Publications (6)23.9 Total impact
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Article: Towards a clinical staging for bipolar disorder: Defining patient subtypes based on functional outcome.
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ABSTRACT: BACKGROUND: The functional outcome of Bipolar Disorder (BD) is highly variable. This variability has been attributed to multiple demographic, clinical and cognitive factors. The critical next step is to identify combinations of predictors that can be used to specify prognostic subtypes, thus providing a basis for a staging classification in BD. METHODS: Latent Class Analysis was applied to multiple predictors of functional outcome in a sample of 106 remitted adults with BD. RESULTS: We identified two subtypes of patients presenting "good" (n=50; 47.6%) and "poor" (n=56; 52.4%) outcome. Episode density, level of residual depressive symptoms, estimated verbal intelligence and inhibitory control emerged as the most significant predictors of subtype membership at the p<0.05 level. Their odds ratio (OR) and confidence interval (CI) with reference to the "good" outcome group were: episode density (OR=4.622, CI 1.592-13.418), level of residual depressive symptoms (OR=1.543, CI 1.210-1.969), estimated verbal intelligence (OR=0.969; CI 0.945-0.995), and inhibitory control (OR=0.771, CI 0.656-0.907). Age, age of onset and duration of illness were comparable between prognostic groups. LIMITATIONS: The longitudinal stability or evolution of the subtypes was not tested. CONCLUSIONS: Our findings provide the first empirically derived staging classification of BD based on two underlying dimensions, one for illness severity and another for cognitive function. This approach can be further developed by expanding the dimensions included and testing the reproducibility and prospective prognostic value of the emerging classes. Developing a disease staging system for BD will allow individualised treatment planning for patients and selection of more homogeneous patient groups for research purposes.Journal of affective disorders 08/2012; · 3.76 Impact Factor -
Article: Risk factors for antidepressant-related switch to mania.
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ABSTRACT: Treatment of bipolar depression with antidepressants is strongly debated on the basis of the methodologically poor and insufficient data supporting their use and the widely held belief that antidepressants can induce new episodes of abnormal mood elevation or accelerate the rate of cycling. The present study aimed at identifying clinical risk factors for switch into hypomania, mania, or mixed states, within 8 weeks after introduction of an antidepressant or after increasing its dosage, in a prospective, longitudinal design. 221 consecutive DSM-IV-TR depressed bipolar I and II disorder patients were treated with antidepressants, which were added to previously prescribed mood stabilizers and/or atypical antipsychotics. No patient was on antidepressant monotherapy. The patients were enrolled from October 2005 through January 2010. The primary outcome was the assessment of switch to mania or hypomania within 8 weeks after the introduction or dose increase of an antidepressant. Both groups were compared with analysis of variance and χ² procedures. Treatment-emergent affective switch was detected in 54 patients (24.4%) (switch group) while 167 patients (75.6%) (nonswitch group) did not experience a treatment-related switch. The main clinical differences significantly associated with the occurrence of an antidepressant-related switch, after performing logistic regression analysis, were higher rate of previous switches (P < .001) in the switch versus the nonswitch group, lower rate of responses to antidepressants (P < .001) in the switch versus the nonswitch group, and earlier age at onset (P = .026) in the switch versus the nonswitch group. Bipolar patients with an earlier age at onset and an illness course characterized by lower rate of response to antidepressants and higher rate of switches into mania or hypomania were found to be the ones with higher switch risk. Nevertheless, a greater number of previous antidepressant exposures was not associated with the occurrence of an antidepressant-associated switch. clinicaltrials.gov Identifier: NCT01503489.The Journal of Clinical Psychiatry 02/2012; 73(2):e271-6. · 5.80 Impact Factor -
Article: Six-month functional outcome of a bipolar disorder cohort in the context of a specialized-care program.
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ABSTRACT: A marked disparity between functional recovery and symptomatic improvement has been demonstrated in bipolar disorder. However, most of the previous studies have been conducted in the United States, and there is little prospective research from Europe on this topic. The main objective of the present six-month follow-up study was to assess functioning in a sample of Spanish bipolar disorder patients following an acute episode or subsyndromal state. Additionally, we also evaluated the sensitivity to change of the Functioning Assessment Short Test (FAST). A total of 97 bipolar disorder patients with syndromal (n = 59) or subsyndromal (n = 38) symptoms were evaluated using the 17-item Hamilton Depression Rating Scale and Young Mania Rating Scale. The FAST was the primary measure to assess multiple areas of psychosocial functioning. Functioning was evaluated at four different time periods: baseline, 21 days, three months, and six months. A significant improvement in global functioning was found in the whole sample over the six-month period, as indicated by a reduction of FAST total score (mean ± standard deviation) from 39.97 ± 15.10 to 30.65 ± 16.93 (F = 36.104, p = 0.0001). This was also evident in all areas of functioning studied. However, only 26.4% of remitted patients (n = 42) achieved functional recovery, while 79.6% of the total sample (N = 97) experienced clinical remission of acute symptoms. Although many patients presented syndromal recovery, only a minority of them achieved favorable functioning in multiple areas, even after specialized mental health care. Furthermore, the FAST scale was sensitive to detect minimal changes in functioning in both short (21 days) and long (6 months) periods, which may be relevant to the use of this scale in clinical trials.Bipolar Disorders 11/2011; 13(7-8):679-86. · 5.29 Impact Factor -
Article: Bipolar mixed episodes and antidepressants: a cohort study of bipolar I disorder patients.
