Background: Both perfectionism and social anxiety have been described in patients with eating disorders (ED) and medical students. Academic stress also can increase the risk of developing ED. Aim: To analyze the dimensions of perfectionism, social anxiety, and academic stress associated with the risk of developing ED in female medical students. Material and Methods: The Multidimensional Perfectionism Scale, the Liebowitz Social Anxiety Scale, the SISCO academic stress inventory and the Eating Attitudes Test-26, were applied to 163 female medical students from all levels of the career. The groups with and without risk of ED were compared according to these variables. Results: Twenty-four percent of respondents were at risk of ED. There were significant differences between scores of perfectionism, social anxiety, and academic stress between respondents with and without risk for ED. In general, there was a significant correlation among the variables. In a multivariate analysis, the predictors of ED risk were the perception of academic stress (Odds ratio (OR) 1.09; 95% confidence intervals (CI) 1.03-1.16) and personal standards in the context of perfectionism (OR 1.16; 95% CI 1.06-1.27). Conclusions: A substantial proportion of female medical students were at risk for ED. The risk of ED was determined mainly by academic stress and personal standards in the context of perfectionism. In this sample, social anxiety did not play a relevant role.

Background: Attentional deficit hyperactivity disorder (ADHD) in adults is associated with borderline personality characteristics or cluster B (emotional instability), but in certain populations, such as medical students, it might be associated with cluster C traits (perfectionism, dependency, anxiety). This may be compensatory to ADHD. Aim: To analyze the association between ADHD and cluster C personality traits in medical students. Material and Methods: Biodemographic characteristics, the presence of ADHD and personality traits according to clusters A, B and C were evaluated in medical students. These characteristics were compared between students with unlikely diagnosis of ADHD (Group 1) and likely or very likely diagnosis of ADHD (Group 2). Results: We included 336 participants (44% women). A likely or very likely diagnosis of ADHD was present in 64% (Group 2). Concerning personality traits, 45% exhibited traits of cluster A, 57% of cluster B, and 67% of cluster C. Compared to their counterparts of Group 1, participants in Group 2 were more likely to have a history of psychiatric/psychological care, previous diagnosis of ADHD and traits of cluster B (37 and 68% respectively) and C (55 and 74% respectively). The odds ratio of having A, B or C traits when a likely or very likely ADHD was present, were 1.29 95% confidence interval (CI) [0.8-2.07], 3.79 95% CI [2.3-6.22] and 2.4 95% CI [1.46-3.96], respectively. Conclusions: Cluster C personality traits were frequent among medical students and were significantly associated with ADHD.

Background: Patients with diabetes mellitus show a higher risk of developing depressive symptoms when compared to healthy people, hampering the management and prognosis of both diseases. However, national studies on the topic are scarce. Aim: To study the frequency and severity of depressive symptoms in patients with type 2 diabetes. Material and Methods: Beck Depression Inventory-IA and Morisky Green Levine scale were administered to diabetic patients under control at a primary care center. Pharmacological compliance was evaluated using glycosylated hemoglobin levels obtained from their clinical records. Results: We included 323 patients aged 64 ± 12 years (49% women). The frequency of depressive symptoms was 34.7%. Compared with their counterparts without depressive symptoms, patients with depression showed higher glycosylated hemoglobin levels (7.2 ± 1.7 and 6.7 ± 1.3% respectively), a higher frequency of non-compliance with treatment (63 and 43% respectively) and a higher frequency of metabolic decompensation (38 and 23% respectively). Depressive symptomatology was more common among women. Conclusions: Patients with type 2 diabetes mellitus and depressive symptoms exhibit a poorer treatment compliance and worse metabolic control as compared to their non-depressive counterparts.

