Using mean data from the validation study , the trend and directionality in risk was similar in the Roux-en-Y group .
In conclusion , bariatric surgery predicts long-term decreases in CV risk in obese patients
Obese patients have an increased prevalence of  cardiovascular ( CV ) risk factors , which improve with bariatric surgery , but whether bariatric surgery reduces long-term CV events remains ill defined .
Gastric bypass surgery for severe obesity: what can be achieved?
BACKGROUND As severe obesity becomes an increasing problem , it is important that the role of surgery in the management of the condition becomes better understood and recognised . This study reports the outcome of a large series of gastric bypass operations performed for severe obesity by a single surgeon . METHODS AND RESULTS Between 1990 - 2002 , 310 patients underwent gastric bypass surgery with all data being collected prospect ively and recorded on a computerised data base .  Mean preoperative weight and percentage excess weight were 132 kg and 119 % , respectively . There was no 30-day mortality and only one life threatening complication . Re-operations were required in 43 patients , most of which were related to ring removal or staple line disruption seen in the earlier form of gastric bypass . These problems are largely overcome with the currently performed technique . Percentage excess weight loss at 1 , 2 , 3 , 4 and 5 years was 73 % , 73 % , 66 % , 64 % , and 59 % respectively . Forty-nine of the 52 patients with type 2 diabetes were cured following surgery and 87 % of those with hypertension resolved or improved their condition . Dyslipidaemia resolved or improved in 87 % and asthma was cured or improved in 89 % of those affected . 61 patients had symptoms of obstructive sleep apnoea prior to surgery and in 51 of these symptoms resolved following surgery . CONCLUSION This study confirms that gastric bypass is a very effective treatment for severe obesity  and can be performed with a high level of safety . Gastric transection is an important component of the operation . The majority of important comorbidities seen before surgery either resolve or improve following surgery . Bariatric surgery is establishing itself as a very important and satisfying branch of upper gastrointestinal ( GI ) surgery
Using mean data from the validation study , the trend and directionality in risk was similar in the Roux-en-Y group .
In conclusion , bariatric surgery predicts long-term decreases in CV risk in obese patients
Obese patients have an increased prevalence of  cardiovascular ( CV ) risk factors , which improve with bariatric surgery , but whether bariatric surgery reduces long-term CV events remains ill defined .