From the Journals

Pre–bariatric surgery weight loss improves outcomes


Key clinical point: Weight loss before bariatric surgery boosts results.

Major finding: Patients who lost at least 8% of excess body weight had an average of 65.1% loss of excess weight at 12 months, compared with the 55.7% seen in those who did not.

Data source: Retrospective, single-center analysis (n = 355).

Disclosures: No source of funding was disclosed.

Source: Hutcheon DA et al. J Am Coll Surgeons. 2018 Jan 31. doi: 10.1016/j.jamcollsurg.2017.12.032.



Preoperative weight loss improves bariatric surgery outcomes, according to findings from a single-institution retrospective analysis. The weight loss came from following a 4-week low-calorie diet (LCD) and was of greatest benefit to patients who lost 8% or more of their excess weight. These patients had a greater loss of excess weight in the 12 months following surgery, as well as shorter average hospital length of stay.

The results appeared online in the Journal of the American College of Surgeons.

Preliminary studies indicated that short-term weight loss before surgery might reduce surgical complexity by reducing the size of the liver and intra-abdominal fat mass, but it remained uncertain what effect weight loss might have on long-term outcomes.

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