Residual symptoms and functional performance in a large sample of euthymic bipolar patients in France (the OPTHYMUM study)

The purpose of early maladaptive schemas (EMS) in the relationship dysfunction among people with bipolar disorder in the euthymic phase

OBJECTIVES

Although free from characterized manic and depressive episodes, the euthymic period in bipolar disorder (BD) remains characterized by a whole host of difficulties, particularly relational. These difficulties are factors of vulnerabilities and relapses. People's perception of their own relationships has an impact on their symptomatology, their responses to treatment and on relapse rates. Young's early maladaptive schemas (EMS) approach proves to be relevant for understanding the construction of these perceptions and working on them. Nevertheless, to this date, few studies have investigated which EMS are related to relationship dysfunction in this particular population. Determining the link between EMS and relationship difficulties would be relevant to understand psychosocial impairment of people with BD in euthymic states. The present study aims to investigate the associations between the different domains of EMS and relationship dysfunction among patients with bipolar disorder in the euthymic phase.

METHODS

Data are extracted from the FACE-BD cohort, within the BD Expert Center in Versailles. Inclusion criteria were to be aged between 18 and 65 and to be an outpatient with a diagnosis of bipolar disorder (DSM-IV-TR). Patients had to be euthymic at the time of inclusion, according to DSM-IV-TR criteria with a cut-off score of 14 on the Montgomery-Asberg Depression Rating Scale and the Young Mania Rating Scale. Non-inclusion criteria were meeting at the time of the study the criteria for characteristic depressive episode, hypomania or mania according to the DSM-IV-TR. Sociodemographic data, clinical features associated with relationship dysfunction were assessed. EMS and EMS domains were assessed with the YSQ-R short form (Young Schema Questionnaire 3 Short Form) and current relationship dysfunction were assessed with the FAST (Functioning assessment short test subscale). Successive simple linear regression analyses were performed to investigate the association between the severity scores of each EMS and the intensity of relationship dysfunction. Furthermore, successive simple linear regression analyses investigated the association between EMS domain scores and intensity of relationship dysfunction. Multiple linear regression analyses were performed to test the association between EMS scores, then EMS domains, and the intensity of relationship dysfunction after adjusting for age as well as the intensity of residual depressive and manic symptoms.

RESULTS

Relationship dysfunction is partly associated with EMS activation in particular in the separation and rejection domain (P<0.0001), the other-directedness domain (P=0.031) and the over-vigilance and inhibition domain (P=0.005). Having residual depressive symptoms is also among the factors contributing to the relationship dysfunctions of people with bipolar disorder in the euthymic phase.

DISCUSSION

This is the first study demonstrating that the activation of several domains of EMS is a risk factor of relationships difficulties for people in euthymic phase of bipolar disorder. It is necessary to identify which EMS are specifically activated and their domains of belonging in order to prevent and reduce them. EMS are a lever for functional remission. It is therefore relevant to refer people reporting relationship problems to schema therapy consistent with a personalized care. Finally, future studies should focus on the mechanisms underlying the complex relationship between EMS domains and relationship dysfunction in people with bipolar disorder in the euthymic phase. It may also be relevant for future research to control for different types of relationship dysfunction. EMS may be differentially associated with several types of interpersonal problems. The relations between different adaptation styles and EMS should be further investigated to offer more personalized care, with the aim to improve functional remission.

Factors associated with sexual dysfunction in patients with bipolar disorder

OBJECTIVES

The aims of our study were to assess the sexual function in men with bipolar disorder type 1 in remission and to determine the various sociodemographic, clinical and therapeutic factors associated with sexual dysfunction.

METHODS

We conducted a cross-sectional study over an 18-month period (January 2020-June 2021) in which we included men followed up for bipolar disorder type 1 in the euthymic phase strictly defined by a score <8 on the Young Mania Rating Scale and a score ≤7 on the Hamilton Depression Rating Scale. Sexual function was assessed using the Arizona Sexual Experiences Scale (Asex) in its Arabic-validated version.