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ABSTRACT: The aim of this study was to elucidate the factors associated with the occurrence of mixed episodes, characterized by the presence of concomitant symptoms of both affective poles, during the course of illness in bipolar I disorder patients treated with an antidepressant, as well as the role of antidepressants in the course and outcome of the disorder. We enrolled a sample of 144 patients followed for up to 20 years in the referral Barcelona Bipolar Disorder Program and compared subjects who had experienced at least one mixed episode during the follow-up (n=60) with subjects who had never experienced a mixed episode (n=84) regarding clinical variables. Nearly 40% of bipolar I disorder patients treated with antidepressants experienced at least one mixed episode during the course of their illness; no gender differences were found between two groups. Several differences regarding clinical variables were found between the two groups, but after performing logistic regression analysis, only suicide attempts (p<0.001), the use of serotonin norepinephrine reuptake inhibitors (p=0.041), switch rates (p=0.010), and years spent ill (p=0.022) were significantly associated with the occurrence of at least one mixed episode during follow-up. The occurrence of mixed episodes is associated with a tendency to chronicity, with a poorer outcome, a higher number of depressive episodes, and greater use of antidepressants, especially serotonin norepinephrine reuptake inhibitors.Bipolar Disorders 03/2011; 13(2):145-54. · 5.29 Impact Factor -
Article: Functional remediation for bipolar disorder.
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ABSTRACT: Neurocognitive impairment constitutes a core feature of bipolar illness. The main domains affected are verbal memory, attention, and executive functions. Deficits in these areas as well as difficulties to get functional remission seem to be increased associated with illness progression. Several studies have found a strong relationship between neurocognitive impairment and low functioning in bipolar disorder, as previously reported in other illnesses such as schizophrenia. Cognitive remediation strategies, adapted from work conducted with traumatic brain injury patients and applied to patients with schizophrenia, also need to be adapted to individuals with bipolar disorders. Early intervention using functional remediation, involves neurocognitive techniques and training, but also psychoeducation on cognition-related issues and problem-solving within an ecological framework.Clinical Practice and Epidemiology in Mental Health 01/2011; 7:112-6. -
Article: The impact of staging bipolar disorder on treatment outcome of family psychoeducation.
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ABSTRACT: Psychological interventions on top of pharmacological treatment can improve the outcome of bipolar disorder. However, there is a paucity of data on the aspects that may influence the effectiveness of psychological approaches to bipolar disorders. The staging models suggest a progression from prodromal to more severe and treatment-resistant presentations. The aim of this study was to assess whether a staging model in bipolar disorder was related to patients' response to psychoeducation delivered to caregivers. Post-hoc analysis from a 15-month randomized controlled trial showing the efficacy of group psychoeducation for caregivers in the prophylaxis of recurrences. The sample was composed of 113 medicated euthymic bipolar outpatients who lived with their caregivers. For the purpose of this study the patients were subdivided into two groups according to staging. The prophylactic efficacy of caregiver psychoeducation was studied based on staging. Patients on Stage I benefited from caregiver psychoeducation by having longer time to recurrence (Log-rank chi-square: 6.26; p=0.012). No significant benefits from caregiver psychoeducation were found in patients on advanced stages. The present post-hoc analysis was not properly powered to compare each one of the four stages with each other, instead staging was divided into Stage I and advanced stages (II, III or IV). Psychoeducation for caregivers of bipolar patients on Stage I may improve long-term outcome in terms of time to recurrence. This study highlights the need to introduce psychological interventions early in the course of the illness as some treatments may be more useful in patients at earlier stages of bipolar disorder.Journal of affective disorders 10/2009; 123(1-3):81-6. · 3.76 Impact Factor
Top co-authors
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Institutions
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2011–2012
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Hospital Clínic de Barcelona
Barcelona, Catalonia, Spain
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2009–2011
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University of Barcelona
- Departament de Psiquiatria i Psicobiologia Clínica
Barcelona, Catalonia, Spain
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