Abstract
Background
Bariatric surgery improves lipid profile. A still unanswered question is whether this improvement is merely weight-dependent or also results from factors inherent to specificities of the bariatric procedure. We aimed to study lipid profile 1 year after bariatric surgery and compare its changes between the different procedures in patients matched for initial weight and weight loss.
Methods
We retrospectively analysed patients submitted to Roux-en-Y gastric bypass (RYGB), adjustable gastric banding (AGB) or sleeve gastrectomy (SG) between 2010 and 2013. Patients were matched for age (±5 years), sex, pre-surgery body mass index (BMI) (±2 Kg/m2) and excess weight loss (EWL) (±5 %). Baseline and 1-year lipid profile, its variation and percentage of variation was compared between surgeries.
Results
We analysed 229 patients: 72 pairs RYGB-AGB, 47 pairs RYGB-SG and 33 pairs AGB-SG. The median age was 41 (35–52) years and 11.8 % were male. Pre-operative BMI was 44.0 ± 4.6 and 32.1 ± 4.4 Kg/m2 at 1 year. EWL at 1 year was 64.2 ± 18.9 %. There were no differences in baseline lipid profile between patients submitted to different types of bariatric surgery. At 1 year, high-density lipoprotein cholesterol (HDL) and triglycerides (TG) improved similarly with all surgeries. Total cholesterol (TC) and low-density lipoprotein cholesterol (LDL) at 1 year decreased significantly more in patients submitted to RYGB than in weight-matched patients undergoing AGB or SG.
Conclusions
RYGB is the only bariatric surgery that reduces TC and LDL in age-, sex-, BMI- and EWL-matched patients. All three procedures improved TG and HDL similarly when the confounding effect of weight loss is eliminated.
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Acknowledgments
We thank Dr. Patrícia Lourenço for all her precious help.
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The authors declare that they have no competing interests.
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Cunha, F.M., Oliveira, J., Preto, J. et al. The Effect of Bariatric Surgery Type on Lipid Profile: An Age, Sex, Body Mass Index and Excess Weight Loss Matched Study. OBES SURG 26, 1041–1047 (2016). https://doi.org/10.1007/s11695-015-1825-1
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DOI: https://doi.org/10.1007/s11695-015-1825-1