Introduction: Body-focused repetitive impulsive behaviors (BFRIB) are characterized by skin, nail and hair removing, scratching and/or biting, that configurate a mental disorder in some cases. Excoriation disorder (ED) or dermatillomania has been recently added as a specific disorder in DSM-5 obsessive-compulsive spectrum. Its phenomenology describes a behavior that emerges from anxiety, followed by a progressive psychic tension and then a pleasurable sensation, concluding in many times in guilt. Evidence has reported a greater incidence of ED in college students; however, studies in Latin America are scarce. Objective: To establish frequence and phenomenological features of BFRIB and ED in college students. Methods: We performed a cross-sectional study through the application of a self-administered questionnaire about ED aspects in college students. Results: 440 students were included; 22.2% felt always or almost always the impulse to scratch their skin until they were injured; 13.2% made these actions many times a day and 4.3% deployed considerable efforts in resisting them. Most frequent reported affects were guilt, shame, repentance, and self-reproach; 24.1% thought these behaviors were abnormal and 6.1% considered they constitute a pathology. According to DSM-5 and authors’ criteria, four cases of ED were found (0.91%), when psychiatric and medical comorbidities were discarded. Conclusion: Although BFRIB were frequent in college students, dermatillomania frequency was similar to general population. A characteristic phenomenology was described, similar to the evidence reported one.

Resumen Introducción: Las conductas repetitivas impulsivas orientadas hacia el cuerpo (CRIOC) se caracterizan por el rascado, mordido y/o remoción de uñas, pelos y piel, pudiendo llegar a constituir un desorden mental. El trastorno por excoriación (TE) o dermatilomanía ha sido recientemente incorporado como desorden específico al DSM-5 como parte del espectro obsesivo-compulsivo. Su fenomenología describe una conducta reactiva a la ansiedad, seguida de tensión psíquica progresiva y luego placentera al realizarla, finalizando muchas veces en culpa. Se ha reportado una mayor incidencia de TE en estudiantes universitarios, sin embargo, los estudios en Latinoamérica son escasos. Objetivos: Establecer la frecuencia y las características fenomenológicas de las CRIOC y del TE en población universitaria. Métodos: Se realizó un estudio transversal mediante la aplicación de un cuestionario de autorreporte sobre aspectos relacionados con el TE en estudiantes universitarios. Resultados: 440 estudiantes fueron incluidos. Un 22,2% sintió siempre o casi siempre el impulso de rascar su piel hasta lesionarse; 13,2% ejecutó estas acciones varias veces al día y 4,3% desplegó mucho esfuerzo en resistirlas. Los afectos más frecuentemente asociados fueron culpa, vergüenza, arrepentimiento y autorreproche. Un 24,1% creyó que estos comportamientos fueron anormales y 6,1% que constituyeron una patología. Según criterios DSM-5 y establecidos por los autores, se hallaron cuatro casos compatibles con TE (0,91%), al descartar patologías psiquiátricas y médicas comórbidas. Conclusión: Aunque las CRIOC fueron frecuentes en población universitaria, la frecuencia de TE fue similar a la de la población general, describiendo una fenomenología característica congruente con la reportada por la literatura.

Background: The inability to carry out activities of daily living (ADL) is prevalent in elderly people and it is associated with hypertension and stroke. Aim: To evaluate ADLs using the T-ADLQ in hypertensive patients with minor stroke. Subjects and Methods: T-ADLQ, Cognitive tests (Minimental and Addenbrooke), and Hamilton depression test were applied to 100 hypertensive ambulatory patients (55 without symptomatic stroke and 45 with ischemic stroke, Rankin ≤ 2). Results: In stroke patients the ability to perform ADL was significantly reduced compared with hypertensive patients without stroke. Cognitive dysfunction and depressive symptoms were associated with a lower ADL performance. Conclusions: The T-ADLQ is useful to evaluate ADL in hypertensive ambulatory patients with ischemic stroke.

