Background
Excellent results have been reported with mini-gastric bypass. We adopted and modified the one-anastomosis gastric bypass (OAGB) concept. Herein is our approach, results, and long-term ...follow-up (FU).
Methods
Initial 1200 patients submitted to laparoscopic OAGB between 2002 and 2008 were analyzed after a 6–12-year FU. Mean age was 43 years (12–74) and body mass index (BMI) 46 kg/m
2
(33–86). There were 697 (58 %) without previous or simultaneous abdominal operations, 273 (23 %) with previous, 203 (17 %) with simultaneous, and 27 (2 %) performed as revisions.
Results
Mean operating time (min) was as follows: (a) primary procedure, 86 (45–180); (b) with other operations, 112 (95–230); and (c) revisions, 180 (130–240). Intraoperative complications led to 4 (0.3 %) conversions. Complications prompted operations in 16 (1.3 %) and were solved conservatively in 12 (1 %). Long-term complications occurred in 12 (1 %). There were 2 (0.16 %) deaths. Thirty-day and late readmission rates were 0.8 and 1 %. Cumulative FU was 87 and 70 % at 6 and 12 years. The highest mean percent excess weight loss was 88 % (at 2 years), then 77 and 70 %, 6 and 12 years postoperatively. Mean BMI (kg/m
2
) decreased from 46 to 26.6 and was 28.5 and 29.9 at those time frames. Remission or improvement of comorbidities was achieved in most patients. The quality of life index was satisfactory in all parameters from 6 months onwards.
Conclusions
Laparoscopic OAGB is safe and effective. It reduces difficulty, operating time, and early and late complications of Roux-en-Y gastric bypass. Long-term weight loss, resolution of comorbidities, and degree of satisfaction are similar to results obtained with more aggressive and complex techniques. It is currently a robust and powerful alternative in bariatric surgery.
Abstract Objectives To assess the benefits and risks of off-pump coronary artery bypass (OPCAB) versus coronary artery bypass grafting (CABG) through a meta-analysis of randomized controlled trials ...(RCTs), and to investigate the relationship between outcomes and patient risk profile. Methods PubMed, Embase, the Cumulative Index of Nursing and Allied Health Literature, Scopus, Web of Science, Cochrane Library, and major conference proceedings databases were searched for RCTs comparing OPCAB and CABG and reporting short-term (≤30 days) outcomes. Endpoints assessed were all-cause mortality, myocardial infarction (MI), and cerebral stroke. Results The meta-analysis included 100 studies, with a total of 19,192 subjects. There was no difference between the 2 techniques with respect to all-cause mortality and MI (odds ratio OR, 0.88; 95% confidence interval CI, 0.71-1.09; P = .25; I2 = 0% and OR, 0.90; 95% CI, 0.77-1.05; P = .19; I2 = 0%, respectively). OPCAB was associated with a significant 28% reduction in the odds of cerebral stroke (OR, 0.72; 95% CI, 0.56-0.92; P = .009; I2 = 0%). A significant relationship between patient risk profile and benefits from OPCAB was found in terms of all-cause mortality ( P < .01), MI ( P < .01), and cerebral stroke ( P < .01). Conclusions OPCAB is associated with a significant reduction in the odds of cerebral stroke compared with conventional CABG. In addition, benefits of OPCAB in terms of death, MI, and cerebral stroke are significantly related to patient risk profile, suggesting that OPCAB should be strongly considered in high-risk patients.
Background
Coronary artery bypass grafting (CABG) is performed both without and with cardiopulmonary bypass, referred to as off‐pump and on‐pump CABG respectively. However, the preferable technique ...is unclear.
Objectives
To assess the benefits and harms of off‐pump versus on‐pump CABG in patients with ischaemic heart disease.
Search methods
We searched the Cochrane Central Register of Controlled Trials (CENTRAL) on The Cochrane Library (Issue 1, 2011), MEDLINE (OVID, 1950 to February 2011), EMBASE (OVID, 1980 to February 2011), Science Citation Index Expanded on ISI Web of Science (1970 to February 2011) and CINAHL (EBSCOhost, 1981 to February 2011) on 2 February 2011. No language restrictions were applied.
Selection criteria
Randomised clinical trials of off‐pump versus on‐pump CABG irrespective of language, publication status and blinding were selected for inclusion.
Data collection and analysis
For statistical analysis of dichotomous data risk ratio (RR) and for continuous data mean difference (MD) with 95% confidence intervals (CI) were used. Trial sequential analysis (TSA) was used for analysis to assess the risk of random error due to sparse data and to multiple updating of accumulating data.
