HERPERTZ, S., R. KIELMANN, A.M. WOLF, J. HEBEBRAND, AND W. SENF. Do psychosocial variables predict weight loss or mental health after obesity surgery? A systematic review. Obes Res. 2004;12:1554 -1569. Objective: The objective of this study was to present a systematic review of psychological and psychosocial predictors of weight loss and mental health after bariatric surgery. This systematic review included all controlled and noncontrolled trials of the last 2 decades with either a retrospective or prospective design and a follow-up period of at least 1 year. Research Methods and Procedures:The relevant literature was identified by a search of computerized databases. All articles published in English and German between 1980 and 2002 were reviewed. Results: Using the above inclusion/exclusion criteria, 29 articles were identified focusing on psychosocial predictors of weight loss and mental health after obesity surgery. Discussion: Personality traits have no predictive value for the postoperative course of weight or mental state. Apart from serious psychiatric disorders including personality disorders, psychiatric comorbidity seems to be of more predictive value for mental and physical well-being as two essential aspects of quality of life than for weight loss postsurgery. However, depressive and anxiety symptoms as correlates of psychological stress with regard to obesity seem to be positive predictors of weight loss postsurgery. The severity of the symptoms or the disorder is more relevant for the outcome of obesity surgery than the specificity of the symptoms. It is also not solely the consumption of distinct "forbidden" foods, such as sweets or soft drinks, but rather a general hypercaloric eating behavior, either as an expression of the patient's inadequate compliance or a dysregulation in energy balance, which is associated with a poor weight loss postsurgery.
OBJECTIVE:The objective of this study is to present a review of the psychosocial outcome of bariatric surgery with special consideration of psychiatric comorbidity, psychopathology, psychosocial functioning, econometric data, and general quality of life (QoL). PURPOSE: A review of all (non-) controlled trials of the last two decades both with a retrospective and prospective design and a follow-up period of at least 1 y. RESEARCH METHODS AND PROCEDURES:The relevant literature was identified by a search of computerized databases. All articles published in English and German since 1980 were reviewed. Based on the requirements of the evidenced-based guidelines of the Agency for Health Care Policy and Research and the Scottish Intercollegiate Guidelines Network, each study was rated by a level of evidence. RESULTS: In all, 171 publications were reviewed. Using the above inclusion/exclusion criteria, 63 articles including two systematic reviews were identified. A total of 40 studies focused on psychosocial outcome after obesity surgery. CONCLUSION: Mental health and psychosocial status including social relations and employment opportunities improve for the majority of people after bariatric surgery thus leading to an improved QoL. Psychiatric comorbidity, predominantly affective disorders, and psychopathologic symptoms decrease postsurgically. A substantial percentage of bariatric surgery patients suffer from binge eating disorder or binge eating symptoms. The effect of bariatric surgery on the outcome of binge eating symptoms largely depends on the type of operation. With the exception of patients with a severe psychiatric comorbidity, the concern that obesity surgery will reinforce psychic symptoms and lead to a reduction in the QoL seems to be unfounded.
Postoperative but not preoperative eating behavior is of predictive value for the extent of weight loss after gastric restriction surgery.
We investigated the psychosocial effects of a right hepatectomy on donors for adult living donor liver transplantation (ALDLT). Questionnaires were sent to 66 actual donors, who had undergone ALDLT between August 1998 and September 2003, as well as to 139 potential donors, who had been examined as possible candidates for ALDLT; the latter had been excluded and had not undergone surgery. All actual donors reported full recovery within an average period of 14.41 (standard deviation ϭ 8.86) weeks; all had returned to their preoperative employment. In preparation for ALDLT, they had received significantly more support from their families in the decision-making process than the potential donors had ( t ϭ 2.02; degree of freedom ϭ 79; P ϭ 0.047); they also felt better informed about donation than the potential donors (t ϭ 2.04; df ϭ 64; P ϭ 0.045). Psychiatric problems occurred in 6 (14%) female donors in the perioperative period, mostly in connection with unrealistic outcome expectations. Donors with severe postoperative complications (n ϭ 3) demonstrated higher scores of psychiatric symptoms (chi-square ϭ 6.39; df ϭ 2; P ϭ 0.041). When we compared potential and actual donors, a significant difference in emotional quality of life was not demonstrated (t ϭ 0.41; df ϭ 76; P ϭ 0.684), and it corresponded to that of the normative sample. For donors, perceived emotional quality of life did not depend on the course of recovery of the recipients. Six to 9 months after donation, potential donors reported a significantly higher physical quality of life than actual donors (t ϭ 2.20; df ϭ 56; P ϭ 0.032). In conclusion, female donors, donors with their own major complications, or donors with unrealistic outcome expectations should be provided with adequate psychosocial care. With regard to the psychosocial outcome, ALDLT is a safe intervention for the donor.
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