"it also has less severe bowel issues and likely require less supplementation"
I have not seen any proof of this statement in the literature. However, I am QUITE sure it allows less fat consumption (fat being very satiating as well as delicious), and will be less effective in the long run.
There is not a SINGLE paper comparing the outcomes of SADI vs. DS - I wonder why?
http://www.ncbi.nlm.nih.gov/pubmed/?term="single+anastomosis"+duodenal
Yet there is a clinical trial that was initiated in
2009 - for which not a single result has been reported:
https://clinicaltrials.gov/ct2/show/NCT01685177
"
Single Anastomosis Duodeno-Ileal Bypass vs Standard Duodenal Switch as a Second Step After Sleeve Gastrectomy in the Super-Morbid Obese Patient (SADI vs CD)"
"Hypothesis of the study is that Single-Anastomosis Duodeno-Ileal bypass behaves at least equally to standard duodenal switch as a second step after sleeve gastrectomy in the super-morbid patient. Secondary aims are to demonstrate that single-anastomosis duodeno-ileal bypass is simpler to perform, quicker and has less postoperative short, mid and long-term complications."
Gee, I wonder why no results reported?
There is, however, a position statement currently being worked on by the ASMBS - it is not publicly available; however, just the first page of the draft in progress can be seen here (
http://www.sciencedirect.com/scienc...0d9b9a8aab4a1413f4e1c&ie=/excerpt.pdf target=). I think you can tell what they are going to say from the part of the last paragraph that IS available:
"There are currently 4 published studies on single-anastomosis DS procedures (prospective or retrospective case series) with 222 total patients (including second-stage patients) with follow-up from 18 months to 5 years [3–6]. Three of the 4 studies are from a single institution representing a single ongoing consecutive series on the SADI-S that is included in the Clinicaltrials.gov Protocol Registration System. The fourth study compared the LDS modification with a matched gastric bypass cohort. Both sites involved surgeons already experienced with performing standard laparoscopic DS procedures.
Given the lack of any randomized or prospective comparative data and the limited data regarding long-term nutritional effects, however, there is insufficient evidence to draw any definitive ..."
I would not want to be anyone's guinea pig.
Here's another point of view:
http://www.dsfacts.com/pdf/bariatric-surgery-book-chapter-published-1467041305.pdf
SADI- SIPS
Single Anastomosis Duodeno-Ileostomy (SADI) and Stomach Intestinal Pylorus-Sparing (SIPS) surgeries are NOT the same as the Duodenal Switch (DS) operations. Any suggestions that the SADI or the SIPS procedures are the same as DS is misleading and inaccurate. SADI and SIPS procedures have evolved recently primarily in response to the high failure rate of all other weight loss surgical procedures. An easier alternative to DS was sought and SIPS-SADI was born; now this procedure has been misrepresented to be the same as the DS. The only similarity anatomically is the presence of the pyloric valve as a functional part of the post-surgical anatomy. The small bowel portion of the SIPS-SADI is unlike that of the DS. In DS operations, the absorption of the fat is primarily limited to the common channel, which is usually 10% of the total length (if the surgeon performing the duodenal switch bases the common and alimentary limb lengths as a percentage of the total length). This number is much closer to 40-50% in the SIPS-SADI procedure. Additionally, bile reflux, internal hernia, inadequate weight loss and even weight regain, are all possible complications much more likely than that with DS. The revision of the SADI-SIPS is possible, but not as simple as some suggest. The length of the small bowel, location of the anastomosis in relation to the colonic mesentery, length of the duodenal, are all factors in dictating how easy or difficult the revision of the SADI-SIPS to DS will be [17,18].
It is critical that patients are very well informed (informed consent) as to the exact operation that is being performed on them. As stated above, Duodenal Switch operation is not the same as SADI or SIPS. The notion that they can be interchangeable is anatomically, and medically inaccurate.