Main results
Eighty‐six trials (10,716 participants) were included. Ten trials (4,950 participants) were considered to be low risk of bias. Pooled analysis of all trials showed that off‐pump CABG increased all‐cause mortality compared with on‐pump CABG (189/5,180 (3.7%) versus 160/5144 (3.1%); RR 1.24, 95% CI 1.01 to 1.53; P =.04). In the trials at low risk of bias the effect was corroborated (154/2,485 (6.2%) versus 113/2,465 (4.5%), RR 1.35,95% CI 1.07 to 1.70; P =.01). TSA showed that the risk of random error on the result was unlikely. Off‐pump CABG resulted in fewer distal anastomoses (MD ‐0.28; 95% CI ‐0.40 to ‐0.16, P <.00001). No significant differences in myocardial infarction, stroke, renal insufficiency, or coronary re‐intervention were observed. Off‐pump CABG reduced post‐operative atrial fibrillation compared with on‐pump CABG, however, in trials at low risk of bias, the estimated effect was not significantly different.
Authors' conclusions
Our systematic review did not demonstrate any significant benefit of off‐pump compared with on‐pump CABG regarding mortality, stroke, or myocardial infarction. In contrast, we observed better long‐term survival in the group of patients undergoing on‐pump CABG with the use of cardiopulmonary bypass and cardioplegic arrest. Based on the current evidence, on‐pump CABG should continue to be the standard surgical treatment. However, off‐pump CABG may be acceptable when there are contraindications for cannulation of the aorta and cardiopulmonary bypass. Further randomised clinical trials should address the optimal treatment in such patients.
Despite several studies comparing off- and on-pump coronary artery bypass grafting (CABG), the effectiveness and outcomes of off-pump CABG still remain uncertain.
In this registry-based study, we ...assessed 8163 patients who underwent isolated CABG between 2014 and 2016. Propensity score matching (PSM), inverse probability of weighting (IPW) and covariate adjustment were performed to correct for and minimize selection bias.
The overall mean age of the patients was 62 years, and 25.7% were women. Patients who underwent off-pump CABG had shorter length of hospitalization (p < 0.001), intubation time (p = 0.003) and length of ICU admission (p < 0.001). Off-pump CABG was associated with higher risk of 30-days mortality (OR: 1.7; 95% CI 1.09-2.65; p = 0.019) in unadjusted analysis. After covariate adjustment and matching (PSM and IPW), this difference was not statistically significant. After an average of 36.1 months follow-up, risk of MACCE and all-cause mortality didn't have significant differences in both surgical methods by adjusting with IPW (HR: 1.03; 95% CI 0.87-1.24; p = 0.714; HR: 0.91; 95% CI 0.73-1.14; p = 578, respectively).
Off-pump and on-pump techniques have similar 30-day mortality (adjusted, PSM and IPW). Off-pump surgery is probably more cost-effective in short term; however, mid-term survival and MACCE trends in both surgical methods are comparable.
The One Anastomosis (Mini) Gastric Bypass is rapidly gaining acceptance. This review reports cumulative results of 12,807 procedures in obese patients with a mean age of 41.18 years and BMI of ...46.6 kg/m
2
. The overall mortality was 0.10% and the leak rate was 0.96%. The follow-up duration ranged from 6 months to 12 years. A marginal ulceration rate of 2.7% and an anaemia rate of 7.0% were reported. Approximately 2.0% of patients reported postoperative gastro-oesophageal reflux and 0.71% developed malnutrition. Excess weight loss at 6, 12, 24 and 60 months was 60.68, 72.56, 78.2 and 76.6% respectively. Type 2 diabetes mellitus and hypertension resolved in 83.7 and 66.94% respectively. We conclude that there is now sufficient evidence to include MGB-OAGB as a mainstream bariatric procedure.
