Preoperative Very Low-Calorie Diet and Operative Outcome After Laparoscopic Gastric Bypass

Nieuwenhove, Yves Van; Dambrauskas, Žilvinas; Campillo-Soto, Álvaro; Dielen, François van; Wiezer, René J.; Janssen, Ignace; Kramer, Michael; Thorell, Anders

doi:10.1001/archsurg.2011.273

Cited by 206 publications

(162 citation statements)

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“…Several studies 17,[19][20][21] demonstrate the effectiveness of preoperative all-liquid meal-replacement diets, which provide greater control over caloric and nutritional intake. All-liquid diets tend to deliver fewer calories than conventional diets, reducing the length of time required to meet particular preoperative weight loss goals.…”

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confidence: 99%

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Pre-bariatric surgery weight loss requirements and the effect of preoperative weight loss on postoperative outcome

et al. 2012

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Pre-bariatric surgery requirements vary between surgeons and surgical centers, with standards of practice not yet established. The goal of this systematic review was to summarize and evaluate the available literature on pre-bariatric surgery weight loss requirements and the relation between preoperative weight loss and postoperative outcome. Major databases, including Medline, PubMed and PsychINFO were searched for relevant articles. Case studies, studies420 years old and studies that utilized selfreported body weight data were excluded. Data on the effect of the following was summarized: (1) preoperative requirements on preoperative weight loss; (2) insurance-mandated preoperative requirements; (3) the contingency of receipt of surgery; (4) preoperative weight loss on postoperative weight loss and (5) preoperative weight loss on perioperative and postoperative complication and comorbidity rates. The majority of studies suggest that: (1) current preoperative requirements held by the majority of third party payer organizations in the United States are ineffective in fostering preoperative weight loss; (2) making receipt of surgery contingent upon achieving preoperative weight loss, and meal-replacement diets, may be particularly effective in fostering preoperative weight loss and (3) preoperative weight loss may lead to improvements in at least some relevant postoperative outcomes. However, a preoperative weight loss mandate may lead to the denial of surgery and subsequent health benefits to individuals who are unable to achieve a prespecified amount of weight. Overall, the limited number and quality of prospective studies in this area prohibits the much-needed establishment of standards of practice for pre-bariatric requirements.

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confidence: 99%

“…26 Thus, conclusions cannot be drawn from this report. Finally, one additional randomized trial was conducted by Van Nieuwenhove et al, 21 but included only a 30-day follow-up. This trial reported no difference in postoperative weight loss between RYGB patients losing weight (4.9 ± 3.6 kg) preoperatively on an 800 kcal per day all-liquid meal diet vs control.…”

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Pre-bariatric surgery weight loss requirements and the effect of preoperative weight loss on postoperative outcome

et al. 2012

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“…In a reanalysis with 12-month follow-up of the same study, Solomon et al (17) reported statistically significant improvement in body weight, BMI, and EBWL when patients who lost >5% EBW preoperatively were compared with those who did not. In the other rCT published, van nieuwenhove et al (12) reported no difference in weight loss 3 months after gastric bypass in patients randomized to preoperative vLCD (Modifast ® 800 kcal/day) compared to patients allocated to no preoperative diet regimen. However, 3 months is too short follow-up in order to make any conclusions, and the study was not designed to address this issue.…”

Section: Postoperative Weight Lossmentioning

confidence: 97%

“…In both of these, participating surgeons scored visibility as being improved after weight loss, although these were blinded to treatment allocation in only one study (12). Moreover, Alami et al (18) reported that estimated liver volume was reduced in patients who were successful in losing weight preoperatively, which further support the potential for this regimen to reduce technical complexity during bariatric surgery.…”

