A machine learning tool for the diagnosis of SARS-CoV-2 infection from hemogram parameters.

Monocytes and neutrophils play key roles in the cytokine storm triggered by SARS-CoV-2 infection, which changes their conformation and function. These changes are detectable at the cellular and molecular level and may be different to what is observed in other respiratory infections. Here, we applied machine learning (ML) to develop and validate an algorithm to diagnose COVID-19 using blood parameters. In this retrospective single-center study, 49 hemogram parameters from 12,321 patients with clinical suspicion of COVID-19 and tested by RT-PCR (4239 positive and 8082 negative) were analysed. The dataset was randomly divided into training and validation sets. Blood cell parameters and patient age were used to construct the predictive model with the support vector machine (SVM) tool. The model constructed from the training set (5936 patients) achieved an accuracy for diagnosis of SARS-CoV-2 infection of 0.952 (95% CI: 0.875-0.892). Test sensitivity and specificity was 0.868 and 0.899, respectively, with a positive (PPV) and negative (NPV) predictive value of 0.896 and 0.872, respectively (prevalence 0.50). The validation set model (4964 patients) achieved an accuracy of 0.894 (95% CI: 0.883-0.903). Test sensitivity and specificity was 0.8922 and 0.8951, respectively, with a positive (PPV) and negative (NPV) predictive value of 0.817 and 0.94, respectively (prevalence 0.34). The area under the receiver operating characteristic curve was 0.952 for the algorithm performance. This algorithm may allow to rule out COVID-19 diagnosis with 94% of probability. This represents a great advance for early diagnostic orientation and guiding clinical decisions.

Food addiction symptoms are related to neuroaffective responses to preferred binge food and erotic cues.

It has been proposed that some individuals succumb to maladaptive eating behaviors because, like those with addiction, they attribute high incentive salience to food-associated cues. Here, we tested whether women that attribute high incentive salience to food-associated cues report high food addiction symptomatology. In 76 college women, we assessed self-reported food addiction symptoms using the Yale Food Addiction Scale and we recorded event-related potentials (ERPs, a direct measure of brain activity) to preferred food, erotic, unpleasant, and neutral images. We used the amplitude of the late positive potential (LPP, a component of the ERPs) as an index of the incentive salience attributed to the images. Using a multivariate classification algorithm (k-means cluster analysis), we identified two neuroaffective reactivity profiles that have been previously associated with individual differences in the tendency to attribute incentive salience to cues and with differences in vulnerability to addictive behaviors. Results showed that women with elevated LPP responses to preferred food cues relative to erotic images report higher food addiction symptoms than women with low LPP responses to preferred food cues relative to other motivationally relevant stimuli. These results support the hypothesis that individual differences in the tendency to attribute incentive salience to food cues play an important role in modulating food addiction symptomatology.

Emotional reactivity to binge food and erotic cues in women with bulimia nervosa symptoms.

BACKGROUND: Studies on food cue reactivity have documented that altered responses to high-calorie food are associated with bulimic symptomatology, however, alterations in sexual motivations and behaviors are also associated clinical features in this population, which justify their inclusion as a research target. Here, we study responses to erotic cues-alongside food, neutral and aversive cues-to gain an understanding of specificity to food versus a generalized sensitivity to primary reinforcers. METHODS: We recorded peripheral psychophysiological indices -the startle reflex, zygomaticus, and corrugator responses-and self-reported emotional responses (valence, arousal, and dominance) in 75 women completing the Bulimia Test-Revised (BULIT-R). Multiple regression analysis tested whether BULIT-R symptoms were predicted by self-reported and psychophysiological responses to food versus neutral and erotic versus neutral images. RESULTS: The results showed that individuals with higher bulimic symptoms were characterized by potentiated eye blink startle response during binge food (vs. neutral images) and more positive valence ratings during erotic (vs. neutral) cues. CONCLUSIONS: The results highlight the negative emotional reactivity of individuals with elevated bulimic symptoms toward food cues, which could be related to the risk of progression to full bulimia nervosa and thereby addressed in prevention efforts. Results also point to the potential role of reactivity to erotic content, at least on a subjective level. Theoretical models of eating disorders should widen their conceptual scope to consider reactivity to a broader spectrum of primary reinforcers, which would have implications for cue exposure-based treatments. We examined appetitive and aversive cue responses in college women to investigate how bulimic symptoms relate to primary reinforcers such as food and erotic images. We recorded peripheral psychophysiological indices (the startle reflex, zygomaticus, and corrugator responses) and self-reported emotional responses (valence, arousal, and dominance) in 75 college women that were presented with the Spanish version of the Bulimia Test-Revised. The results showed that bulimic symptoms increase both psychophysiological defensiveness toward food cues and subjective pleasure toward erotic cues. The findings suggest a generalized sensitivity to primary reinforcers in the presence of bulimic symptoms, and emphasize the relevance of adopting a wider framework in research and treatment on bulimia nervosa.

