2.87-2.95) vs sublingual 3.0 (interquartile range 2.91-3.0); P = 0.081]. There was a difference in the PPV [bowel 95% (95% CI 94-96) vs sublingual 97% (95% CI 97-99); P < 0.001], PVD [bowel 12.9 mm/mm2 (95% CI 11.1-14.8) vs sublingual 17.4 mm/mm2 (95% CI 15.6-19.1); P = 0.003] and the TVD [bowel 13.6 mm/mm2 (95% CI 11.6-15.6) vs sublingual 17.7 mm/mm2 (95% CI 16.0-19.4); P = 0.008]. Conclusion Sidestream dark field imaging is a very promising technique for bowel microcirculatory visualization and assessment. It is comparable to sublingual assessment and the analysis produces a similar outcome with slightly differing anatomical features. [ABSTRACT FROM AUTHOR]

This study aimed to describe the pharmacokinetics of midazolam and its cytochrome P450 3A (CYP3A) mediated metabolite 1-OH-midazolam in morbidly obese patients receiving oral and i.v. midazolam before ( n = 20) and one year after weight loss surgery ( n = 18), thereby providing insight into the influence of weight loss surgery on CYP3A activity in the gut wall and liver. In a semiphysiologically based pharmacokinetic (semi-PBPK) model in which different blood flow scenarios were evaluated, intrinsic hepatic clearance of midazolam (CLint,H) was 2 (95% CI 1.40-1.64) times higher compared to morbidly obese patients before surgery ( P < 0.01). Midazolam gut wall clearance (CLint,G) was slightly lower in patients after surgery ( P > 0.05), with low values for both groups. The results of the semi-PBPK model suggest that, in patients after weight loss surgery, CYP3A hepatic metabolizing capacity seems to recover compared to morbidly obese patients, whereas CYP3A mediated CLint,G was low for both populations and showed large interindividual variability. [ABSTRACT FROM AUTHOR]

Purpose Several studies have shown the potential benefit of cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (HIPEC) in gastric cancer patients. At present the most effective chemotherapeutic regime in HIPEC for gastric cancer is unknown. The aim of this review was to provide a comprehensive overview of chemotherapeutic agents used for HIPEC in gastric cancer. Methods A literature search was conducted using the PubMed database to identify studies on chemotherapy used for HIPEC in gastric cancer patients. Results and conclusion The chemotherapeutic regime of choice in HIPEC for gastric cancer has yet to be determined. The wide variety in studies and study parameters, such as chemotherapeutic agents, dosage, patient characteristics, temperature of perfusate, duration of perfusion, carrier solutions, intraperitoneal pressure and open or closed perfusion techniques, warrant more experimental and clinical studies to determine the optimal treatment schedule. A combination of drugs probably results in a more effective treatment. [ABSTRACT FROM AUTHOR]

Objectives: To compare the diagnostic accuracy of conditional computed tomography (CT), i.e. CT when initial ultrasound findings are negative or inconclusive, and immediate CT for patients with suspected appendicitis.Methods: Data were collected within a prospective diagnostic accuracy study on imaging in adults with acute abdominal pain. All patients underwent ultrasound and CT, read by different observers who were blinded from the other modality. Only patients with clinical suspicion of appendicitis were included. An expert panel assigned a final diagnosis to each patient after 6 months of follow-up (clinical reference standard).Results: A total of 422 patients were included with final diagnosis appendicitis in 251 (60 %). For 199 patients (47 %), ultrasound findings were inconclusive or negative. Conditional CT imaging correctly identified 241 of 251 (96 %) appendicitis cases (95 %CI, 92 % to 98 %), versus 238 (95 %) with immediate CT (95 %CI, 91 % to 97 %). The specificity of conditional CT imaging was lower: 77 % (95 %CI, 70 % to 83 %) versus 87 % for immediate CT (95 %CI, 81 % to 91 %).Conclusion: A conditional CT strategy correctly identifies as many patients with appendicitis as an immediate CT strategy, and can halve the number of CTs needed. However, conditional CT imaging results in more false positives.Key Points: • Conditional CT (CT after negative/inconclusive ultrasound findings) can be used for suspected appendicitis. • Half the number of CT examinations is needed with a conditional strategy. • Conditional CT correctly identifies as many patients with appendicitis as immediate CT. • Conditional imaging results in more false positive appendicitis cases. [ABSTRACT FROM AUTHOR]