Background: Depression, alexithymia, and lack of assertiveness interfere with individual psychosocial functioning and may result in longer hospitalization stay and poorer therapeutic results. Aim: To analyze the psychosocial functioning in acute and chronic patients and its association with psychological, clinical and sociodemographic variables. Material and Methods: We performed a cross-sectional study that included 80 inpatients of both sexes with organic pathology, aged between 18 to 70 years old, without any current psychiatric disorder. Clinical and sociodemographic data were collected from a semi-structured interview and hospital records. Beck Depression Inventory-IA, Toronto Alexithymia Scale-20 and Rathus Assertiveness Scale were administered. Results: Fifty five percent of patients had some degree of depression, 33% alexithymia and 34% lack of assertiveness. The levels of depression, alexithymia and lack of assertiveness in chronic patients were significantly higher than those observed in acute patients. Women and participants older than 60 years exhibited the highest degrees of depression. Alexithymia and lack of assertiveness were associated with a lower educational level. A negative significant correlation between alexithymia and assertiveness scores was observed among acute patients. Conclusions: Participants with chronic diseases had a lower psychosocial functioning. Less educated patients showed more alexithymic and less assertive features. We emphasized the need of a better management of these aspects by the health team, since social functioning might interfere with the outcome of physical illnesses.

The opinions about the relationship between antipsychotics and suicide are controversial due to differences on reported evidence about their specific action. One ofthe most discussed topics is the increase of depressive symptomatology and the impact of some secondary effects on suicidality, mainly akinesia, akathisia and tardive diskynesia. Another polemical topic is the paradoxical effect due to the decrease ofpositive symptoms when increasing insight. We performed a critical review of the available literature concerning to the use of antipsychotics in relation to suicide in the context of psychotic and affective disorders. When appraising psychotic disorders, there was no direct evidence to support a reduction in suicide rates when using first-generation antipsychotics, probably due to methodological issues and multifactoriality ofthe phenomenon. Nevertheless, second-generation antipsychotics could be protective against suicide risk, specifically clozapine, which is considered as an antisuicidal drug on schizophrenic disorders due to a direct antidepressant action and an indirect effect mediated by an improvement in cognitive functions. On the other hand, when appraising affective disorders, bipolar spectrum has demonstrated the greatest use of antipsychotics drugs, showing effectiveness in the management ofsuicide not greater than mood stabilizers. It becomes essential to identify the specific mechanism of action of antipsychotic drugs to assess their real effect on suicidality.

La relación entre antipsicóticos y suicidio es controversial debido a las diferencias expuestas en la literatura acerca de su acción específica. Uno de los puntos de discusión ha sido el aumento de la sintomatología depresiva y el impacto de algunos efectos secundarios sobre la suicidalidad, principalmente acinesia, acatisia y disquinesia tardía. Otro elemento controvertido es el efecto paradójico producto de la aminoración de los síntomas positivos al incrementar paralelamente la instrospección. Se revisará críticamente la principal evidencia disponible en torno al uso de antipsicóticos en relación al suicidio en el contexto de trastornos psicóticos y afectivos. No existe evidencia directa que avale una disminución en las tasas de suicidio con el uso de antipsicóticos de primera generación en trastornos psicóticos, probablemente por fallas metodológicas y por la multifactorialidad del fenómeno. En relación a los de segunda generación, podrían participar como protectores frente al riesgo suicida. En los trastornos esquizofrénicos se ha considerado a la clozapina como un fármaco antisuicida, debido a una acción antidepresiva directa y un efecto indirecto mediado por un mejoramiento en las funciones cognitivas. El mayor uso de antipsicóticos en los trastornos afectivos se observa en el espectro bipolar, sin reportarse mayor efectividad en el manejo del suicidio al compararse con estabilizadores del ánimo. Es crucial identificar el mecanismo de acción específico de los antipsicóticos para evaluar su real efecto sobre la suicidalidad.

