Bariatric gastric sleeve FAQs | Cirugia de adelgazamiento

Frequently asked questions

What medicines should I take after the surgical intervention?

You should be taking exactly the same medicines that you were taking before the intervention although sometimes it’s necessary to adjust either their dose or their presentation as the person loses weight.

Some drugs might become unnecessary for the patients as the diseases associated to obesity (diabetes, arterial hypertension) disappear.

Vitamin and mineral (iron) complexes are usually prescribed for the first 12-18 months and later on are suspended if the patient has healthy feeding habits. Other times gastric protectors, light laxatives and fiber are required…

Surgery effects on weight

When simple techniques are used weight loss accounts to 30% of the initial weight (30-40 Kg) whereas when using the complex ones 40-50% of the initial weight (50-60 Kg) can be lost although the results vary depending on the patient.

Generally speaking men and young people lose more weight.   Maximum weight loss occurs 18 months after surgery. Sometimes patients experienced a slight regaining of weight (between 5 and 8 kilos) two years after the surgery.

It should be noted that surgery success depends to a greater extent on diet and exercising after the intervention. Changing life habits it’s imperative.


If all the above mentioned issues are accomplished the surgery will have been a success, not only with regards to the weight loss but also with regards to the most important, most of the diseases that are associated to obesity, as theses diseases might disappear. The patient will also improve its mobility, resistance, self esteem, mood, personal relationships, work capacity, couple relationship, etc.

What should I eat after the intervention?

After the surgery your stomach capacity will be been diminished to a greater extent. Therefore you should get used to eat very small portions of food and to eat frequently. It will take several months for you to be adapted to your new feeding pattern

At first you will only take liquids (4-6 weeks), then you will take mashed food or thick soups and finally you will be able to take solids. Six months after the intervention you will be able to take nearly every type of food.

You shouldn’t forget that food tolerance and adaptation period vary depending on the patients. The most difficult is to eat certain food such as meet, bread, rice, vegetables and fiber.

n any case you should reduce calorie intake in order to lose weight.  Thanks to the intervention it will be easy for you to lose weight without being hungry  and without regaining weight for a long time.  But you should remember that if you eat too much food rich in calories (cakes, chocolates) it’s going to be difficult for you to lose all the weight that you want.

Working and exercising after the surgery, recommendations

You will be able to do your daily activities progressively.  Once three weeks after the intervention have passed you will be able to drive.

During the first weeks after the surgery you shouldn’t make efforts or lift weight. Six weeks after the surgery the wound is healed and you could do normal activity (go back to work). It’s necessary to start a regular exercise program 4-6 weeks after the surgery so that the weight loss is promoted.

You can start walking, swimming or cycling. It’s convenient to start bit by bit, round 30 minutes a day as a start.

Why do I have hair loss after the treatment?

It occurs in some patients and it might be associated with a low intake of proteins or vitamins and in some other cases it’s due to the weight loss.  Hair loss is these cases is transitory and your hair will grow again with time.

Why do some patients vomit after the surgery?

Sometimes it happens but this is something that we can control. We have to check our diet and avoid eating too fast, avoid taking too dry food, chew adequately, eat slowly, avoid taking liquids during the meals and grind the food that you tolerate worse during some months after the intervention (meet…) .

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When can I start walking?

Immediately. 24 hours after surgery you will start wandering and at discharge, you can take short walks until you increase the time and get to walk 1 hour a day. Don’t forget that diet and exercise are the keys to success after surgery.

When can I eat a normal diet?

After the first 6-8 weeks. The main difference will be the size of the intake, you will not be able to eat large rations but small amounts with which you will be satisfied soon, and you should spread the intakes in 5-6 daily.

Why can’t I take foods high in fat or sugar after surgery?

Because they give you a lot of calories and little nutritional value. Your stomach has little capacity and every calorie you eat has to provide the nutrients you need.

In addition, fats and sugars are worse tolerated and can cause

symptoms such as nausea, vomiting or diarrhea..

The radical change in the erroneous food habits that led to obesity is critical. The diet should be proteins rich and we will also need to ingest liquids to maintain proper hydration.

When will the stitches be taken from my wounds?

About ten days after the surgery

What is dumping syndrome?

These are a number of symptoms that can occur after gastric bypass and occur
when we eat carbohydrate-rich foods (sugars) that pass very quickly from the small stomach to the intestine, nausea, dizziness, diarrhea occur.

It does not occur frequently and in the case of occur it has treatment by modification of the diet or medicines.

Should I lose weight before surgery?

In some cases, weight loss is recommended through a low-calorie diet two weeks prior to surgery to decrease abdominal fat and liver size and facilitate surgery.

How long will I be hospitalized?

4 days approximately

What can I do if I have constipation?

You will need to increase fiber and liquid consumption and if that is not enough you can resort to a mild laxative.

What can I do if I have gas or diarrhea?

Some patients develop these symptoms due to lactose intolerance (milk contained) and can be avoided by taking lactose-free products.

Will I have skin flaps when I lose weight?

Flaps are a consequence of fat loss, it is not always necessary
treat them but if necessary they will be treated with plastic surgery but not before a year after the surgery. Flaps may need to be removed in abdomen, breasts, thighs, or arms.

How will the follow-up be?

It will be carried out in consultation by both the surgeon and the endocrinologue-nutricionist.

The first year will take place ten days after the surgery, 3 months, 6 months and
12 months.

An annual check will be made from the year on. The controls will adjust the
medication (vitamins, minerals) and complete analitica, and where necessary, radiological controls will be requested.


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