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GASTRIC SLEEVE VS.

DUODENAL SWITCH

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The duodenal switch also known as biliopancreatic diversion with duodenal switch (BPD-DS) is regarded as the most efficient, most complex and most complicated weight loss surgery. As a result, there has been a gradual decline in its performance as a treatment for obesity. It is now commonly done as a revision surgery when other operations have failed. Nevertheless, some morbidly obese patients may still want to choose it as a primary procedure. Gastric sleeve surgery used to be a component of BPD-DS, but it is now done as a stand-alone procedure for obesity. Both are effective in causing weight loss and improvement in obesity-associated conditions.

Which Procedure is Best? Quick Pros and Cons

  • Least Invasive: Gastric Sleeve Surgery
  • Highest Expected Weight Loss: Duodenal Switch
  • Lowest Complications: Gastric Sleeve Surgery
  • Lowest Side Effects: Gastric Sleeve Surgery
  • Lowest Cost (Typically): Gastric Sleeve Surgery
  • Highest Reduction in Comorbidities: Duodenal Switch

Renew Bariatrics recommends Gastric Sleeve Surgery for a majority of reasons, primarily that it provides sufficient expected weight loss, without high rates of complications or side effects.

Looking for top Gastric Sleeve Surgeons in Mexico? Contact us today learn more about our leading weight-loss surgeons and our results.

Gastric Sleeve vs Duodenal Switch

 Gastric Sleeve IllustrationDuodenal Switch Procedure Illustraiton
Gastric Sleeve SurgeryDuodenal Switch
Method of Weight LossRestrictiveRestrictive & Malabsorptive
Duration of Procedure1.5 Hour4 Hour
Length of Hospital Stay2 Nights2-3 Nights
Estimated Weight Loss65% of Excess Weight65-90% of Excess Weight
Weight Loss at 1 Year60-70%70%
ComorbiditiesHigh Resolved RateSignificant Resolved Rates
Hypertension Resolved68%43%
Diabetes Resolved55%92-100%
Migrations Resolved40%Major Improvements
GERD Resolved50%49%
Mortality0.1%0.3%
Asthma90%90%
Sleep Apnea62%85%
DepressionMost Resolved57%
Quality of Life Improved93%95%
Common ComplicationsStaple Line Leaks 0.5%N/A
Common Side EffectsNausea, Digestive IssuesGERD, Gallstone, Bowel Movement
Recovery2 to 4 Weeks2 to 4 Weeks
Cost: Self-Pay Average$18,000$30,000
Cost w/ Renew Bariatrics$3,899$7,499

Procedure/mechanism of action

While gastric sleeve is purely restrictive, BPD-DS goes a step further to add a malabsorptive component to the mechanism of inducing weight loss. Gastric sleeve involves the reduction in the size of the stomach by resecting (cutting away) about 80-90% of it. This leads to an early feeling of fullness during the meal and therefore reduction in calorie intake.

BPD-DS consists of gastric sleeve surgery with a malabsorptive component. The small intestine is refashioned in a way that allows the digestive enzymes from the pancreas and the bile to come in contact with the food at the lower end of the small intestine. As these digestive juices must act on the food before absorption can occur, most of the nutrients will not be absorbed.

Methods/duration of surgery

Both gastric sleeve and BPD-DS can be done by laparoscopic (where equipment with the camera is introduced into the abdomen through small incisions) or open approach. The duration of surgery is more prolonged for BPD-DS (297min vs. 107min). The average length of hospital stay is also longer after BPD-DS by approximately one day.

Cost of surgery/insurance coverage

Duodenal switch is more expensive than gastric sleeve surgery. The average cost of the duodenal switch in the United States is $25,000 ($23,000-$34,000) compared to the average price of gastric sleeve surgery of $15,000 ($12,000-$20,000). This is not unexpected as gastric sleeve surgery is one of the components of the duodenal switch. Cost is relatively lower outside the United States. While most insurance policies cover gastric sleeve surgery, only a few companies provide coverage for duodenal switch.

Results

The expected weight loss, the improvement in obesity-associated disease conditions, the risk of complications and death are different for these two surgeries.

Expected weight loss

Duodenal switch results in a higher percentage of excess weight loss than gastric sleeve surgery. While patients are expected to have lost an average of 59% of the excess weight at 18-24 months after gastric sleeve surgery, the percentage excess weight loss after the duodenal switch is 78% with little weight regain even after 15 years of operation. Sucandy et al. reported a higher percentage excess weight loss at 18 months after duodenal switch (79.6% vs. 64%).

Reversal of comorbid conditions

Due to the more significant weight loss that is associated with the duodenal switch, most patients tend to achieve a relatively lower body mass index (BMI) than their counterparts who underwent gastric sleeve surgery. Since lower BMI is associated with a higher resolution of comorbid conditions, it is therefore not surprising that more patients achieve reversal of their comorbidities such as type 2 diabetes mellitus, hypertension, dyslipidemia, osteoarthritis, etc. after duodenal switch than after gastric sleeve surgery.

Complications

All the complications of gastric sleeve surgery occur after duodenal switch. Also, the duodenal switch also leads to other complications that are related to the manipulation of the small intestine. Common complications to both are leakage from staple line, gastroesophageal reflux disease, bleeding from the staple line, intra-abdominal abscess, stricture, hair loss, etc. Those that are unique to duodenal switch are leakage from anastomotic sites, stricture at the anastomotic site, intestinal obstruction, ulcers, deep vein thrombosis (clotting of blood in the leg veins) with pulmonary embolism (obstruction of the blood vessels in the lungs by a blood clot), steatorrhea, etc. Nutritional deficiency is severe after duodenal switch. The risk of death after the duodenal switch is the highest among all bariatric surgeries and can be as high as 1.1%.

In summary, the comparison of different parameters of the duodenal switch and gastric sleeve surgery is shown in the table below:

Parameters

Duodenal switch (BPD-DS)

Gastric sleeve surgery

Mechanism of weight loss

Restrictive and malabsorptive

Restrictive

Duration of procedure

 

Shorter

Length of hospital stay

 

Shorter

Cost

 

Lower

Estimated weight loss

Higher

 

Reversal of comorbid conditions

Higher

 

Risk of complications

 

Lower (except heartburn)

Risk of death

 

Lower

In conclusion, gastric sleeve surgery is a component of duodenal switch. It has, however, gained popularity as a stand-alone surgical procedure for the treatment obesity. It is less effective, when compared with duodenal switch, as regard weight loss and reversal of comorbid conditions, but cheaper and safer. Duodenal switch is now commonly done as a revision surgery after other bariatric surgeries have failed but can also be done as a primary procedure in super-obese individuals. It has the highest complication rates and risk of death.

Bibliography

  • Sucandy I, Titano J, Bonanni F, Antanavicius G. Comparison of Vertical Sleeve Gastrectomy Versus Biliopancreatic Diversion. North American Journal of Medical Sciences. 2014;6(1):35-38. doi:10.4103/1947-2714.125865.
  • Bennett JMH, Mehta S, Rhodes M. Surgery for morbid obesity. Postgraduate Medical Journal. 2007;83(975):8-15. doi:10.1136/pgmj.2006.048868.
  • Pories WJ. Bariatric Surgery: Risks and Rewards. The Journal of Clinical Endocrinology and Metabolism. 2008;93(11 Suppl 1):S89-S96. doi:10.1210/jc.2008-1641.

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