Publications by authors named "Arnalsteen L"

Objective: The aim of the study was to explore the impact of the absence of band fixation on the reoperation rate and to identify other risk factors for long-term complications.

Background: Laparoscopic adjustable gastric banding has been demonstrated to permit important weight loss and comorbidity improvement, but some bands will have to be removed mainly for failure or in case of planned 2-step surgery. Then, the absence of a gastro-gastric suture (GGS) would allow easier band removal.

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Objectives: Assessment of pregnancy outcomes after bariatric surgery and analysis of follow-up particularities of such pregnancies.

Patients And Methods: A retrospective study of 63 post-bariatric surgery pregnancies compared to 259 pregnancies of obese un-operated patients. Pregnancy outcomes, neonatal datas, delay influence between surgery and pregnancy beginning, bariatric surgery type and gastric banding (GB) loosening consequences were analysed.

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Context: For the last 10 yr, continuous glucose monitoring (CGM) has brought up new insights into the accuracy of blood glucose analysis.

Objective: Our objective was to determine how islet graft function was able to influence the various components of dysglycemia after islet transplantation (IT).

Design And Setting: We conducted a single-arm open-labeled study with a 3-yr follow-up in a referral center (ClinicalTrial.

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Background: The adrenal gland is a frequent site of dissemination for certain types of tumors. Aggressive treatment remains controversial. The benefit of adrenalectomy has been observed, but the ultimate role remains to be elucidated.

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Background: Extreme obesity increases morbi-mortality in bariatric surgery. We previously showed that significant weight loss can be obtained within 3 months in super-super obese patients (BMI > 60 kg/m(2)) with an intragastric balloon (IGB). Here, we explored the potential benefit of preoperative IGB on the outcome of laparoscopic gastric bypass (LGBP) in super-super obese patients.

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Background: After Roux-en-Y gastric bypass (RYGB), failing to lose enough weight or regaining weight is a concern for both patients and healthcare professionals. Our objective was to report the criteria for an early prediction of the failure to lose enough weight in the setting of a private practice and an academic center of obesity surgery.

Patients And Methods: A retrospective analysis of the 2-year weight loss profiles of patients after RYGB was performed using nonlinear mixed models.

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Background: Liver biopsy is considered as the gold standard for assessing nonalcoholic fatty liver disease (NAFLD) histologic lesions in patients with morbid obesity. The aim of this study was to determine the diagnostic utility of noninvasive markers of fibrosis (FibroTest), steatosis (SteatoTest), and steatohepatitis (NashTest, ActiTest) in these patients.

Materials And Methods: Two hundred and eighty-eight patients presenting with interpretable baseline operative biopsy and biomarkers, in an ongoing prospective cohort of patients treated with bariatric surgery, were included.

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Purpose: 25-OH D3 (D3) deficiency causes secondary hyperparathyroidism. Asymmetric gland hypertrophy may also lead to unnecessary parathyroid gland resection by mistaking these glands for parathyroid incidentalomas. We tested the hypothesis that D3 deficiency causes parathyroid gland hypertrophy.

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Background: The long-term outcome of type 2 diabetes mellitus after laparoscopic adjustable gastric banding (LAGB) is unknown.

Methods: A longitudinal cohort study was undertaken of patients with grade 3 obesity and type 2 diabetes or impaired fasting glucose (IFG) undergoing LAGB. Metabolic outcomes and quality of life (QoL) were assessed before and 5 years after LAGB.

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Gastric bypass (GBP) surgery was originally developed to treat patients with severe obesity. Nevertheless, in those with type 2 diabetes, GBP also exerts a spectacular effect on glucose metabolism, leading to remission of the diabetes in many cases. In this report, the basic principles of the surgical procedure are outlined together with a summary of the potential mechanisms that might explain the remarkable effects of this type of operation on glucose metabolism.

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BACKGROUND.: The original Edmonton protocol used fresh islets, but for obvious logistic advantages most transplant centers have implemented pretransplant culture in human albumin. The aim of this study was to improve current pretransplant human islet culture techniques.

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Background: Clinical guidelines edited in 2006 by the American Thyroid Association (ATA) and stated in the European Thyroid Association Consensus (ETA) recommend routine central lymph node dissection (level VI neck dissection) in addition to thyroidectomy for the surgical treatment of differentiated thyroid cancer. This central dissection increases the incidence of postoperative hypocalcemia, which is related to the resection or devascularization of the inferior parathyroids together with bilateral thymectomy. Some authors perform unilateral thymectomy in order to minimize this complication.

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Background: Operative excision of abdominal extra-adrenal paragangliomas (EAPs) does not preclude the late development of local-regional recurrence. We describe the incidence, characteristics, and outcome of this rarely reported feature.

