
Conversion of Sleeve to RNYGB
In Frankfurt / Main
A new operation in the event of inadequate weight loss or other complications
Gastric sleeve surgery does not always lead to the desired success. Sometimes weight loss falls short of expectations or symptoms such as persistent reflux occur. In these cases, conversion to a Roux-en-Y Gastric Bypass (RNYGB) can be a sensible solution.
This method combines a reduction in stomach volume with a rerouting of the small intestine, which influences both food intake and metabolism. In addition to helping with weight management, the procedure can also have a positive effect on metabolic diseases such as type 2 diabetes. Our team will provide you with comprehensive support to ensure that the changeover is successful.

How the conversion from Sleeve to Gastric Bypass works
The procedure is minimally invasive and performed under general anesthesia and usually takes around 2 hours. Patients are usually hospitalized for 3 to 5 days in order to closely monitor the healing process.
At our Medical Center, your general surgeon Hristo Nikolaev Kolev will plan the procedure individually and also provide you with aftercare. The aim is to promote sustainable weight loss and alleviate discomfort.
As we run a private clinic, treatment is offered to those with statutory health insurance as a self-pay service. Of course, we will inform you in advance of all costs incurred.
1. Preparation:
Before the operation, comprehensive medical examinations, explanatory
discussions and a change in diet are carried out to ensure the best possible
preparation for the procedure.
A gastroscopy is also required. Please send us the corresponding findings report.
2. Procedure:
The previous tube stomach is remodeled and a connection to the small
intestine is created, allowing food to take a shortened digestive route.
3. Stitching & control:
The new connection is precisely closed to ensure safe healing.
4. Recovery phase:
After surgery, you will be monitored in the recovery room before being
hospitalized for 3–5 days, for which there is an additional cost.
5. Long-term support:
Regular medical check-ups, nutritional advice and the targeted intake of
nutritional supplements are extremely important for sustainable weight loss.
FAQ about converting Sleeve to the RNYGB
It is important to us that you go into the operation safe and well-informed. Here you will find initial answers to your questions about the conversion from Sleeve to RNYGB, from nutrition to the physical effects of this surgical procedure.
When is it sensible to convert from Sleeve to RNYGB?
How does the Roux-en-Y Bypass differ from the original Sleeve?
How long does recovery take after conversion?
What risks are associated with a conversion?
What dietary changes are necessary after the operation?
What effects does the procedure have on metabolism?
How long will it take before I can eat normally again?
Is vitamin absorption affected by the conversion?
Our blog for more balance!
Bariatric surgery can be an important step – but other factors are also important for long-term success. In our blog, you will find information about our procedures and a healthy lifestyle before and after treatment.