Risk of suicide in households threatened with eviction: the role of banks and social support.

BACKGROUND: One of the greatest effects of the financial crisis in Spain has been the enormous increase in the number of evictions. Several studies have shown the association of evictions with different aspects of the physical and mental health. Furthermore, evictions have been associated with an increased risk of suicide. Our objective was to evaluate the risk of suicide among victims of eviction and investigate whether it is associated with specific characteristics of households and interviewees, the eviction process and social support, and health needs. METHODS: A total of 205 participants from households threatened with eviction in Granada, Spain, and 673 being the total number of members of these households, were interviewed in one-on-one sessions between April 2013 and May 2014. Through a questionnaire, information was obtained on physical and mental health, characteristics of their eviction process and support networks, and the use of health services. RESULTS: Almost half of the sample (46.7%) were at low (11.8%), moderate (16.9%), or high suicide risk (17.9%). Household and interviewee features had a limited association with suicide risk. On the contrary, the risk of suicide is greater with a longer exposure to the eviction process. In addition, threatening phone calls from banks increased significantly the risk of suicide, especially among men. Suicide risk was also associated with low social support, especially among women. Interviewees at risk of suicide received more help from nongovernmental organizations than those who were not at risk. In interviewees at risk, the main unmet needs were emotional and psychological help, especially in men. A high percentage of those at risk of suicide declare having large unmeet health needs. Finally, there was a tendency among the evicted at risk of suicide to visit emergency room and primary care more often than those not at risk, especially among women. CONCLUSIONS: To our knowledge, this is the first study showing that when banks adopt a threatening attitude, suicide risk increases among the evicted. As hypothesized, when the evicted felt socially supported, suicide risk decreased. Emotional help was the main mediator of suicide risk and the main unmet need, especially among men.

Neural Processing of Food and Erotic Cues in Bulimia Nervosa.

OBJECTIVE: Event-related brain potential (ERP) studies have shown that bulimia nervosa (BN) is associated with facilitated processing of disorder-specific stimuli, visible in altered early components during presentation of food cues and bodies varying in size. Less is known about BN and late ERPs, typically less influenced by perceptual features and regarded as more reliable indices of motivational relevance. The purpose of this study was to use the late positive potential (LPP) to investigate the motivational significance of BN-relevant stimuli. METHODS: Highly salient stimuli, such as pictures of personal binge foods and images that are pleasant, neutral, and unpleasant (e.g., human attacks) were presented to 24 women with bulimia and 24 healthy women (19.7 ± 2.1 and 20.5 ± 2.6 years, respectively). Pictures of erotic couples, previously shown to prompt the greatest appetitive reactions in healthy women, were used as pleasant cues. Based on BN aversion to body cues, we hypothesized that the motivational significance of erotic cues could be increased in bulimic women. RESULTS: Consistent with the literature, the LPP was modulated by the salience of the pictures (F(2.8,130.7) = 24.6, p < .001). An additional interaction with diagnostic group (F(2.8,130.7) = 2.8, p = .047) indicated that bulimic women showed a larger LPP than healthy controls during pictures displaying binge foods (p = .037) and erotic couples (p = .031). CONCLUSIONS: The findings provide objective evidence that BN is characterized by dysregulated emotional processing that is not limited to food cues. The implications are discussed within a transdiagnostic perspective on food-related disorders.

Post-Traumatic Stress Disorder Symptomatology in People affected by Home Eviction in Spain.