Methods: Retrospective analysis of local-regional recurrence that occurred during follow-up of 51 consecutive patients operated for a sporadic (n = 26) or hereditary (n = 25) EAP.

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OBJECTIVE To investigate the influence of primary graft function (PGF) on graft survival and metabolic control after islet transplantation with the Edmonton protocol. RESEARCH DESIGN AND METHODS A total of 14 consecutive patients with brittle type 1 diabetes were enrolled in this phase 2 study and received median 12,479 islet equivalents per kilogram of body weight (interquartile range 11,072-15,755) in two or three sequential infusions within 67 days (44-95). PGF was estimated 1 month after the last infusion by the beta-score, a previously validated index (range 0-8) based on insulin or oral treatment requirements, plasma C-peptide, blood glucose, and A1C.

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Background & Aims: Severe obesity is implicated in development of nonalcoholic fatty liver disease (NAFLD). Bariatric surgery induces weight loss and increases survival time of obese patients, but little is known about its effects on liver damage. We performed a 5-year prospective study to evaluate fibrosis and nonalcoholic steatosis (NASH) in severely obese patients after bariatric surgery.

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Laparoscopic adjustable gastric banding is one of the most frequently performed bariatric procedures because of its low operative risk and morbidity. Postoperative chylothorax has never been reported following bariatric surgery. We present the case of a 41-year-old woman who developed a massive right chylothorax after a laparoscopic gastric banding, whose lymphogram showed thoracic duct disruption.

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Objective: The purpose of this article was to compare two strategies for insulin delivery in brittle type 1 diabetic patients: intraperitoneal insulin infusion (IPII) through an implantable pump and intraportal islet transplantation (IIT).

Methods: Thirteen consecutive patients (6 islet after kidney and 7 islet transplantation alone), treated with IIT according to the Edmonton protocol, were compared with 17 patients treated with IPII in the same center in a nonrandomized study. Both groups of patients were assessed for clinical profile, metabolic results, and adverse events during the 3-year period after implantation.

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Background: Preoperative oral gabapentin has been shown to reduce postoperative pain. However, the effects of gabapentin as an adjunct to regional anesthesia is unclear and its effects on chronic pain remains unknown. In patients undergoing thyroidectomy, we investigated the effects on early and late (at 6 mo) postoperative pain of preoperative oral gabapentin as an adjunct to superficial cervical plexus block (SCPB).

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Background: Metastases from follicular thyroid carcinoma (FTC) are usually blood borne and far less to lymph nodes (LN). The present study was designed to evaluate the factors that are associated with LN metastases in patients operated on for FTC.

Methods: A retrospective review of 70 patients (25 men; mean age, 47 (range, 14-92) years) operated on between January 1995 and December 2005 for FTC was undertaken.

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The laparoscopic Roux-en-Y gastric bypass (LRYGBP) is increasingly popular for the treatment of morbid obesity, although its postsurgical complications are often underestimated. We report the case of a 22-year-old morbidly obese woman who underwent a LRYGBP, which was rapidly complicated by portal venous thrombosis and severe neurological complications due to vitamin deficiencies. She presented rapid body weight loss with optic and peripheral neuropathy.

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Despite a stringent donor selection, human islet isolation remains frustratingly unpredictable. In this study, we measured acute insulin response to arginine (AIRarg), an in vivo surrogate measure of islet mass, in 29 human deceased donors before organ donation, and correlated values with the outcome of islet isolation. Thirteen isolations (45%) met the threshold for clinical islet transplantation.

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Background: The influence of the preservation solution used for in situ perfusion of the donor and pancreas storage on islet isolation has received little attention.

Methods: In this prospective controlled trial, we compared the outcome of human islet isolation from pancreata perfused with University of Wisconsin (UW) solution or Celsior, an alternative colloid-free extracellular solution.

Results: At the 1-year interim analysis, the viability and insulin secretion of islets isolated from donors perfused with UW (n=19) or Celsior (n=5) were identical.

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Background: Prevalence of obesity is increasing internationally. Obesity is also incriminated in the development of postoperative rhabdomyolysis (RML). Its major risk is the development of renal failure which is associated with high mortality.

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Background & Aims: In severely obese patients, factors implicated in the evolution of severe steatosis after bariatric surgery remain unresolved. Our aim was to determine whether insulin resistance (IR) influences the histologic effects induced by bariatric surgery.

Methods: We prospectively included 185 severely obese patients (body mass index >/=35 kg/m(2)) referred for bariatric surgery.

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Background: Laparoscopic bariatric operations can be technically challenging in massively obese patients. The potential of the intragastric balloon for preoperative weight reduction was evaluated in candidates for laparoscopic Roux-en-Y gastric bypass (LRYGBP) with super obesity.

Methods: From January 2004 to March 2005, 10 patients with super obesity who were potential candidates for LRYGBP were included in a prospective observational study.

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