Objective Selected patients appear to benefit from off-pump coronary artery bypass compared with conventional coronary artery bypass with cardiopulmonary bypass. It is unknown whether elderly ...patients undergoing isolated coronary artery bypass grafting operations derive any benefit when performed off-pump. We hypothesized that off-pump coronary bypass offers a greater operative benefit to elderly patients when compared with conventional coronary artery bypass. Methods A total of 1993 elderly patients (age ≥ 80 years) underwent isolated, primary coronary artery bypass graft operations at 16 different statewide centers from 2003 to 2008. Patients were stratified into 2 groups: conven-tional coronary artery bypass (n = 1589, age = 82.5 ± 2.4 years) and off-pump bypass (n = 404, age = 83.0 ± 2.4 years). Preoperative risk, intraoperative findings, postoperative complications, and costs were evaluated. Results Patients undergoing off-pump bypass grafting were marginally older ( P = .001) and had higher rates of preoperative atrial fibrillation (14.6% vs 10.0%; P = .01) and New York Heart Association class IV heart failure (29.7% vs 21.1%; P < .001) than did those having conventional coronary bypass grafting. Other patient risk factors and operative variables, including Society of Thoracic Surgeons predicted risk of mortality, were similar in both groups ( P = .15). Compared with off-pump bypass, conventional coronary bypass incurred higher blood transfusion rates (2.0 ± 1.7 units vs 1.6 ± 1.9 units; P = .05) as well as more postoperative atrial fibrillation (28.4% vs 21.5%; P = .003), prolonged ventilation (14.7% vs 11.4%; P = .05), and major complications (20.1% vs 15.6%; P = .04). Importantly, postoperative stroke (2.6% vs 1.7%; P = .21), renal failure (8.1% vs 6.2%; P = .12), and postoperative length of stay ( P = .41) were no different between groups. Despite more complications in patients having conventional bypass, operative mortality ( P = .53) and hospital costs ( P = .43) were similar to those of patients having off-pump procedures. Conclusions Performance of coronary artery bypass grafting among octogenarian patients is safe and effective. Off-pump coronary artery bypass confers shorter postoperative ventilation but equivalent mortality to conventional coronary artery bypass. Off-pump coronary artery bypass was associated with a reduction in the composite incidence of major complications in unadjusted and adjusted analyses and should be considered an acceptable alternative to conventional bypass for myocardial revascularization in elderly patients.
Coronary-artery bypass grafting (CABG) surgery may be performed either with cardiopulmonary bypass (on pump) or without cardiopulmonary bypass (off pump). We report the 5-year clinical outcomes in ...patients who had been included in the Veterans Affairs trial of on-pump versus off-pump CABG.
From February 2002 through June 2007, we randomly assigned 2203 patients at 18 medical centers to undergo either on-pump or off-pump CABG, with 1-year assessments completed by May 2008. The two primary 5-year outcomes were death from any cause and a composite outcome of major adverse cardiovascular events, defined as death from any cause, repeat revascularization (CABG or percutaneous coronary intervention), or nonfatal myocardial infarction. Secondary 5-year outcomes included death from cardiac causes, repeat revascularization, and nonfatal myocardial infarction. Primary outcomes were assessed at a P value of 0.05 or less, and secondary outcomes at a P value of 0.01 or less.
The rate of death at 5 years was 15.2% in the off-pump group versus 11.9% in the on-pump group (relative risk, 1.28; 95% confidence interval CI, 1.03 to 1.58; P=0.02). The rate of major adverse cardiovascular events at 5 years was 31.0% in the off-pump group versus 27.1% in the on-pump group (relative risk, 1.14; 95% CI, 1.00 to 1.30; P=0.046). For the 5-year secondary outcomes, no significant differences were observed: for nonfatal myocardial infarction, the rate was 12.1% in the off-pump group and 9.6% in the on-pump group (P=0.05); for death from cardiac causes, the rate was 6.3% and 5.3%, respectively (P=0.29); for repeat revascularization, the rate was 13.1% and 11.9%, respectively (P=0.39); and for repeat CABG, the rate was 1.4% and 0.5%, respectively (P=0.02).
In this randomized trial, off-pump CABG led to lower rates of 5-year survival and event-free survival than on-pump CABG. (Funded by the Department of Veterans Affairs Office of Research and Development Cooperative Studies Program and others; ROOBY-FS ClinicalTrials.gov number, NCT01924442 .).
Background
An increasing number of surgeons worldwide are now performing one anastomosis/mini gastric bypass (OAGB/MGB). Lack of a published consensus amongst experts may be hindering progress and ...affecting outcomes. This paper reports results from the first modified Delphi consensus building exercise on this procedure.
Methods
A committee of 16 recognised opinion-makers in bariatric surgery with special interest in OAGB/MGB was constituted. The committee invited 101 OAGB/MGB experts from 39 countries to vote on 55 statements in areas of controversy or variation associated with this procedure. An agreement amongst ≥ 70.0% of the experts was considered to indicate a consensus.
Results
A consensus was achieved for 48 of the 55 proposed statements after two rounds of voting. There was no consensus for seven statements. Remarkably, 100.0% of the experts felt that OAGB/MGB was an “acceptable mainstream surgical option” and 96.0% felt that it could no longer be regarded as a new or experimental procedure. Approximately 96.0 and 91.0% of the experts felt that OAGB/MGB did not increase the risk of gastric and oesophageal cancers, respectively. Approximately 94.0% of the experts felt that the construction of the gastric pouch should start in the horizontal portion of the lesser curvature. There was a consensus of 82, 84, and 85% for routinely supplementing iron, vitamin B
12
, and vitamin D, respectively.
Conclusion
OAGB/MGB experts achieved consensus on a number of aspects concerning this procedure but several areas of disagreements persist emphasising the need for more studies in the future.
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