Despite the higher proportion of foreclosures and home evictions executed in Spain, compared to other countries, and the known link between social exclusion and mental health problems, studies exploring this association in Spain remain scarce. This study investigated the link between the process of home eviction and the appearance of symptomatology of post-traumatic stress disorder (PTSD), anxiety, depression, and perceived stress. Two hundred and five people affected by the process of home eviction were assessed using a structured interview that included three validated assessment instruments for PTSD, perceived stress, anxiety and depression. Analysis involved comparison with the normative groups that formed the validation studies together with regression analysis to determine the major psychological and socio-demographic predictors of perceived stress. Of the participants, 95.1% reported that they were experiencing the process of home eviction with fear, helplessness, or horror. In PTSD symptomatology, they scored higher than the normative PTSD group in symptoms of avoidance (t = 5.01; p < .05), activation (t = 5.48; p < .01), and total score (t = 4.15; p < .05). Of this subgroup, 72.5% fulfilled the DSM-IV symptom criteria for PTSD. The major predictor of perceived stress was PTSD symptomatology (B = .09; p < .001). The process of home eviction in Spain is having an alarming impact on mental health of affected people calling for effective measures to provide psychological and social support.

Psychophysiological Changes during Pure vs Guided Mirror Exposure Therapies in Women with High Body Dissatisfaction: What Are They Learning about Their Bodies?

This study aimed to examine the psychophysiological changes resulting from two mirror exposure treatments that are effective at reducing body dissatisfaction. Thirty-five university women with body dissatisfaction and subclinical eating disorders were randomly assigned to one of two groups: pure (n = 17) or guided exposure (n = 18). The participants received six sessions of treatment. Their thoughts, feelings and avoidance behaviours were assessed after each session. Their subjective discomfort, heart rate and skin conductance were assessed within the sessions. Both groups showed improvement in cognitive-affective and avoidance behaviour symptoms. Nevertheless, the pure exposure group showed faster habituation of subjective discomfort and a greater physiological response than the guided exposure group. These findings suggest that both procedures are effective interventions for improving body image disturbances, although psychophysiological changes observed within session suggest that each technique would act through different processes. Copyright © 2017 John Wiley & Sons, Ltd and Eating Disorders Association.

Mathematical detection of aortic valve opening (B point) in impedance cardiography: A comparison of three popular algorithms.

The preejection period (PEP) is an index of left ventricle contractility widely used in psychophysiological research. Its computation requires detecting the moment when the aortic valve opens, which coincides with the B point in the first derivative of impedance cardiogram (ICG). Although this operation has been traditionally made via visual inspection, several algorithms based on derivative calculations have been developed to enable an automatic performance of the task. However, despite their popularity, data about their empirical validation are not always available. The present study analyzes the performance in the estimation of the aortic valve opening of three popular algorithms, by comparing their performance with the visual detection of the B point made by two independent scorers. Algorithm 1 is based on the first derivative of the ICG, Algorithm 2 on the second derivative, and Algorithm 3 on the third derivative. Algorithm 3 showed the highest accuracy rate (78.77%), followed by Algorithm 1 (24.57%) and Algorithm 2 (13.82%). In the automatic computation of PEP, Algorithm 2 resulted in significantly more missed cycles (48.57%) than Algorithm 1 (6.3%) and Algorithm 3 (3.5%). Algorithm 2 also estimated a significantly lower average PEP (70 ms), compared with the values obtained by Algorithm 1 (119 ms) and Algorithm 3 (113 ms). Our findings indicate that the algorithm based on the third derivative of the ICG performs significantly better. Nevertheless, a visual inspection of the signal proves indispensable, and this article provides a novel visual guide to facilitate the manual detection of the B point.

