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Frequently asked questions






Questions in the doctor’s office


  • How is the type of surgery performed decided?
  • How important is age?
  • How is obesity graded?
  • What is Morbid Obesity?
  • How do you know which procedure is right for you?
How is the type of surgery performed decided?

Based on age, degree of obesity, family history, accompanying diseases, occupation and the individual wishes of the patient.

How important is age?

For younger patients, we suggest choosing a more definitive procedure like Gastric Bypass that would work throughout one’s entire life. In older patients with preexisting conditions to consider, choosing an intermediate procedure like VSG is a good idea. In the case of patients with serious operative risks, we suggest opting for a more temporary procedure like the intragastric balloon for 6 months to improve clinical conditions.

How is obesity graded?

The degree of obesity is established based on weight, divided by height, in centimeters squared and is known as Body Mass Index (World Health Organization).

Classification IMC (kg/m2)
Normal 18.5 a 24.9
Overweight 25 a 30
Grade Obesity I (mild) 30 a 34.9
Grade II obesity 35 a 39.9
Grade III obesity Más de 40
SUPEROBESITY INDEX EXCEEDS 50
What is Morbid Obesity?

A patient with grade II obesity or a BMI of more than 40, combined with Diabetes Mellitus Type 2, elevated cholesterol and / or triglycerides, or other conditions. BMI and Blood Pressure diseases are the precise factors for a candidate of Obesity Surgery.

How do you know which procedure is right for you?

A grandes rasgos:

Obesity Process
Obesity Grade I and II Intragastric balloon
Grade II obesity with Comorbidities Sleeve or Gastric Bypass
Grade III obesity Gastric bypass
Superobesity (IMC >50) Intragastric Ballon or Pre-Gastric Bypass

Use this chart with some reservation, since each patient should be treated individually and in accordance to the state of health at the time of their intervention.

Questions before surgery


  • How I do I know if I’m a candidate for Obesity Surgery?
  • What requirements must I meet?
  • How old do I have to be?
  • What other tests do I need to complete before surgery?
How I do I know if I’m a candidate for Obesity Surgery?

If you have body mass index (BMI) of 40 or more, or a BMI of 35 and some associated disease(s) such as high blood pressure, diabetes mellitus, high cholesterol or triglycerides, sleep apnea and / or cardiological problems due to obesity.

What requirements must I meet?

You must comply with pre-op testing and checks including a cardiological assessment which will decide if you are acceptable for intervention, and a psychological and nutritional interview according to the Mexican Official Standard for the Treatment of Obesity.

How old do I have to be?

18 or older as long as there are no cardiac complications

What other tests do I need to complete before surgery?

Preoperative laboratories include a full blood count to rule out blood disorders and clotting. Blood chemistry for evaluating glycemia (blood sugar levels) and kidney function. Blood type and liver function tests, and of course your general nutritional status.

Abdominal ultrasounds to rule out cholelithiasis, and an evaluation of the liver and stomach for tumors. X-rays to assess the lungs, esophagus, and a series of gastro duodenal to investigate the intestinal tract, or an endoscopy to evaluate the anatomy of the digestive tract.

An electrocardiogram for the evaluation of the heart and lung function and a required stress test.

Questions about the Surgery


  • What are the risks of surgery?
  • What kind of anesthesia will I have?
  • How long is the operation?
  • What kind of surgery will be performed?
  • Will I have pain?
  • How many days will I be in the hospital?
What are the risks of surgery?

All major surgeries carry risks. However, risks are in direct relation to the overall status of the patient, their metabolic control, and preoperative evaluation by the cardiologist.

What kind of anesthesia will I have?

The selected anesthesia is based on your individual health, but most patients require intravenous, general anesthesia. Sedation is used for the insertion of the intragastric balloon.

How long is the operation?

On average 3 hours .

What kind of surgery will be performed?

In general, laparoscopic or minimally invasive surgery is used unless the patient’s life is at risk, then the doctor can choose a more conventional surgery.

Will I have pain?
During surgery no, because you are anaesthetized. The postoperative analgesic helps manage any pain and will be handled through an IV.
How many days will I be in the hospital?

On average three days .

Post-Surgery Questions


  • How many days will I be unable to eat?
  • How long will I be disabled?
  • When can I begin to exercise after surgery?
How many days will I be unable to eat?

On average 24 hours, and after the radiological study. Liquids will be introduced during the 14 days after surgery and will evolve into broths and soups, porridge and eventually reach a normal diet in small amounts.

How long will I be disabled?

Anywhere from 7 to 14 days, depending on your previous physical conditional and work.

When can I begin to exercise after surgery?

In one week you can start with a walk, then a trot and evolve into cardiometabolic exercises. Muscle tone and fitness exercises can resume, on average, after the three months depending on the patient.

Prices and payment methods


  • How much does the surgery cost?
  • How is payment made?
  • Can I request an invoice?
How much does the surgery cost?

The cost of surgery is variable and depends mainly on the type of procedure performed and the hospital where it will be held.

The cost of surgery varies and depends mainly on the type of procedure performed and the hospital where it will be held.

To speak personally with Dr. Jesús Núñez about the actual costs of a particular surgery, please call his cell: (999) 9 00 59 05 or send an email to drnunez@bypassgastricomerida.mx.

Hospitals to choose from are:

  • Star Medica Hospital
  • Pensiones Medical Center
  • Endoscopy Unit
  • Hospital Vossan
How is payment made?
  • Payment may be made in cash or with any credit card, Visa or Master Card (except American Express). We also offer the ability to pay in 6, 9 and 12 month payments with interest using a Banamex credit card.
  • You can also pay by bank deposit or electronic transfer.
Can I request an invoice?

Of course, but you should ask for it with plenty of time in advance.

Dr. Jesús Núñez HernándezA

Especialista en Cirugía de Obesidad y Diabetes por Laparoscopía

CED. PROF. 1371863 UAT / CED. ESP. AE: 011111 UNAM


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