This is also referred to as Roux-en-Y gastric bypass (RYGB) or “lap bypass”. It is a restrictive and malabsorptive procedure. In patients who are not suitable for a sleeve gastrectomy, a roux-en-Y gastric bypass may be the best solution. It carries a slightly higher surgical complication risk than a gastric sleeve due to being a more complex surgery. After surgery, regular blood tests are required to ensure proper levels of nutrients, etc.