Post-traumatic stress disorder symptomatology in people affected by home eviction in Spain

Despite the higher proportion of foreclosures and home evictions executed in Spain, compared to other countries, and the known link between social exclusion and mental health problems, studies exploring this association in Spain remain scarce. This study investigated the link between the process of home eviction and the appearance of symptomatology of post-traumatic stress disorder (PTSD), anxiety, depression, and perceived stress. Two hundred and five people affected by the process of home eviction were assessed using a structured interview that included three validated assessment instruments for PTSD, perceived stress, anxiety and depression. Analysis involved comparison with the normative groups that formed the validation studies together with regression analysis to determine the major psychological and socio-demographic predictors of perceived stress. Of the participants, 95.1% reported that they were experiencing the process of home eviction with fear, helplessness, or horror. In PTSD symptomatology, they scored higher than the normative PTSD group in symptoms of avoidance (t = 5.01; p < .05), activation (t = 5.48; p < .01), and total score (t = 4.15; p < .05). Of this subgroup, 72.5% fulfilled the DSM-IV symptom criteria for PTSD. The major predictor of perceived stress was PTSD symptomatology (B = .09; p < .001). The process of home eviction in Spain is having an alarming impact on mental health of affected people calling for effective measures to provide psychological and social support (AU)

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Affective Pictures and the Open Library of Affective Foods (OLAF): Tools to Investigate Emotions toward Food in Adults.

Recently, several sets of standardized food pictures have been created, supplying both food images and their subjective evaluations. However, to date only the OLAF (Open Library of Affective Foods), a set of food images and ratings we developed in adolescents, has the specific purpose of studying emotions toward food. Moreover, some researchers have argued that food evaluations are not valid across individuals and groups, unless feelings toward food cues are compared with feelings toward intense experiences unrelated to food, that serve as benchmarks. Therefore the OLAF presented here, comprising a set of original food images and a group of standardized highly emotional pictures, is intended to provide valid between-group judgments in adults. Emotional images (erotica, mutilations, and neutrals from the International Affective Picture System/IAPS) additionally ensure that the affective ratings are consistent with emotion research. The OLAF depicts high-calorie sweet and savory foods and low-calorie fruits and vegetables, portraying foods within natural scenes matching the IAPS features. An adult sample evaluated both food and affective pictures in terms of pleasure, arousal, dominance, and food craving, following standardized affective rating procedures. The affective ratings for the emotional pictures corroborated previous findings, thus confirming the reliability of evaluations for the food images. Among the OLAF images, high-calorie sweet and savory foods elicited the greatest pleasure, although they elicited, as expected, less arousal than erotica. The observed patterns were consistent with research on emotions and confirmed the reliability of OLAF evaluations. The OLAF and affective pictures constitute a sound methodology to investigate emotions toward food within a wider motivational framework. The OLAF is freely accessible at digibug.ugr.es.

La salud de las personas adultas afectadas por un proceso de desahucio / The health of adults undergoing an eviction process

Objetivo: Analizar el estado de salud percibida, y otros indicadores relacionados con la salud, en personas adultas de Granada que se encuentran en un proceso de desahucio de su vivienda habitual, de alquiler o en propiedad, en comparación con la salud de la población general andaluza. Métodos: Estudio transversal mediante encuesta administrada por personal entrenado que incluye instrumentos de la Encuesta Andaluza de Salud 2011 para la medición de variables de salud física y mental, y de hábitos relacionados con la salud. Se han comparado los resultados con los obtenidos sobre la población general andaluza mediante la Encuesta Andaluza de Salud. Se ha realizado un análisis bivariado utilizando la prueba de ji al cuadrado, y un análisis multivariado mediante regresión logística. Resultados: Se ha obtenido una muestra total de 205 personas en proceso de desahucio. El 59,5% (122) son mujeres y el 40,5% (83) hombres. Presentan una mayor probabilidad de tener una salud deficiente (odds ratio [OR]: 12,63; intervalo de confianza del 95% [IC95%]: 8,74-18,27), enfermedad cardiovascular (OR: 3,08; IC95%:1,54-6,16) o consumir tabaco (OR: 1,68; IC95%: 1,21-2,33), en comparación con la población general andaluza. La mayoría de los indicadores analizados muestran un peor resultado para las mujeres que experimentan un proceso de desahucio. Conclusiones: Nuestros resultados indican que las personas afectadas por un proceso de desahucio en Granada y su área metropolitana, en el actual contexto de crisis, expresan una peor salud en relación a la población general andaluza. Es necesario seguir investigando sobre la salud y los desahucios, desde diferentes aproximaciones metodológicas, para una mejor comprensión de este problema (AU)