RESULTS

Sixty patients were included in the study. The mean age was 42.5 (SD=11.1) years. Among the patients, 68% had sexual dysfunction according to the total score of the Asex scale. According to univariate analysis, several factors were significantly associated with sexual dysfunction in patients with bipolar disorder type 1: age (P=0.001), total number of hospitalizations for thymic relapse (P=0.015), total number of depressive episodes (P=0.006) and depressive dominant polarity (P=0.046). The factors identified as modifying sexuality according to the total score of the Asex scale by multivariate analysis were age at first antipsychotic prescription: P=0.01; ORa=1.109; 95% CI [1.021-1.206] and number of hospitalizations for thymic relapse: P=0.015; ORa=1.259; 95% CI [1.046-1.546].

CONCLUSION

Studies assessing factors associated with sexual dysfunction in patients with bipolar disorder type 1 in euthymia were mostly concerned with the effects of psychotropic drugs on sexual function, with factors inherent in bipolar illness itself not widely addressed in the literature. According to the results of our study, sexual dysfunction in patients with bipolar disorder in the euthymic phase is frequent and significantly associated with clinical factors inherent in the bipolar illness itself and its course.

The effect of subthreshold depressive symptoms on cognitive functions and peripheral biomarkers in bipolar disorder

OBJECTIVE

A global approach to factors responsible for functional impairment in patients with BD is necessary.

METHOD

Ninety-three euthymic patients with BD [49 patients with SD (subthreshold depression) and 44 patients without SD] and 48 healthy controls were invited for evaluation of demographic, clinical, and cognitive characteristics. To define SD, the lower limit was HDRS ≥4 points and the upper limit was HDRS <9 points. Stroop test, California verbal learning test, digit-span test, controlled word association test, and clock drawing test were performed. Serum BDNF levels were measured. Additionally in the BD group; blood drug (lithium, valproic acid), leukocyte, C-reactive protein (CRP), TSH, and vitamin B12 levels were measured.

RESULTS

We found no difference between serum BDNF levels of BD (n = 93) and controls. The cognitive performances of the BD group were worse than the control group (p < 0.001). Attention, working memory, and stroop performance of patients with SD were worse than patients without SD (p < 0.05). Verbal fluency, stroop test, and planning performance decreased as serum CRP level increased in patients with BD (p < 0.05).

CONCLUSIONS

Although the patient group with SD was in euthymia, their cognitive performance was worse than the group without SD. Poor cognitive performance in BD was associated with serum CRP levels.

The relationship between sleep disturbance and cognitive impairment in mood disorders: A systematic review

BACKGROUND

Cognitive impairment experienced by people with bipolar disorders (BD) or major depressive disorder (MDD) is associated with impaired psychosocial function and poorer quality of life. Sleep disturbance is another core symptom of mood disorders which may be associated with, and perhaps worsen, cognitive impairments. The aim of this systematic review was to critically assess the relationship between sleep disturbance and cognitive impairment in mood disorders.

METHODS

In this systematic review, relevant studies were identified using electronic database searches of PsychINFO, MEDLINE, Embase and Web of Science.

FINDINGS

Fourteen studies were included; eight investigated people with BD, five investigated people with MDD, and one included both people with MDD and people with BD. One study was an intervention for sleep disturbance and the remaining thirteen studies used either a longitudinal or cross-sectional observational design. Ten studies reported a significant association between subjectively measured sleep disturbance and cognitive impairment in people with MDD or BD after adjusting for demographic and clinical covariates, whereas no such association was found in healthy participants. Two studies reported a significant association between objectively measured (actigraphy or polysomnography) sleep abnormalities and cognitive impairment in mood disorders. One study of cognitive behavioural therapy for insomnia modified for BD (CBTI-BD) found an association between improvements in sleep and cognitive performance in BD.

INTERPRETATION

There is preliminary evidence to suggest a significant association between sleep disturbance and cognitive impairment in mood disorders. These findings highlight the need for further research of sleep disturbances and cognitive impairment in people with mood disorders.

