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01-11-2016 | Original Contributions

Usefulness of Baltasar’s expected body mass index as an indicator of bariatric weight loss surgery

Authors: Alicia Molina López, Fàtima Sabench Pereferrer, Margarida Vives Espelta, Anna Bonada Sanjaume, Santiago Blanco Blasco, Esther Raga Carceller, Mercè Hernández González, Antonio Sánchez Marín, Jordi Salas Salvadó, Daniel Del Castillo Déjardin

Published in: Obesity Surgery | Issue 11/2016

Abstract

Introduction

Determining the best indicator to report weight loss takes on special relevance following bariatric surgery. Our objective is to apply a method proposed by Baltasar et al. to express weight loss results following bariatric surgery.

Materials and methods

Anthropometric data were collected from 265 patients who had undergone Sleeve gastrectomy (SG, n = 172) and Roux-en-Y gastric bypass (RYGBP, n = 93) with a 2-year follow-up period. Initial BMI was calculated as well as BMI 2 years after, percentage of excess BMI loss (PEBMIL), expected BMI (EBMI), and corrected PEBMIL.

Results

In SG group, average BMI 2 years after surgery fell within a 95 % CI of expected BMI, with an average BMI of 31.58 ± 4.05 kg/m² in 35–45 BMI group, an average BMI of 33.62 ± 4.96 kg/m² in 45–55 BMI group, and an average BMI of 37.40 ± 5.93 kg/m² in 55–65 BMI group. In RYGBP group, average BMI 2 years after the surgery was below than average expected BMI (28.76 ± 3.20 kg/m² in 35–45 BMI group and 29.71 ± 3.30 kg/m² in 45–55 BMI group). Results are considered excellent for the group with an initial BMI of above 45 kg/m².

Conclusions

EBMI is a good weight loss indicator, mainly when 95 % CI is taken into account. EBMI is consistent with the results obtained 2 years after surgery in our patients who underwent SG and RYGBP. Corrected PEBMIL is a good indicator for expressing the percentage of BMI loss and offers more realistic values than conventional formula with a cut-off point of 25 points.

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Title: Usefulness of Baltasar’s expected body mass index as an indicator of bariatric weight loss surgery
Authors: Alicia Molina López
Fàtima Sabench Pereferrer
Margarida Vives Espelta
Anna Bonada Sanjaume
Santiago Blanco Blasco
Esther Raga Carceller
Mercè Hernández González
Antonio Sánchez Marín
Jordi Salas Salvadó
Daniel Del Castillo Déjardin
Publication date: 01-11-2016
Publisher: Springer US
Published in: Obesity Surgery / Issue 11/2016
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI: https://doi.org/10.1007/s11695-016-2163-7

At a glance: The STEP trials

Springer Medicine

Usefulness of Baltasar’s expected body mass index as an indicator of bariatric weight loss surgery

Abstract

Introduction

Materials and methods

Results

Conclusions

At a glance: The STEP trials

Springer Medicine

Abstract

Introduction

Materials and methods

Results

Conclusions

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