Objective: To analyze perceived health status and other health-related indicators in the adult population in Granada (Spain) undergoing an eviction process from their homes, whether rented or owned, in comparison with health indicators in the general adult population in Andalusia. Methods: A cross-sectional survey was administered by trained staff. The survey included instruments from the Andalusian Health Survey 2011 for measuring variables related to physical and mental health, as well as health-related habits. We compared the results with those obtained from the Andalusian general population through the Andalusian Health Survey. A bivariate analysis using the ji2 test and a multivariate logistic regression analysis were conducted. Results: We obtained a total sample of 205 people in the process of eviction. A total of 59.5% (n=122) were women, and 40.5% (n=83) were men. Participants were more likely to have poor health (odds ratio [OR]: 12.63, 95% confidence interval [95%CI]: 8.74-18.27), have cardiovascular diseases (OR: 3.08; 95%CI: 1.54- 6.16), or to smoke (OR: 1.68; 95% CI: 1.21-2.33) compared with the Andalusian general population. Most of the health indicators analyzed showed a worse outcome for women undergoing an eviction process. Conclusions: Our results suggest that, in the current context of economic crisis, people undergoing a process of eviction in Granada and its metropolitan area show poorer health than the Andalusian general population. Further research is needed on health and evictions from different methodological approaches, for a better understanding of the topic (AU)

[The health of adults undergoing an eviction process]. / La salud de las personas adultas afectadas por un proceso de desahucio.

OBJECTIVE: To analyze perceived health status and other health-related indicators in the adult population in Granada (Spain) undergoing an eviction process from their homes, whether rented or owned, in comparison with health indicators in the general adult population in Andalusia. METHODS: A cross-sectional survey was administered by trained staff. The survey included instruments from the Andalusian Health Survey 2011 for measuring variables related to physical and mental health, as well as health-related habits. We compared the results with those obtained from the Andalusian general population through the Andalusian Health Survey. A bivariate analysis using the χ2 test and a multivariate logistic regression analysis were conducted. RESULTS: We obtained a total sample of 205 people in the process of eviction. A total of 59.5% (n=122) were women, and 40.5% (n=83) were men. Participants were more likely to have poor health (odds ratio [OR]: 12.63, 95% confidence interval [95%CI]: 8.74-18.27), have cardiovascular diseases (OR: 3.08; 95%CI: 1.54- 6.16), or to smoke (OR: 1.68; 95% CI: 1.21-2.33) compared with the Andalusian general population. Most of the health indicators analyzed showed a worse outcome for women undergoing an eviction process. CONCLUSIONS: Our results suggest that, in the current context of economic crisis, people undergoing a process of eviction in Granada and its metropolitan area show poorer health than the Andalusian general population. Further research is needed on health and evictions from different methodological approaches, for a better understanding of the topic.

Testing the efficacy of pure versus guided mirror exposure in women with bulimia nervosa: A combination of neuroendocrine and psychological indices.

BACKGROUND AND OBJECTIVES: Body exposure improves body image problems in women with eating disorders. However it has almost always been combined with other interventions. Thus, the efficacy of body exposure alone (i.e., pure exposure) remains largely unclear. We aimed to compare the efficacy of two body exposure techniques through psychological and neuroendocrine indices recorded within and between successive sessions. METHOD: Twenty-nine women with high body dissatisfaction and diagnosis of bulimia nervosa were randomly assigned to one of two treatment groups: Pure Exposure (n = 14) or Guided Exposure (n = 15). Participants received 6 exposure sessions. After each session, changes in thoughts (positive/negative) and body satisfaction were assessed. Also, we assessed the body discomfort experienced by participants within and between sessions. Finally, the changes in salivary cortisol levels within and between the initial and final treatment sessions were measured. RESULTS: Both groups showed a reduction in negative thoughts and a progressive increase in positive thoughts throughout the treatment. However, the increase in body satisfaction and the reduction in subjective discomfort within the sessions were greater in the pure exposure group. The cortisol levels during the initial and final treatment sessions decreased in both groups. LIMITATIONS: Methodological limitations are reported. CONCLUSIONS: These results suggest that pure and guided exposures are effective interventions for improving thoughts and neuroendocrine responses, although pure exposure increased more body satisfaction feelings in bulimic women. Subjective discomfort also showed different patterns of change within and along sessions for each treatment. Reasons for these results are discussed.