Lifetime and point prevalence of psychotic symptoms in adults with bipolar disorders: a systematic review and meta-analysis

Psychotic symptoms, that we defined as delusions or hallucinations, are common in bipolar disorders (BD). This systematic review and meta-analysis aims to synthesise the literature on both lifetime and point prevalence rates of psychotic symptoms across different BD subtypes, including both BD type I (BDI) and BD type II (BDII). We performed a systematic search of Medline, PsycINFO, Embase and Cochrane Library until 5 August 2021. Fifty-four studies (N = 23 461) of adults with BD met the predefined inclusion criteria for evaluating lifetime prevalence, and 24 studies (N = 6480) for evaluating point prevalence. Quality assessment and assessment of publication bias were performed. Prevalence rates were calculated using random effects meta-analysis, here expressed as percentages with a 95% confidence interval (CI). In studies of at least moderate quality, the pooled lifetime prevalence of psychotic symptoms in BDI was 63% (95% CI 57.5-68) and 22% (95% CI 14-33) in BDII. For BDI inpatients, the pooled lifetime prevalence was 71% (95% CI 61-79). There were no studies of community samples or inpatient BDII. The pooled point prevalence of psychotic symptoms in BDI was 54% (95 CI 41-67). The point prevalence was 57% (95% CI 47-66) in manic episodes and 13% (95% CI 7-23.5) in depressive episodes. There were not enough studies in BDII, BDI depression, mixed episodes and outpatient BDI. The pooled prevalence of psychotic symptoms in BDI may be higher than previously reported. More studies are needed for depressive and mixed episodes and community samples.Prospero registration number: CRD 42017052706.

Early neurophysiological stimulus processing during a performance-monitoring task differentiates women with bipolar disorder from women with ADHD

Adults with attention-deficit/hyperactivity disorder (ADHD) or bipolar disorder (BD) may display similar cognitive impairments and clinical symptoms, which might reflect shared mechanisms. Initial evidence indicates disorder-specific and overlapping neurophysiological alterations using event-related potentials (ERPs) in individuals with BD or ADHD during attentional tasks, but it is unknown whether impairments generalize across other processes and tasks. We conduct the first comparison between women with ADHD (n = 20), women with BD (n = 20) and control women (n = 20) on ERPs from a performance-monitoring flanker task. The BD group showed a significantly attenuated frontal ERP of conflict monitoring (N2) compared to the ADHD group across both low-conflict (congruent) and high-conflict (incongruent) task conditions, and compared to controls in the high-conflict condition. However, when controlling for an earlier attentional ERP (frontal N1), which was significantly reduced in participants with BD compared to participants with ADHD and controls, N2 group differences were no longer significant. These results indicate that ERP differences in conflict monitoring may be attributable to differences in earlier attentional processes. These findings identify neural differences in early attention between BD and ADHD which precede conflict monitoring processes, potentially pointing to distinct neural mechanisms implicated in the two disorders.

Are patients improving during and after a psychiatric hospitalisation? Continuity of care outcomes of compulsory and voluntary admissions to an Italian psychiatric ward

Background: To compare the characteristics of compulsory admissions (CAs) and voluntary admissions (VAs) in a General Hospital Psychiatric Unit (GHPU), and to assess whether CA and VA patients’ outcomes improved during hospitalisation and followup in mental health services (MHS) based on community continuity of care.

Design and methods: Observational longitudinal study comparing 19 CAs and 83 VAs consecutively admitted to GHPU of Udine, Italy, and followed-up for six-months by MHS. Five psychometric scales assessed psychosocial and clinical characteristics for each patient at admission (T0), discharge (T1) and follow-up (T2). Statistical analyses were performed using: multivariate logistic regression for comparing CA and VA; Friedman χ2 and Mann-Whitney tests for outcomes’ improvement.

Results: Being hospitalised for a psychotic crisis was the most significant predictor of CA (OR = 5.07). An outcomes’ improvement was observed from T0 to T1 in almost all psychometric tests, while from T1 to T2 only for PSP-A (useful social activities), CGI-S (severity of illness) and CGI-EI (drug’s efficacy related to side effects). CA was associated to lower performances in all scales at T0, in GAF and CGI-S at T1, while no difference with VA was observed at T2.

Conclusions: CA and VA patients improved to a same extent during hospitalisation and follow-up, particularly in relation to social functioning. This fosters the hypothesis that communitybased MHS using a longitudinal continuity of care model might achieve recovery in a long-term perspective. Future research may benefit by considering patients’ subjective experiences and assessing long-term improvement in those who received personcentred interventions.

