Obesity surgery
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Randomized Controlled Trial Multicenter Study
The EMPOWER study: randomized, prospective, double-blind, multicenter trial of vagal blockade to induce weight loss in morbid obesity.
Intermittent, reversible intraabdominal vagal blockade (VBLOC® Therapy) demonstrated clinically important weight loss in feasibility trials. EMPOWER, a randomized, double-blind, prospective, controlled trial was conducted in USA and Australia. ⋯ VBLOC® therapy to treat morbid obesity was safe, but weight loss was not greater in treated compared to controls; clinically important weight loss, however, was related to hours of device use. Post-study analysis suggested that the system electrical safety checks (low charge delivered via the system for electrical impedance, safety, and diagnostic checks) may have contributed to weight loss in the control group.
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Obesity-related comorbidities are treated by Roux-en-Y gastric bypass (RYGB) due to weight loss and intestinal hormone changes. Few studies report the evolution of these comorbidities in a long-term follow-up, especially if weight regain is present. This study aims to analyze: (1) the resolution of obesity-related comorbidities after RYGB in a long-term follow-up and (2) its relationship to weight regain. ⋯ Our results show that comorbidities remission after RYGB is sustained in a long-term follow-up. Weight regain is linked to worse results for all comorbidities except infertility.
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Review Comparative Study
Maternal and neonatal outcome after laparoscopic adjustable gastric banding: a systematic review.
The number of women of reproductive age undergoing bariatric surgery, including laparoscopic adjustable gastric banding (LAGB), has increased in recent years. The objective of this study was to list both maternal and neonatal outcomes in pregnancies in obese women (BMI ≥ 30 kg/m(2)) after LAGB and compare them with pregnancies in obese or normal weight women without LAGB. Studies showed a lower incidence of gestational diabetes, pregnancy-induced hypertension (PIH), pre-eclampsia, caesarean section (CS), macrosomia, and low birth weight babies in post-LAGB pregnancies compared to pregnancies in obese women without LAGB. ⋯ However, the incidence of PIH, pre-eclampsia, CS, preterm birth, large for gestational age, spontaneous abortion, and NICU admission was higher in post-LAGB pregnancies than in normal weight pregnancies. In conclusion, LAGB seems to improve pregnancy outcomes in obese women, even when obesity is still present at the onset of pregnancy. However, further research is needed and pregnant women with a gastric band should always be closely monitored by a multidisciplinary team.
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Diabetes surgery in nonobese or moderately obese patients is an emerging topic. The identification of preoperative factors predicting diabetes outcome following bariatric surgery, especially for metabolic nonresponders, is imperative. ⋯ A long history of preoperative T2DM, high preoperative HbA1c levels, and a preoperative therapy consisting of diverse approaches to diabetes treatment may be factors predicting failure of diabetes improvement in the early postoperative course after bariatric surgery. Age, preoperative insulin, and oral antidiabetic medication can be regarded as independent, significant predictors for metabolic outcome after bariatric surgery.
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Review Meta Analysis
Bariatric surgery is effective and safe in patients over 55: a systematic review and meta-analysis.
Effective weight loss and reduction in comorbidities has been convincingly demonstrated with bariatric surgery. Concerns regarding increased perioperative complications and poor results have led to a reluctance to offer such surgery to older patients. We performed a systematic review and meta-analysis of the published evidence for those in the ≥55-year age group. ⋯ Meta-analysis of old versus young patients revealed better comorbidity and mortality outcomes for younger patients. Bariatric surgery for patients ≥55 years achieves weight loss and reduction in comorbidities and mortality comparable to the general bariatric surgery population. Based on the above findings, patients should not be denied bariatric surgery on the basis of age alone.