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Vol. 88. Núm. 2.
Páginas 103-109 (Agosto 2010)
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Vol. 88. Núm. 2.
Páginas 103-109 (Agosto 2010)
Acceso a texto completo
Bone mass loss after sleeve gastrectomy: A prospective comparative study with gastric bypass
Pérdida de masa ósea tras gastrectomía tubular: estudio prospectivo comparativo con el bypass gástrico
Visitas
1304
Xavier Noguésa, Albert Godayb, Maria Jesus Peñaa, David Benaigesb, Marta de Ramónc, Xenia Crousd, Manuel Viald, Manuel Perad, Luis Granded, Adolfo Díez-Péreza, Jose Manuel Ramónd,
Autor para correspondencia
16350@hospitaldelmar.cat

Corresponding author.
a Servicio de Medicina Interna, URFOA-IMIM, RETICEF, Universitat Autónoma de Barcelona, Hospital del Mar, Barcelona, Spain
b Servicio de Endocrinología y Nutrición, Universitat Autónoma de Barcelona, Hospital del Mar, Barcelona, Spain
c Laboratori de Referència de Catalunya, S.A., Universitat Autónoma de Barcelona, Hospital del Mar, Barcelona, Spain
d Servicio de Cirugía General, Universitat Autónoma de Barcelona, Hospital del Mar, Barcelona, Spain
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Información del artículo
Abstract
Introduction

Bariatric surgery is the most effective option for the treatment of patients with a high risk of complications due to their obesity. However, it brings about a series of changes in calcium and vitamin D metabolism and an increase in resorption which lead to a loss of bone mass.

Aim

The objective of this study is to compare sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) as regards loss of bone mass using bone densitometry and bone remodelling markers.

Patients and methods

Fifteen women with morbid obesity were included, 8 by SG and 7 by RYGB, with a mean age of 47.8±9 and mean body mass index 43.3±3.4. Bone mass measurements were made on the lumbar spine, femur and distal radius, and the bone remodelling markers N-telopeptide (NTx) and bone alkaline phosphatase (BALP), as well as vitamin D levels before and 12 months after surgery.

Results

A significant bone mass loss was observed was observed with SG and RYGB, in the lumbar spine and hip, whilst no differences were observed in the radial. The percentage bone mass loss was less in the column and femur after SG than with RYGB, although it did not reach statistical significance, 4.6%±4.4 (mean±SD) and 6.3%±5.4 (mean±SD), respectively. At 12 months the Ntx increased for both types of surgery, and the BAP was only increased for SG.

Conclusion

SG causes less, although not significant, bone mass loss compared to RYGB.

Keywords:
Bariatric surgery
Bone densitometry
Osteoporosis
Bone remodelling markers
Resumen
Introducción

La cirugía bariátrica es la opción más eficaz para el tratamiento de los pacientes con alto riesgo de complicaciones por su obesidad. Sin embargo, provoca una serie de alteraciones metabólicas sobre el calcio y la vitamina D y un aumento de la resorción que conllevan una pérdida de masa ósea.

Objetivo

El objetivo del estudio es la comparación de la gastrectomía tubular (GT) con el bypass gástrico en Y de Roux (BGYR) respecto a la pérdida de masa ósea medida mediante densitometría y marcadores de remodelado óseo.

Pacientes y métodos

Se incluyeron 15 mujeres con obesidad mórbida, 8 en la GT y 7 en el BGYR, de edad media 47,8±9 con un índice de masa corporal 43,3±3,4. Se realizaron mediciones de la masa ósea a nivel de columna, fémur y tercio distal del radio y marcadores de remodelado óseo N-telopéptido (NTx), y fosfatasa alcalina específica ósea (FAO), así como niveles de vitamina D antes y a los 12 meses de la intervención.

Resultados

Se observó una pérdida significativa de masa ósea con la GT y el BGYR, en columna lumbar y cadera mientras que en el radio no se observaron diferencias significativas. El porcentaje de pérdida de masa ósea fue menor en columna y fémur tras la GT que con el BGYR, aunque sin llegar a la significación estadística, 4,6%±4,4 (media ± DE) y 6,3%±5,4 (media ± DE) respectivamente. A los 12 meses el NTx aumentó para ambos tipos de intervención y las FAO aumentaron sólo para la GT.

Conclusión

La GT provoca una pérdida menor de masa ósea, aunque no significativa, respecto el BGYR.

Palabras clave:
Cirugía bariátrica
Densitometría ósea
Osteoporosis
Marcadores de remodelado óseo
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