Patients' adherence to smartphone apps in the management of bipolar disorder: a systematic review

Background

Despite an increasing number of available mental health apps in the bipolar disorder field, these tools remain scarcely implemented in everyday practice and are quickly discontinued by patients after downloading. The aim of this study is to explore adherence characteristics of bipolar disorder patients to dedicated smartphone interventions in research studies.

Methods

A systematic review following PRISMA guidelines was conducted. Three databases (EMBASE, PsychInfo and MEDLINE) were searched using the following keywords: "bipolar disorder" or "mood disorder" or “bipolar” combined with “digital” or “mobile” or “phone” or “smartphone” or “mHealth” or “ehealth” or "mobile health" or “app” or “mobile-health”.

Results

Thirteen articles remained in the review after exclusion criteria were applied. Of the 118 eligible studies, 39 did not provide adherence characteristics. Among the selected papers, study length, sample size and definition of measures of adherence were strongly heterogeneous. Activity rates ranged from 58 to 91.6%.

Conclusion

The adherence of bipolar patients to apps is understudied. Standardised measures of adherence should be defined and systematically evaluated in future studies dedicated to these tools.

Supplementary Information

The online version contains supplementary material available at 10.1186/s40345-021-00224-6.

Prevalence and clinical correlates of residual symptoms in remitted patients with bipolar disorder: An exploratory study

OBJECTIVE

This cross-sectional study aimed to evaluate the prevalence and factors associated with residual symptoms (both depressive and manic) in subjects with bipolar disorder (BD).

MATERIALS AND METHODS

A total of 844 subjects diagnosed BD with an illness of 2 years' duration and minimum of two lifetime episodes and in clinical remission were evaluated for residual symptoms using Hamilton Depression Rating Scale (HAM-D) and Young Mania Rating Scale (YMRS). Based on the severity of residual symptoms, the study groups were divided into four groups.

RESULTS

Sixty-nine percent of the subjects had residual depressive symptoms (i.e., HAM-D score in the range of 1-7) and 59% had residual manic symptoms (i.e., YMRS score in the range of 1-7). The most common residual depressive symptom was psychic anxiety (34%) followed by impaired insight (29%). The most common manic symptom was poor insight (31%) followed by sleep disturbances (25%). Subjects with both sets of residual symptoms had onset of BD at a relatively young age, when compared to those with only residual depressive symptoms. Presence of any comorbid physical illness and substance abuse disorder was significantly higher in those with both sets of residual symptoms.

CONCLUSIONS

The present study suggests that a substantial proportion of patients with BD have residual symptoms of both types. Comorbid physical illness and substance use were associated with residual symptoms. Identification and management of residual symptoms are highly essential to improve the overall outcome of patients with BD.

The Impact of Subsyndromal Bipolar Symptoms on Patient's Functionality and Quality of Life

Subsyndromal symptoms have rarely been in the focus of bipolar research. This may be, in part, due to the fact that there is neither a uniform definition nor do they constitute an indication of regulatory and commercial interest. Nevertheless, they do have a decisive impact on the long-term course of bipolar disorder (BD), and the degree of functionality and quality of life (QoL) is more likely determined by their presence or absence than by acute episodes. Summarizing the literature an estimated 20-50% of patients suffer inter-episodically or chronically from subsyndromal BD. The most prominent symptoms that interfere with functionality are subsyndromal depression, disturbances of sleep, and perceived cognitive impairment, whereas anxiety negatively impacts on QoL. In the absence of evidence-based pharmacological treatments for subsyndromal BD, clinical practice adopts guidelines designed for treatment-resistant full-blown episodes of BD, supplemented by cognitive-behavioral, family focused or social-rhythm-based psychotherapies.