Background The Stent-In 2 trial randomized patients with malignant colonic obstruction to emergency surgery or stent placement as a bridge to elective surgery. The aim of this study was to compare the oncological outcomes. Methods Disease recurrence, and disease-free, disease-specific and overall survival were evaluated, including a subgroup analysis of patients with a stent- or guidewire-related perforation. Results Of 98 patients included in the original Stent-In 2 trial, patients with benign (16) or incurable (23) disease were excluded from this study, along with a patient who had withdrawn from the trial. Of the remaining 58 patients, 32 were randomized to emergency surgery (31 resection, 1 stoma only) and 26 to stenting. Unsuccessful stenting required emergency surgery in six patients owing to wire or stent perforation. Locoregional or distant disease recurrence developed in nine of 32 patients in the emergency surgery group and 13 of 26 in the stent group. Disease-free survival was worse in the subgroup with stent- or guidewire-related perforation. Five of six patients in this subgroup developed a recurrence, compared with nine of 32 in the emergency surgery group and eight of 20 who had unperforated stenting. Conclusion Stent placement for malignant colonic obstruction was associated with a risk of recurrence in this trial, but the numbers are small. There is not enough evidence to refute the approach strongly. Registration number: ISRCTN46462267 ( ). [ABSTRACT FROM AUTHOR]

Background: It is generally accepted that patients following an episode of diverticulitis should have additional colonoscopy screening to rule out a colorectal malignancy. We aimed to investigate the rate of CRC found by colonoscopy after an attack of uncomplicated diverticulitis. Methods: MEDLINE, Embase, and Cochrane databases were searched systematically for clinical trials or observational studies on colonic evaluation by colonoscopy after the initial diagnosis of acute uncomplicated diverticulitis, followed by hand-searching of reference lists. Results: Nine studies met the inclusion criteria and included a total number of 2,490 patients with uncomplicated diverticulitis. Subsequent colonoscopy after an episode of uncomplicated diverticulitis was performed in 1,468 patients (59 %). Seventeen patients were diagnosed with CRC, having a prevalence of 1.16 % (95 % confidence interval 0.72-1.9 % for CRC). Hyperplastic polyps were seen in 156 patients (10.6 %), low-grade adenoma in 90 patients (6.1 %), and advanced adenoma was reported in 32 patients (2.2 %). Conclusion: Unless colonoscopy is regarded for screening in individuals aged 50 years and older, routine colonoscopy in the absence of other clinical signs of CRC is not required. [ABSTRACT FROM AUTHOR]

Patients with choledochocystolithiasis are usually treated by endoscopic retrograde cholangiography with endoscopic sphincterotomy (ES) followed by laparoscopic cholecystectomy (LC). LC after ES is more difficult than in uncomplicated gallstone disease, possibly due to bacterial colonization of the common bile duct. The goal of this study was to evaluate if bactobilia influences the peri- and postoperative outcomes. Data were obtained from a randomized trial on the timing of LC after ES. Ninety-six patients were randomized after ES to LC either within 72 h (early LC [ELC]) or in 6-8 weeks (delayed LC [DLC]). In 64 of 96 patients bile samples were obtained peroperatively. The overall prevalence of bactobilia was 62.5% [40/64; 50% of ELC patients (n = 13) vs. 71.1% in the DLC group (n = 27); p = 0.088]. Age and group (i.e. ELC/DLC) were independent and significant predictors for the presence of bactobilia. The presence of bactobilia did not influence operating time and difficulty or conversion rate. Patients with bactobilia developed more biliary events in the period between ES and LC (44 vs. 28%). After ES for choledochocystolithiasis, 62.5% of patients have bactobilia at the time of surgery. The prevalence of bactobilia increases with age and time. Patients with bactobilia tend to develop more biliary-related complications awaiting surgery. Copyright © 2011 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]