ABSTRACT Background The United States Food and Drug Administration (FDA) has warned about the increased suicidality risk associated with the use of selective serotonin reuptake inhibitors (SSRI) and venlafaxine in children and adolescents. Objectives To critically appraise the available evidence supporting the FDA Black box warning concerning to the use of antidepressants in child and adolescents. Methods A critical review of articles in Medline/PubMed and SciELO databases regarding the FDA Black box warning for antidepressants, and the impact of FDA warnings on antidepressant prescriptions and suicide rates. Results The warning was based on surveys that did not report either cases of suicide nor a significant difference supporting an increased suicidality rate. The concept was defined in an ambiguous way and there is currently more available evidence to support such definition. The use of SSRI and venlafaxine has been associated to lower suicidality rates, but the prescription fall due to the warning increased suicide rates. Discussion Suicidality is an inherent feature of depressive disorders so it would be desirable to consider how much of the phenomenon may be attributed to antidepressants per se. It would be appropriate to consider that suicide rates might increase also as a consequence of the warning.

Background: Prostate cancer (PC) is the second cause of death by cancer in men in Chile. Its behavior is so variable that it is necessary to search reliable prognostic markers. Vascular Endothelial Growth Factor (VEGF) is one of the most powerful pro-angiogenic factors. There is no agreement on its validity as a diagnostic or prognostic factor. Aim: To search for VEFG in prostatic tissue. Material and Methods: This study was performed in prostatectomy tissue coming from 41 patients with PC and 39 patients with benign prostatic hyperplasia (BPH). Specimens were studied using immunohistochemical staining for VEGF. The percentage of stained glandular cells per patient was calculated and associated with pathological diagnosis in cancer patients. Results: PC biopsies had a mean of 82% of VEGF (+) stained cells, while BPH had only 1.6% (p < 0.01). No relationship was found between the percentage of staining and recurrence at one year of follow-up in the case of PC. Conclusions: These results would rule out VEGF as a prognostic factor in this series of patients.

Background: Patients who develop hyponatremia during their hospitalization have higher hospital mortality. Aim: To determine if the presence of hyponatremia on admission to the emergency room is a risk factor for hospital mortality. Patients and Methods: Two hundred forty five patients consecutively admitted to the emergency room and then transferred to the Medicine Department, where they finally died, were matched for age and gender with 245 control subjects admitted to the emergency room and hospitalized in the Medicine Department at the same time, but survived. The dependent variable was death, and the exposure variable was hyponatremia. Admission diagnosis and Charlson comorbidity index was considered as confounding variables. Results: Hyponatremia at admission occurred in 30 and 17% of patients who died and survived, respectively, rendering an adjusted odds ratio for death of 2.13 (95% confidence intervals = 1.27-3.57). Charlson Comorbidity Index according to age score was higher in subjects with hyponatremia compared to those without hyponatremia (8.1 ± 3.1 and 7.2 ± 2.8; p = 0.01). Multivariate analysis showed that age, gender, length of stay, cause of hospitalization and chronic diseases did not significantly modify the effect of hyponatremia on hospital mortality. Conclusions: Hyponatremia on admission at emergency room had a significant association with hospital mortality. Subjects with hyponatremia had a higher Charlson Comorbidity Index score.

Introduction: Obesity and sleep apnoea-hypopnoea syndrome (SAHOS) are risk factors for cardiovascular disease (RFCVD) The ntain symptom of SAHOS is excessive daily sleepiness (EDS), measurable through Epworth Scale (ES). Objective: To determine the association between EDS and RFCVD and to establish association between SDE and RFCVD. Methods: A cross-sectional study was done during 2006 and 2007 in a population with FRCVD at Hospital Gustavo Fricke, Viña del Mar. Anthropometrical measurements were taken and a questionnaire was applied including ES. Results: SDE prevalence measured by EE was 22.12%. Prevalence of hypertension, dyslipidemia and diabetes mellitus 2 had no significant differences. Variables significantly associated to SDE were neck and waist circumference (p=0,0277 and p=0,0008 respectively), body ntass índex (p=0,014) and snoring (p=0,05), reports ofprevious apnoea episodes (p=0,005), sensation of fragmented sleep (p=0,006) and previous history of myocardial infarction (p=0,026) OR=3.4 (IC95% 1,22-8,59). Discussión: The prevalence found at this study agrees with the literature and the associations found make evaluation and determination of characteristic phenotype an easy and cheap method in order to screen and treat SAHOS.

