Changes in the lipid profile 5 years after bariatric surgery: laparoscopic Roux-en-Y gastric bypass versus laparoscopic sleeve gastrectomy.

BACKGROUND

Few studies have compared mid-term results of laparoscopic Roux-en-Y gastric bypass (LRYGB) versus laparoscopic sleeve gastrectomy (LSG), and none have focused on lipid profile.

OBJECTIVES

To compare LRYGB versus LSG with respect to lipid disturbance evolution and remission at mid-term after bariatric surgery (BS) and to assess associated factors with the remission of lipid disturbances at 5 years.

SETTING

Hospital del Mar, Barcelona, from January 2005 to January 2012.

METHODS

A retrospective analysis of a nonrandomized, prospective cohort was conducted on patients undergoing BS at Hospital del Mar, Barcelona, from January 2005 to January 2012 with ≥5 years' follow-up.

RESULTS

Of 259 patients, 151 (58.3%) completed the 5-year follow-up. The proportion of patients who achieved normal low-density lipoprotein cholesterol levels at 5 years post-LRYGB was greater than after LSG (30/49 [61.2%] versus 6/23 [26.1%]; P = .005), being male sex, absence of statins treatment, and type of BS technique (LRYGB) the associated factors with remission. Hypertriglyceridemia remission was also higher after LRYGB (23/25 [92.0%] versus 10/15 [66.7%]; P = .041), although type of surgery was not an associated factor. No differences were found in remission rates of low high-density lipoprotein cholesterol between groups. Absence of fibrates treatment and 5-year percentage of excess weight loss were independently associated with hypertriglyceridemia remission, and only the latter was independently associated with low high-density lipoprotein cholesterol remission 5 years after surgery.

CONCLUSIONS

Five-year outcome data showed that, among patients with severe obesity undergoing BS, LRYGB was associated with a higher total and low-density lipoprotein cholesterol reduction and remission in comparison to LSG, with no differences in hypertriglyceridemia and high-density lipoprotein cholesterol normalization.