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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-38761

Aubert, N; Lyon-Pagès, I; Carrard, I; Suter, M; Stiefel, F; Giusti, V (2010). The predictive value of psychological assessment of candidates for gastric bypass: A medical chart review. European Journal of Psychiatry, 24(2):114-123.

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Background and Objectives: Guidelines for bariatric surgery demand a psychological evaluation of applicants. The aim of this study was to evaluate if the presence of "psychological risk factors" predicts postoperative weight loss after gastric bypass.
Methods: Medical records of obese women who underwent bariatric surgery between 2000 and 2004 were reviewed. Psychological assessment consisted of a one-hour semi-structured interview, summarized in a written report. Anthropometric assessment at baseline and 6,12,18 and 24 months after surgery included body weight, height and body mass index.
Results: The mean BMI of included patients (N = 92) was 46.2 + 6,3 kg/m2 (range 38.4 - 69.7). Based on the psychological assessment, 27% (N = 25) of the patients were classified as having "psychological risk factors" and 28% (N = 26) were diagnosed with a psychiatric diagnosis, most often major depression. Two years after gastric bypass, 16% of patients with "psychological risk factors" achieved an excellent result (%EWL > 75) versus 39% of those without (p < 0.05). About 1 out of 4 patients was in postoperative psychiatric treatment, but only half of them were identified as having "psychological risk factors" at baseline. Weight loss of patients initiating a psychiatric treatment only after surgery was less than of patients who continued psychiatric treatment already initiated before surgery (55.7 + 14.8 versus 66.5 + 14.2 %EWL).
Conclusions: A single semi-structured psychological interview may identify patients who are at risk for diminished postoperative weight loss; however, psychological assessment did not identify those patients who were in need of a psychiatric postoperative treatment.


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5 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Psychiatry and Psychotherapy
Dewey Decimal Classification:610 Medicine & health
Uncontrolled Keywords:Obesity; Bariatric surgery; Psychosocial assessment; Psychological profile; Predictor factors; Psychiatric disorders
Deposited On:17 Dec 2010 15:38
Last Modified:05 Apr 2016 14:25
Publisher:Universidad de Zaragoza
Publisher DOI:10.4321/S0213-61632010000200006

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