Introducción: La obesidad y el síndrome de apnea/hipopnea del sueño (SAHOS) son factores de riesgo cardiovascular (FRCV). El principal síntoma del SAHOS es somnolencia diurna excesiva (SDE), evaluable con la Escala de Epworth (EE). Objetivos: Determinar prevalencia de SDE en población con FRCV. Establecer la asociación entre SDE y FRCV. Método: estudio transversal efectuado durante los años 2006 y 2007 en una población con FRCV del Hospital Gustavo Fricke. Se consideraron mediciones antropométricas y un cuestionario que incluyó Escala de Epworth (EE). Resultados: La prevalencia de SDE por EE fue 22,12%. La hipertensión arterial, dislipidemia y diabetes mellitus 2 no tuvieron diferencias respecto a EE. Se asociaron significativamente a SDE: una circunferencia de cuello y cintura (p=0,0277 y 0,0008 respectivamente), índice de masa corporal (p=0,014) y ronquidos (p=0,05), reporte de episodios apneicos (p=0,005), sensación de sueño fragmentado (p=0,006) y antecedente de IAM (p=0,026) OR=3.4 (IC95% 1,22-8,59). Discusión: La prevalencia de SDE encontrada concuerda con la literatura. Las asociaciones encontradas convierten al fenotipo característico y la EE en una evaluación fácil y económica para pesquisar SDE e iniciar el estudio de SAHOS.

Background: The identified risk factors for acute urinary retention after spinal anesthesia are the dose and duration of anesthesia, old age and ano rectal surgical procedures. Aim: To assess the prevalence and risk factors of acute urinary retention in the program of ambulatory surgery with spinal anesthesia. Material and methods: Descriptive case control study. The medical records of 859 patients operated with spinal anesthesia between 2003 and 2006 were reviewed, and 18 patients aged 52 + 16 years, that had an acute urinary retention, were identified. Forty vive randomly chosen patients aged 46 + 14 years, without urinary retention were analyzed as controls. Results: The calculated prevalence of acute urinary retention was 2.8%. Male sex, an age over 50 years and hernia surgery were identified as risk factors for urinary retention with odds ratios of 5.8 (95% confidence interval (Cl) 17-28), 3.1 (95%CI 1.-9.9) and 7.6 (95%CI 1.7-33.6), respectively. All cases were managed with intermittent catheterization. Hospital stay was one day in 91% and two days in the rest. Conclusions: in this series, acute urinary retention occurred in 2.8% of patients after spinal surgery. Male sex, age over 50 years and hernia repair procedures were identified ads risk factors for the complication

Introducción: Estimar la prevalencia de retención urinaria aguda en el Programa de Cirugía mayor ambulatoria con anestesia espinal, e identificar los principales factores de riesgo para su desarrollo. Material y método: Estudio descriptivo de casos y controles. De 859 pacientes operados en programa de cirugía mayor ambulatoria entre abril 2003 y julio 2006, se seleccionaron 652 pacientes sometidos a cirugía con anestesia espinal. Los casos fueron 18 pacientes que desarrollaron retención urinaria aguda y 45 controles seleccionados al azar de los pacientes sin complicaciones en el postoperatorio. Se analizó estadística por pruebas estándares. Resultados: La prevalencia de retención urinaria aguda fue 2,76%. Se asociaron significativamente al desarrollo de retención urinaria aguda en postoperatorio las variables sexo masculino, p =0.026 OR =5.76 (IC 95% 1.17-28.24), edad sobre 50 años p =0.046 OR =3.14 (IC 95% 1.01-9.86) y cirugía hemiaria p =0.001 OR =7.59 (IC 95% 1.71-33.61). En todos los casos se manejó con cateterismo intermitente y la prolongación de estadía hospitalaria fue de un día en el 91% de los casos, y dos en el resto