Failure of preoperative resting energy expenditure in predicting weight loss after gastroplasty.
OBJECTIVE
To evaluate the predictive efficacy of preoperative resting energy expenditure (REE) on weight loss after vertical banded gastroplasty (VBG). When subjected to a gastric restriction procedure of similar extent, the patients with higher energy expenditure should experience a greater negative energy balance than those with lower-energy expenditure, and thus, lose more weight, thereby making REE a reliable predictor of weight loss after VBG.


METHODS
This was a prospective investigation after VBG, taking into account the relationship between preoperative REE values and the results at 1-year follow-up in terms of weight loss and success of the procedure. The correlations were evaluated by multiple and logistic regression analysis.


RESULTS
The weight loss and the outcome at 1 year after VBG seemed to be completely independent of preoperative energy expenditure.


CONCLUSIONS
These findings suggest that, despite gastric restriction, patients may voluntarily adjust their energy intake, and that the weight outcome after VBG is influenced more by behavioral and cognitive variables than by biological or surgical factors.
Camerini
G
G
Dipartimento di Discipline Chirurgiche, Facoltà di Medicina, Università di Genova, Italy.
Adami
G F
GF
Marinari
G M
GM
Campostano
A
A
Ravera
G
G
Scopinaro
N
N
D000328:Adult; D004032:Diet; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D005544:Forecasting; D015391:Gastroplasty; D006801:Humans; D016015:Logistic Models; D008297:Male; D009767:Obesity, Morbid / Q000378:metabolism* / Q000601:surgery; D011184:Postoperative Period; D011446:Prospective Studies; D015431:Weight Loss / Q000502:physiology*