Weight loss operations are also known as bariatric operations. They work by limiting the amount of food one can consume hence are also referred to as restrictive surgeries. The main types that are offered in New York include sleeve gastrectomy, gastric bypass surgery and gastric banding. While there are some differences in the way in which each of them is done the end result is more or less the same. In this article we look at the important aspects of the bypass surgery.
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 steps that are involved in preparing for this operation are more or less the same as those involved in other surgeries. One needs to be subjected to a number of tests to determine whether they are fit enough to have the surgery. Some of the important tests conducted routinely include renal function tests and a full blood count. Some drugs such as aspirin and anticoagulants increase the risk of bleeding and should be stopped before the operation.
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.
In the case of Roux-en-Y, weight loss will be achieved due to a number of reasons. The small size of the stomach can only allow one to eat a limited amount of food most of which is used in the provision of energy. The other effect of this operation is that the surface area available for absorption of nutrients is markedly reduced due to the bypass of a large section.
The second type is called extensive gastric bypass. As the name suggest, this technique is quite radical. In this technique, the lower part of the stomach is cut and discarded and the remaining upper part joined to the last segment of intestines which means that a large segment is bypassed. Since it is mostly considered when there is biliary obstruction, it is also known as biliopancreatic diversion surgery.
Reduction in the absorption of essential nutrients is a common complication. This is mostly seen when extensive bypass is performed. Another possible complication both in the short term and long term is a condition popularly referred to as dumping syndrome. The features of dumping syndrome include sweating, weakness, vomiting and nausea. These symptoms are usually experienced a few minutes after eating due to rapid food movement.
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 steps that are involved in preparing for this operation are more or less the same as those involved in other surgeries. One needs to be subjected to a number of tests to determine whether they are fit enough to have the surgery. Some of the important tests conducted routinely include renal function tests and a full blood count. Some drugs such as aspirin and anticoagulants increase the risk of bleeding and should be stopped before the operation.
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.
In the case of Roux-en-Y, weight loss will be achieved due to a number of reasons. The small size of the stomach can only allow one to eat a limited amount of food most of which is used in the provision of energy. The other effect of this operation is that the surface area available for absorption of nutrients is markedly reduced due to the bypass of a large section.
The second type is called extensive gastric bypass. As the name suggest, this technique is quite radical. In this technique, the lower part of the stomach is cut and discarded and the remaining upper part joined to the last segment of intestines which means that a large segment is bypassed. Since it is mostly considered when there is biliary obstruction, it is also known as biliopancreatic diversion surgery.
Reduction in the absorption of essential nutrients is a common complication. This is mostly seen when extensive bypass is performed. Another possible complication both in the short term and long term is a condition popularly referred to as dumping syndrome. The features of dumping syndrome include sweating, weakness, vomiting and nausea. These symptoms are usually experienced a few minutes after eating due to rapid food movement.
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