Meet OLAF, a good friend of the IAPS! The Open Library of Affective Foods: a tool to investigate the emotional impact of food in adolescents.

In the last decades, food pictures have been repeatedly employed to investigate the emotional impact of food on healthy participants as well as individuals who suffer from eating disorders and obesity. However, despite their widespread use, food pictures are typically selected according to each researcher's personal criteria, which make it difficult to reliably select food images and to compare results across different studies and laboratories. Therefore, to study affective reactions to food, it becomes pivotal to identify the emotional impact of specific food images based on wider samples of individuals. In the present paper we introduce the Open Library of Affective Foods (OLAF), which is a set of original food pictures created to reliably select food pictures based on the emotions they prompt, as indicated by affective ratings of valence, arousal, and dominance and by an additional food craving scale. OLAF images were designed to allow simultaneous use with affective images from the International Affective Picture System (IAPS), which is a well-known instrument to investigate emotional reactions in the laboratory. The ultimate goal of the OLAF is to contribute to understanding how food is emotionally processed in healthy individuals and in patients who suffer from eating and weight-related disorders. The present normative data, which was based on a large sample of an adolescent population, indicate that when viewing affective non-food IAPS images, valence, arousal, and dominance ratings were in line with expected patterns based on previous emotion research. Moreover, when viewing food pictures, affective and food craving ratings were consistent with research on food cue processing. As a whole, the data supported the methodological and theoretical reliability of the OLAF ratings, therefore providing researchers with a standardized tool to reliably investigate the emotional and motivational significance of food. The OLAF database is publicly available at zenodo.org.

Feeling bad posing as a model: an objective manner of study upward own-body comparisons in body-dissatisfied women.

Emotional effects of upward body comparisons are suggested to occur automatically. A startle reflex paradigm was used to objectively examine the emotions elicited by viewing a picture of one's own body adopting a model pose or a neutral pose, in 30 women with high body dissatisfaction (HBD) and 33 women with low body dissatisfaction (LBD). In-task emotional responses in perceived valence, arousal and control were assessed. Additionally, post-task positive/negative and body-related beauty feelings were recorded. The results revealed that HBD women, compared with LBD women, showed (i) less pleasure, higher activation and less control whilst viewing their own bodies and (ii) less pleasure, more negative/ugliness feelings and an increased startle response when viewing themselves posing as models. The data showed that their own bodies provoked an immediate negative emotional state in HBD women. However, greater aversive psychophysiological mechanisms were automatically activated only when these women posed as models, suggesting that they made upward own-body comparisons.

The emotional and attentional impact of exposure to one's own body in bulimia nervosa: a physiological view.

BACKGROUND: Body dissatisfaction is the most relevant body image disturbance in bulimia nervosa (BN). Research has shown that viewing one's own body evokes negative thoughts and emotions in individuals with BN. However, the psychophysiological mechanisms involved in this negative reaction have not yet been clearly established. Our aim was to examine the emotional and attentional processes that are activated when patients with BN view their own bodies. METHOD: We examined the effects of viewing a video of one's own body on the physiological (eye-blink startle, cardiac defense, and skin conductance) and subjective (pleasure, arousal, and control ratings) responses elicited by a burst of 110 dB white noise of 500 ms duration. The participants were 30 women with BN and 30 healthy control women. The experimental task consisted of two consecutive and counterbalanced presentations of the auditory stimulus preceded, alternatively, by a video of the participant's own body versus no such video. RESULTS: The results showed that, when viewing their own bodies, women with BN experienced (a) greater inhibition of the startle reflex, (b) greater cardiac acceleration in the first component of the defense reaction, (c) greater skin conductance response, and (d) less subjective pleasure and control combined with greater arousal, compared with the control participants. CONCLUSION: Our findings suggest that, for women with BN, peripheral-physiological responses to self-images are dominated by attentional processes, which provoke an immobility reaction caused by a dysfunctional negative response to their own body.

Effectiveness of cognitive-behavioral therapy in morbidity obese candidates for bariatric surgery with and without binge eating disorder.

