Obes Surg. 2006;16:1041-9
Ledoux S, Msika S, Moussa F et al.
BACKGROUND:
Gastric bypass (also called Roux-en Y bypass or RYGBP) is more efficient than adjustable gastric banding (AGB) in weight loss and relieving co-morbidities, but nutritional complications of each surgical procedure have been poorly evaluated.
METHODS:
A cross-sectional study was performed to compare nutritional parameters in 201 obese patients, who had been treated either by conventional behavioral and dietary therapy (CT, 110 patients) or by surgery, including 51 by AGB and 40 by RYGBP.
RESULTS:
BMI was similar after AGB (36.6) and RYGBP (35.4), but patients in the RYGBP group had lost more weight. On the other hand, the prevalence of nutritional deficits was significantly higher in the RYGBP group than in the 2 other groups , whereas the AGB group did not differ from CT. Particularly, the RYGBP group presented an unexpected high frequency of deficiencies in fat-soluble vitamins. Moreover, vitamin B(12), hemoglobin, and concentrations of substances related to kidney function were low in the RYGBP group.
CONCLUSION:
RYGBP is more efficient than AGB in correcting obesity, but this operation is associated with a higher frequency of nutritional deficits that should be carefully monitored.