Section: Intraoperative Outcomesmentioning

confidence: 99%

Weight loss prior to bariatric surgery: An updated review of the literature

2014

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Background and Aims: prior to bariatric surgery, a preoperative weight-reducing regimen is usually adhered to in most centers. the clinical effects of such a regimen are yet to be determined.Material and Methods: We reviewed the current literature by searching in pubMed for publications reporting clinical effects resulting from a preoperative weight loss regimen prior to bariatric surgery published from January 1, 1995 to april 30, 2014.Results: in total, we identified 23 original publications and 2 review articles which met all inclusion criteria. these were included and fully analyzed with regard to effects of preoperative weight loss. in general, for parameters such as operating time and intraoperative complications including blood loss and recovery, inconsistent data were reported. Most studies included low number of patients and with heterogenic designs, and the results could not form the base for recommendations. however, for outcomes such as postoperative complications and weight development over time, data from large-scale studies and randomized controlled trials suggest beneficial effects following adherence to weight loss prior to bariatric surgery.Conclusion: although a large amount of data in the current literature on the effects of weight loss prior to bariatric surgery are inconsistent for many outcome parameters, recently published results regarding effects on postoperative complications and weight development over time strongly suggest that such a regimen should be recommended. Whether a certain degree of weight loss should be mandatory before being accepted for bariatric surgery is, however, still controversial.

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“…Pour les auteurs du consensus français, cet amaigrissement est inutile car il n'influence ni la mortalité, ni l'incidence des complications postopératoires, ni la perte de poids à long terme [29]. Cependant, deux études publiées récemment vont un peu à l'encontre de ces recommandations et préconisent au contraire un amaigrissement préopératoire chez le sujet obèse avant chirurgie bariatrique, même si les résultats objectifs de la perte de poids préopéra-toire (réduction de la perception de la difficulté de la procédure chirurgicale) demeurent modestes [30,31]. Le débat reste donc ouvert à l'heure actuelle.…”

Section: Recommandationsunclassified

Obésité et carences préopératoires

Flines¹,

Bruwier²,

Deroover

et al. 2013

Nutrition Clinique et Métabolisme

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Disponible sur Internet le 16 janvier 2013 RésuméLes carences nutritionnelles sont considérées comme rares au sein de la population occidentale compte tenu de la pléthore alimentaire actuelle. Cependant, en raison d'une alimentation riche en énergie mais pauvre du point de vue nutritionnel (pauvre en protéines, vitamines, minéraux et fibres), des déficiences nutritionnelles en vitamines et minéraux sont fréquemment rapportées chez le sujet obèse. De plus, la chirurgie bariatrique constitue actuellement le traitement le plus efficace de l'obésité morbide, mais une carence en micronutriments représente un problème important dans les suites de la chirurgie, contribuant dès lors à aggraver les carences préexistantes. Dans ce travail, nous envisageons la prévalence des carences nutritionnelles du sujet avec obésité morbide avant chirurgie bariatrique, les conséquences cliniques de ces déficiences et les recommandations pratiques qu'il convient d'appliquer chez ce type de patients. © 2013 Publié par Elsevier Masson SAS. Mots clés : Micronutriments ; Chirurgie bariatrique ; Déficiences nutritionnelles AbstractIt is a common belief that nutritional deficiencies are rare in the Western world due to a wide variety of food supply. However, obese people usually consume dense-energy food but of poor nutritional value that lacks proteins, vitamins, minerals and fiber; consequently, a high prevalence of micronutrient deficiencies in obese subjects has been reported. Moreover, bariatric surgery has been proven the most effective treatment of morbid obesity, but micronutrient deficiency following bariatric surgery is a major concern, worsening pre-operative nutritional deficiencies. In this article, we reviewed the litterature and highlighted the prevalence of nutritional deficiencies in the morbidly obese population prior to bariatric surgery, clinical consequences of these deficiencies and practical recommendations for these subjects.

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Preoperative Very Low-Calorie Diet and Operative Outcome After Laparoscopic Gastric Bypass

Abstract: Hypothesis: A 14-day very low-calorie diet (VLCD) regimen before a laparoscopic gastric bypass procedure will improve perioperative and postoperative outcomes.

Cited by 206 publications

References 27 publications

Pre-bariatric surgery weight loss requirements and the effect of preoperative weight loss on postoperative outcome

Pre-bariatric surgery weight loss requirements and the effect of preoperative weight loss on postoperative outcome

Weight loss prior to bariatric surgery: An updated review of the literature

Obésité et carences préopératoires

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