AIMS: To analyze changes in the general and specific psychopathology of morbidly obese bariatric surgery (BS) candidates after cognitive behavioral therapy (CBT) and assess differences between patients with and without binge eating disorder (BED) and between patients with obesity grades III and IV, studying their influence on weight loss. METHODS: 110 consecutive morbidly obese BS candidates [77 females; aged 41 ± 9 yrs; body mass index 49.1 ± 9.0 kg/m²] entered a three-month CBT program (12 two-hour sessions) before BS. Participants were assessed with general and specific psychopathology tests pre- and post-CBT. Data were analyzed according to the degree of obesity and presence/ absence of BED. RESULTS: At baseline, BED patients were more anxious and depressive with lower self-esteem and quality of life versus non-BED patients (p < 0.05) and were more concerned with food, weight and figure, felt greater hunger, fear and guilt, and were more influenced by contextual cues (p < 0.005). Post-CBT, these differences in self-esteem, depression, and eating disorders disappeared due to significant improvements in BED patients. No difference between OIII and OIV groups was found in any psychopathology test pre- or post-CBT. Multivariate analysis demonstrated that CBT was effective to treat psychological comorbidity regardless of the presence/ absence of BED or degree of obesity. At 1 yr post-CBT, weight loss versus baseline (before CTT) was > 10% in 61%, with no intergroup differences. CONCLUSIONS: CBT is effective to treat psychological comorbidity in BS candidates, regardless of the presence of BED and degree of obesity.

Objetivo: Analizar cambios en la psicopatología general y específica de pacientes con obesidad mórbida (OM) candidatos a Cirugía Bariátrica (CB) tras aplicación de terapia cognitiva-conductual(TCC) y evaluar diferencias entre pacientes con y sin trastorno por atracón (TA y NTA respectivamente), y entre grados de obesidad III y IV; estudiando su influencia en la pérdida peso. Material y métodos: Se incluyeron110 pacientes candidatos a CB [77mujeres; con 41 ± 9 años e IMC 49,1 ± 9,0 kg/m2] que recibieron TCC preoperatoria (12-sesiones de 2 horas) Se evalúo comorbolidad psicológica pre-post-TCC mediante test validados para la población española. Resultados: Basalmente los pacientes con TA mostraron mayor ansiedad y depresión y menor autoestima y calidad de vida que aquellos NTA (p < 0,05). También mostraron mayor preocupación por la comida, el peso y la figura revelando sentir más hambre, temor y culpa, importándoles más el contexto (p < 0,005). Tras TCC, las diferencias en autoestima, depresión y desordenes alimentarios desaparecieron, asociado a una significativa mejoría en pacientes con TA. No hubo diferencias entre grados de obesidad III y IV en ninguno de los test pre y post-TCC aplicados. El análisis multivariante demostró efectividad de la TCC para tratar la psicopatología independientemente de la presencia de TA o del grado de obesidad. Tras 1 año post-TCC, la pérdida de peso con respecto a la basal fue > 10% en 67 pacientes. Sin diferencia entre los grupos de estudio. Conclusiones: La TCC es efectiva en el tratamiento de la comorbilidad psicológica, independientemente de la presencia de TA y del grado de obesidad.

[Effectiveness of cognitive behavioral therapy on weight loss after two years of bariatric surgery in morbidly obese patients]. / Efectividad de la terapia cognitivo-conductual en la pérdida de peso tras dos años de cirugía bariátrica en pacientes con obesidad mórbida.