Objectives: Head-to-head comparison of ultrasound and CT accuracy in common diagnoses causing acute abdominal pain.Materials and Methods: Consecutive patients with abdominal pain for >2 h and <5 days referred for imaging underwent both US and CT by different radiologists/radiological residents. An expert panel assigned a final diagnosis. Ultrasound and CT sensitivity and predictive values were calculated for frequent final diagnoses. Effect of patient characteristics and observer experience on ultrasound sensitivity was studied.Results: Frequent final diagnoses in the 1,021 patients (mean age 47; 55% female) were appendicitis (284; 28%), diverticulitis (118; 12%) and cholecystitis (52; 5%). The sensitivity of CT in detecting appendicitis and diverticulitis was significantly higher than that of ultrasound: 94% versus 76% (p < 0.01) and 81% versus 61% (p = 0.048), respectively. For cholecystitis, the sensitivity of both was 73% (p = 1.00). Positive predictive values did not differ significantly between ultrasound and CT for these conditions. Ultrasound sensitivity in detecting appendicitis and diverticulitis was not significantly negatively affected by patient characteristics or reader experience.Conclusion: CT misses fewer cases than ultrasound, but both ultrasound and CT can reliably detect common diagnoses causing acute abdominal pain. Ultrasound sensitivity was largely not influenced by patient characteristics and reader experience. [ABSTRACT FROM AUTHOR]

The article presents a study which examines the long-term outcome of laparoscopic adjustable gastric banding (LAGB) in individuals lost to follow up. An overview of the methodology used for the study is provided, along with information on LAGB and obesity. Results showed that 32.0 per cent of individuals subjected to LAGB reported a fair, good or excellent outcome. They stated that psychological factors impact the weight loss of individuals following LAGB.

The purpose of this study was to determine the cost for prevention and treatment of pressure ulcers from a hospital perspective and to identify the least resource-intensive pressure ulcer prevention strategy.Cost analyses were examined from a hospital perspective using direct costs. The study was carried out alongside a prospective cohort study on the incidence and risk factors for pressure ulcers.Two large teaching hospitals in the Netherlands with (partly) opposing approaches in prevention, a technological versus a human approach, were analyzed.The main outcome measures were resource use, costs of preventive measures and treatment, and pressure ulcer incidence in both hospitals.Pressure ulcer prevention through a predominantly technical approach resulted in a similar incidence rate as prevention through a predominantly human approach.However, the technical approach was considerably less expensive. [ABSTRACT FROM AUTHOR]

Background: The percutaneous transgluteal approach is a well-accepted method for drainage of deep pelvic abscesses. Recently, in 3 patients, transgluteal drainage was complicated by the development of large gluteal abscesses requiring multiple surgical interventions. Methods: This report describes these cases as well as a search of the literature. Results: Three patients with a complicated clinical course after colon resection are described. After CT-guided percutaneous transgluteal drainage of the pelvic abscess, large gluteal abscesses were diagnosed after 2–6 weeks. Subsequent surgical interventions were needed to adequately drain these abscesses. In the literature, transgluteal drainage of pelvic abscesses is well described as a safe and efficient method. However, until now the development of gluteal abscesses has not been mentioned as a complication in the literature. Conclusion: In our own experience, a transrectally (radiologically or surgically performed) drainage route is recommended in patients who develop a deep pelvic abscess after bowel resection and suspicion of an anastomotic leak. Copyright © 2009 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]

OBJECTIVE: Not all morbidly obese patients attain sufficient weight loss after laparoscopic adjustable gastric banding (LAGB). We examined patients' explanations for unsuccessful weight loss and self-awareness regarding food intake. METHODS: Interviews with 11 patients (10 female/1 male; mean age 46 years) with unsuccessful weight loss were transcribed and analyzed with the MAXqda2 program. RESULTS: Interviewees were disappointed with the postoperative outcome. Some showed no awareness of their own role, while others were inefficacious to continue the actions needed to maintain weight loss, especially during times of stress. Typical statements that distinguished interviewees were: 'It didn't work out', 'I don't care anymore', 'I know I have to do it', 'I know I can do it'. CONCLUSION: Some patients with unsuccessful weight loss after LAGB are insufficiently aware that their own effort is needed to maintain weight loss. Others have self-awareness, but find it difficult to turn awareness into action. PRACTICE IMPLICATIONS: This group could perhaps be helped by tailoring postoperative guidance to the stage of change of an individual patient. Counseling could include increasing awareness of the need to self-control eating and offering assistance to turn intentions into action and to deal with stress, emotions and physical problems. [ABSTRACT FROM AUTHOR]

