Bariatric surgeries are a group of operations that are performed with the sole aim of achieving weight loss. Those that are commonly performed in New York include banding, sleeve gastrectomy and gastric bypass surgery. Weight loss is achieved through reduced food intake (as a result of early satiety), reduced absorption of nutrients or both. We will look briefly at what is involved in the bypass procedure.
As is the case with many other surgeries, the decision to undergo the procedure is made collectively by the surgeon and the client. The advice of experts is that bariatric surgeries should be considered only after all the conservative options have been tried out. Such may include, for example, making dietary changes and engaging in physical exercise regularly for at least six months. The only exception is when a lot of fat has to be lost in a short span of time.
The candidate undergoing gastric bypass should ideally have a body mass index (BMI) of at least 40. If the BMI value is less than this then the benefits may not be that much. For persons that have weight related complications such as high blood pressure, diabetes and sleep apnea, the BMI cut-off value has been set at 35.
The preparation require for the surgery resembles what happens for other major operations. A number of tests have to be conducted to establish that the candidate is ready to be operated on. Some of the most helpful tests at this point in time include hemogram (or full blood count) and renal function tests. There is also a need to stop drugs that may increase the risk of bleeding such as anticoagulants.
There are two main techniques that are employed in performing this operation. The commoner of the two is known as Roux-en-Y. It is a technique that permits the performance of the surgery through a small opening which reduces the rate of complications and improves the recovery time. The stomach is first reduced in size through stapling or banding and then joined to Y-shaped part of intestines. The first and second intestinal portions are usually bypassed.
Weight loss due to this technique occurs due to a number of mechanisms. A reduction in the stomach size means that you will experience early satiety and a general reduction in the amount of food that is eaten. Another mechanism involved is the reduction in the surface area that is available for absorption of nutrients mainly due to the rerouting of digested food.
The second alternative is what is termed extensive gastric bypass. This is a more radical approach that is mainly used in the event of biliary obstruction resulting from liver disease. It is for this reason that the procedure is sometimes called biliopancreatic diversion. The surgery itself involves the removal of the lower stomach portion and joining the upper portion to the lower part of the small intestines.
There are several complications that may be encountered. The commonest is malnutrition resulting from reduced absorption of nutrients. Dumping syndrome is also fairly common and may be seen in the immediate term or after some years. It is characterized by sweating, nausea, vomiting and weakness whose onset follow the intake of food.
As is the case with many other surgeries, the decision to undergo the procedure is made collectively by the surgeon and the client. The advice of experts is that bariatric surgeries should be considered only after all the conservative options have been tried out. Such may include, for example, making dietary changes and engaging in physical exercise regularly for at least six months. The only exception is when a lot of fat has to be lost in a short span of time.
The candidate undergoing gastric bypass should ideally have a body mass index (BMI) of at least 40. If the BMI value is less than this then the benefits may not be that much. For persons that have weight related complications such as high blood pressure, diabetes and sleep apnea, the BMI cut-off value has been set at 35.
The preparation require for the surgery resembles what happens for other major operations. A number of tests have to be conducted to establish that the candidate is ready to be operated on. Some of the most helpful tests at this point in time include hemogram (or full blood count) and renal function tests. There is also a need to stop drugs that may increase the risk of bleeding such as anticoagulants.
There are two main techniques that are employed in performing this operation. The commoner of the two is known as Roux-en-Y. It is a technique that permits the performance of the surgery through a small opening which reduces the rate of complications and improves the recovery time. The stomach is first reduced in size through stapling or banding and then joined to Y-shaped part of intestines. The first and second intestinal portions are usually bypassed.
Weight loss due to this technique occurs due to a number of mechanisms. A reduction in the stomach size means that you will experience early satiety and a general reduction in the amount of food that is eaten. Another mechanism involved is the reduction in the surface area that is available for absorption of nutrients mainly due to the rerouting of digested food.
The second alternative is what is termed extensive gastric bypass. This is a more radical approach that is mainly used in the event of biliary obstruction resulting from liver disease. It is for this reason that the procedure is sometimes called biliopancreatic diversion. The surgery itself involves the removal of the lower stomach portion and joining the upper portion to the lower part of the small intestines.
There are several complications that may be encountered. The commonest is malnutrition resulting from reduced absorption of nutrients. Dumping syndrome is also fairly common and may be seen in the immediate term or after some years. It is characterized by sweating, nausea, vomiting and weakness whose onset follow the intake of food.
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