OBJECTIVE: To evaluate the effectiveness of Cognitive Behavioral Therapy (CBT) in the success of postoperative weight loss after 2 years of CB. METHODS: A prospective observational study was conducted in consecutive patients with morbid obesity aged between 18 and 59 yrs and enrolled in the bariatric surgery program of the Obesity Surgery Unit of our hospital from June 2007 through June 2010, with two years postoperative follow-up. Participants were divided into two groups according to their participation in Cognitive Behavioral Therapy or not. Over a 3-month period, CBT was applied in 12 2-h sessions. The main dependent variables studied were body weight and height, from which we calculated BMI and percentage of excess weight lost (weight lost x 100)/(initial weight-ideal weight), classifying patients as successful (E ) those with EPP > 50%, and unsuccessful (NE) those with EPP <50%. Participants were also, assessed for general (stress, anxiety, depression and self-esteem) and specific (binge eating and food craving) psychopathology. RESULTS: Of the 35 patients with bariatric surgery, 30 responded postoperative evaluations, 16 underwent CBT before CB and 14 underwent surgery without receiving psycho-nutritional therapy, (76% female) with a mean age of 41 ± 9.5 years. The mean baseline BMI was 42 ± 10 and 45% of patients were classified as super obese (BMI: 56 ± 6). Mean excess weight loss (EPP) was 77%. According to the EPP were classified as "successful" (S) (59%) and "unsuccessful" (U) (41%). Of the patients assigned to S, 94% received CBT (15 individuals of 17 total), compared with only 12% who did not receive (2 individuals of the 17 total) with statistically significant differences (p < 0.05). Also, the S patients appeared to be significantly less anxious and stressed and have higher self-esteem (P < 0.05). Regarding specific psychopathology, the food craving guided by hunger, loss of control over food intake and guilt was lower in patients who achieved > 50% of EPP (p < 0.04, p < 0.001, p < 0.001, respectively). It was also noted that these patients were plans to eat less and ate less for positive reinforcement (p < 0.03 and p < 0.000, respectively) than the patient group NE. CONCLUSIONS: Patients who achieved successful results in the evolution of weight loss at two years of CB are mostly (94%) who received CBT, presenting lower psychological comorbidity than NE. CBT could positively influence postoperative outcomes.

Objetivo: Evaluar la efectividad de la Terapia Cognitivo Conductual (TCC) en el éxito de la pérdida de peso postoperatoria tras 2 años de CB. Metodología: Estudio observacional prospectivo en el que se incluyeron pacientes entre 18 y 59 años candidatos a CB, entre enero de 2007 y junio de 2010, realizando seguimiento postoperatorio hasta junio de 2012. Se compararon dos grupos de estudio de acuerdo a su participación en TCC o no. Se tomaron datos de peso corporal y estatura, a partir de las cuales se calculó el IMC y porcentaje de exceso de peso perdido (Peso perdido x 100)/(Peso inicial-Peso ideal), clasificando a los pacientes como exitosos (E) los que logaron un EPP > 50% y como no exitosos (NE) aquellos con EPP < 50%. Asimismo se examinaron psicopatología general (estrés, ansiedad, depresión y autoestima) y específica de la conducta alimentaria (trastorno por atracón y ansia por la comida) mediante test validados para población española. Resultados: De los 35 pacientes intervenidos, 30 respondieron a la valoración postcirugía. 16 de ellos pasaron por TCC antes de la CB y 14 fueron intervenidos sin recibir terapia pisco-nutricional, (76% mujeres) con edad media de 41 ± 9,5 años. El IMC basal medio fue de 42 ± 10 y un 45% de los pacientes fueron clasificados como superobesos (IMC: 56 ± 6). La media de exceso de peso perdido (EPP) fue de 77%. Según el EPP se clasificaron como "exitosos" (E) a 17 pacientes (59%) y "no exitosos" a 13 (41%). De los pacientes catalogados como E, el 94% paso por TCC (15 individuos de los 17 totales) comparados con solo el 12% que no la recibió (2 individuos de los 17 totales) con diferencias estadísticamente significativas (p < 0,05). Asimismo, se observo menor incidencia de trastornos psicológicos comparados con los NE. En concreto, resultaron estar significativamente menos ansiosos y estresados y tener mayor autoestima (P < 0,05). En cuanto a la psicopatología específica, por un lado, el ansia por la comida guiada por el hambre, la pérdida de control sobre la ingesta alimentaria y el sentimiento de culpa fue menor en los pacientes que lograron >50% de EPP (p < 0,04, p < 0,001, y p < 0,001, respectivamente). También se observó que este grupo de pacientes hacían menos planes para comer y comían menos por refuerzo positivo (p < 0,03 y p < 0,000, respectivamente) que el grupo de pacientes NE. Conclusiones: Los pacientes que lograron resultados exitosos en la evolución de la perdida de peso a los dos años de CB son en su mayoría (94%) aquellos que recibieron TCC, presentando menor comorbilidad psicológica que los NE. La TCC podría influir positivamente en los resultados postoperatorios.