الفهرس 
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Abstract
Background: Bariatric surgery has been shown to be the most successful approach in managing morbid obesity that can achieve and sustain great weight loss for a long period. Such surgeries, which adopt restrictive, malabsorptive, or mixed procedures, have shown to achieve good and promising results in weight loss. However, such procedures necessitate lifelong medical supervision with the supplementation of vitamins and nutrients. Moreover, these are frequently associated with dysphagia and vomiting as a result of anatomical restrictions, and can lead to serious metabolic disorders.
Aim of the Work: To compare preliminary outcomes between single anastmosis sleeve ileal bypass and mini-gastric bypass at one year, as regards to their effects on hemoglobin, albumin, calcium and Folate.
Patients and Methods: This is A prospective comparative study was conducted in Eldmerdash Hospital and El Sahel Teaching Hospital including 60 patients who will undergo bariatric surgery. Patients will be divided into two groups: either (group I) or (group II). The two groups had the same indications for surgery.
Results: A significant BMI reduction was observed in both groups at 1, 6 and 12 months of the follow-up. The mean BMI values were significantly lower in the group 1 compared to group 2 during the whole follow-up, but the differences in %EWL were not significant. At 1, 6 and 12 months postoperatively, there was no significant difference between groups in haemoglobin, albumin, calcium and folic acid levels.
Conclusion: The preoperative nutritional status is indicative for the incidence and time of onset of post-operative deficiencies which can contribute to optimal nutritional follow-up. Standard supplementation decreases the incidence of post-operative deficiencies.