Objective:The objective of this study was to systematically evaluate the molecular basis of the association between visceral fat mass and plasma plasminogen activator inhibitor-1 (PAI-1) levels in man.Design:A comprehensive approach comprising observational, in vitro, and human intervention studies.Measurements and results:We confirmed an exclusive relationship between visceral fat and plasma PAI-1 levels (r=0.79, P<0.001) and corroborated preferential PAI-1 release from adipose tissue explants. Yet, messenger RNA analysis and in vivo measurement of PAI-1 release from visceral fat (AV-differences over the omentum) not only excluded visceral adipose tissue as a relevant source of circulating PAI-1, but also excluded visceral fat as a significant source of proinflammatory mediators such as tumor necrosis factor-α, IL-1 or transforming growth factor-β that could induce PAI-1 expression in tissues other than visceral fat. Short-term interventions with acipimox and growth hormone (GH) as well as statistical evaluation excluded free fatty acids and GH as metabolic links. Further analysis of the metabolic data in a stepwise regression model indicated that plasma PAI-1 levels and visceral fat rather are co-correlates that both relate to impaired lipid handling.Conclusion:Our PAI-1 studies show that visceral fat mass and plasma PAI-1 levels are co-correlated rather than causatively related, with lipid load as common denominator.International Journal of Obesity (2007) 31, 1671–1679; doi:10.1038/sj.ijo.0803650; published online 1 May 2007 [ABSTRACT FROM AUTHOR]

Background: Minimally invasive procedures to treat infected necrotizing pancreatitis (INP) are gaining popularity. The proportion of patients suitable for this approach remains unknown. Methods: Preoperative computed tomography (CT) scans were reviewed from 106 consecutive patients who had surgery for INP between 2000 and 2003 in 11 Dutch hospitals. Collections related to the pancreas were classified according to their distance from the left abdominal wall. Five radiologists judged 'accessibility' for drain placement and the likelihood that there was a fluid component that would drain ('drainability'). Agreement between radiologists was determined. Results: CT scans of 80 (75 per cent) patients were available (59 men; age range 29-80 years). The median interval between hospital admission and preoperative CT scan was 20 days. In 55 (69 per cent) patients, the lateral border of the collection was less than 5 cm from the left abdominal wall. Placement of a drain was deemed feasible in 67 (84 (range 77-89) per cent) patients; mean(s.d.) kappa 0.428(0-096). In 45 (56 per cent) patients, a drain could be placed through the left retroperitoneum. In 43 (54 (range 49-82) per cent) patients, collections were judged to contain a drainable fluid component. Interobserver agreement on 'drainability' was poor, mean(s.d.) kappa 0.289(0.101). Conclusion: Most peripancreatic collections in INP were considered accessible to a minimally invasive approach. [ABSTRACT FROM AUTHOR]

Surgical intervention in patients with infected necrotizing pancreatitis generally consists of laparotomy and necrosectomy. This is an invasive procedure that is associated with high morbidity and mortality rates. In this report, we present an alternative minimally invasive technique: videoscopic assisted retroperitoneal debridement (VARD). This technique can be considered a hybrid between endoscopic and open retroperitoneal necrosectomy. A detailed technical description is provided and the advantages over various other minimally invasive retroperitoneal techniques are discussed. [ABSTRACT FROM AUTHOR]

Background: In western countries, laparoscopic gastric banding is increasingly used in the surgical treatment of morbid obesity. This study aimed to investigate the feasibility, safety, morbidity, and costs of an outpatient procedure (OP) compared with an overnight stay (OS).Methods: In a 2-year period, 50 consecutive patients were randomized to an OP group or an OS group.Results: In the OP group, 76% of the patients were successfully discharged the same day, without readmissions. Four procedures were converted, and one complication occurred. The patients in the OP group seemed to experience more pain (p = 0.009). Satisfaction scores were 8.1 (OP) and 8.8 (OS) (p = 0.06). Half of the OP patients and most of the OS patients preferred a clinical admission. The OP treatment cost 600 euros less than OS.Conclusion: With proper patient selection, laparoscopic gastric banding can be performed safely and at lower cost as an outpatient procedure. [ABSTRACT FROM AUTHOR]