There are classic criteria to determine who are and who are not candidates for bariatric surgery. These, however, are somewhat old because they date back to the year 1991. These criteria consider candidates for those patients who have what is called "obesity m & oacute; rbida", this is a mass index Body (BMI) greater than 40. The BMI is a way we have to establish what the patient's weight situation is. This is equal to the weight divided by the squared size.
But there is also a second group of candidates for bariatric surgery, which are those patients with a BMI between 35 and 40 (severe obesity) whose overweight is Associated with an important disease that increases the risks, for example diabetes, coronary diseases and others.
It should be noted, however, that these criteria have changed markedly with the passage of time, at the rate of progress in research, and knowing more and more implications of obesity in terms of future risks for life expectancy. The current techniques are much less invasive, with early recovery, with average hospitalization of 48 hours, with small incisions, and with procedures of around one hour in duration. This has led to more and more patients being operated with degrees of obesity less extreme than backwards. P>