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Preoperative Nutritional Interventions in Morbid Obesity: Impact on Body Weight, Energy Intake, and Eating Quality

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Abstract

Background

Although the benefits of preoperative weight loss and adequacy of dietary patterns in bariatric surgery is well-recognized, the nutritional strategies in the preoperative period have been scarcely investigated. We aimed to evaluate the impact of intensive and standard nutritional interventions on body weight, energy intake, and eating quality.

Methods

This is a retrospective study in which 32 patients undergoing intensive nutritional intervention, with low-calorie diet (10 kcal/kg) and biweekly visits, were pair-matched by age, sex, and body mass index with 32 patients under a standard nutritional intervention, based on a general dietary counseling. Twenty-four-hour food recall was used to assess energy intake and to derive healthy eating index (HEI). The follow-up preoperative period varied from 8 to 16 weeks.

Results

Weight loss was observed in 72 % of the patients from the intensive intervention group and 75 % of the patients from the standard intervention group. According to the mixed model analysis, time effect on weight loss in both groups was significant (P = 0.0002); however, no difference was found between the intervention groups (P = 0.71). The time effect was significant in both groups for energy intake reduction as well (P < 0.0001), but no difference was found between the intervention groups (P = 0.25). Improvement of eating quality was expressed by the nutrient score of the HEI that increased significantly overtime (P = 0.02), also without distinction between the groups (P = 0.61).

Conclusion

Both intensive and standard nutritional interventions promoted weight loss, energy intake reduction, and improvement of eating quality in morbidly obese patients during preoperative period.

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Acknowledgments

The authors are grateful to Dr. Maria Ayako Kamimura for her invaluable contributions on the review of the manuscript. We also thank Cibele Neves Rios and Patrícia Regina Lima for their collaboration for data collection.

Conflict of Interest

The authors have no conflict of interest.

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Correspondence to Kênia Mara Baiocchi de Carvalho.

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Melendez-Araújo, M.S., de Matos Arruda, S.L., de Oliveira Kelly, E. et al. Preoperative Nutritional Interventions in Morbid Obesity: Impact on Body Weight, Energy Intake, and Eating Quality. OBES SURG 22, 1848–1854 (2012). https://doi.org/10.1007/s11695-012-0737-6

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  • DOI: https://doi.org/10.1007/s11695-012-0737-6

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