Association of subthreshold manic symptoms and cognitive impairments in euthymic patients with bipolar disorder I

Cognitive impairments exist during the euthymic period of bipolar disorder (BD). However, the impact of clinical factors (e.g., subthreshold symptoms and body mass index) on cognitive function in euthymic patients with bipolar disorder I is inconsistent. This cross-sectional study included 83 patients with euthymic BD I and 115 healthy controls. The Repeatable Battery for the Assessment of Neuropsychological Status indices were used to assess cognitive function. We assessed the relationship between cognitive function and clinical impact factors. Performance in language abilities, attention, and immediate memory was worse in euthymic BD I. Spearman's correlation revealed that indices for immediate memory and attention were negatively correlated with subthreshold manic symptoms, and indices for delayed memory were positively correlated with years of education. Linear regressions indicated that subthreshold manic symptoms were the best predictors of immediate memory and attention. Years of education predicted performance in most cognitive domains, except immediate memory. Individuals with euthymic BD I exhibited cognitive deficits in language learning, attention, and immediate memory. Our study highlights the importance of the effect of subthreshold manic symptoms on cognitive function in remitted BD; these symptoms should receive more attention and be targeted in personalized clinical therapeutic interventions.

Clinical characteristics of obstructive sleep apnea in bipolar disorders

BACKGROUND

Obstructive sleep apnea (OSA) is one of the leading non-psychiatric comorbidities in bipolar disorders (BD). We sought to explore associations between risk of OSA in BD, clinical characteristics alongside with both subjective sleep complaints and objective sleep abnormalities.

METHODS

Euthymic patients with BD (n = 144) were assessed over a three-week period, by actigraphy, clinical interviews and questionnaires.

RESULTS

Of the study sample, 32 (22%) individuals were at high risk of OSA (HR-OSA) and 112 (78%) had a low risk (LR-OSA), as assessed with the Berlin questionnaire. HR-OSA, compared to LR-OSA, were older (p = 0.031), had higher BMI (p < 0.0005), larger neck circumference (p = 0.002), and more residual depressive symptoms (p < 0.0005). HR-OSA was also associated with greater sleepiness (p = 0.003), poorer sleep quality (p = 0.003), insomnia complaints (p = 0.027), "languid" chronotype (p = 0.002), and higher actigraphy-derived fragmentation index (p = 0.015). Backward stepwise linear regression retained BMI and depressive symptoms (correct classification of 83% of participants). Classification increased up to 85.4% when adding sleepiness and languid-vigorous scales and up to 87.8% when adding fragmentation index. Combining ROC curve analysis and Youden Index provided best cut-offs (HR-OSA if cut-off greater than or equal to) of 29.84 for BMI (Sensibility(Se) = 0.47, Specificity(Spe) = 0.96) and 1.5 for MADRS total score (Se = 0.84, Spe = 0.58).

LIMITATIONS

No confirmation of OSA diagnosis with polysomnography.

CONCLUSIONS

Higher BMI and residual depressive symptoms are the two best independent predictors of OSA in BD. Such information contributes to improving the screening and management of OSA in BD.

TRIAL NUMBER

NCT02627404.

Modifiable and non-modifiable factors associated with functional impairment during the inter-episodic periods of bipolar disorder

The chronic, long-term evolution of bipolar disorder (BD) requires a careful clinical characterization with prognostic implications in terms of symptom and functional control. The OPTHYMUM multicenter study was conducted in France with the objective of evaluating residual symptoms on overall functioning of BD patients during inter-episodic period. The aims of the present study were to identify the potentially modifiable (e.g., treatable) and non-modifiable variables associated with functional impairment during the inter-episodic periods of BD. Sample was divided into two groups according to level of functioning (adequate vs. impaired), based on the FAST scale total score. FAST cut-off for functional impairment is a score >11. The two subgroups were compared as per sociodemographic and clinical variables with standard univariate analyses, and a logistic regression model was created. The model as a whole contained independent non-modifiable factors (age, gender, BD type, illness duration) and modifiable factors (illness severity, predominant polarity, depressive and manic residual symptoms, comorbidities). The final model was statistically significant (χ ² = 53.89, df = 5, p < 0.001). Modifiable factors most strongly associated with functional impairment were manic predominant polarity (OR = 1.79, CI 95% 1.09-2.96, p = 0.022), residual depressive symptoms (OR = 1.30, CI 95% 1.18-1.43, p < 0.001) and illness severity (OR = 1.24, CI 95% 1.01-1.52, p = 0.037), whilst non-modifiable factor was illness duration (OR = 1.03, CI 95% 1.01-1.05, p = 0.017). Despite intrinsic and non-modifiable illness characteristics, a clinical-wise choice of treatment may help to improve control of manic relapses. Potential improvement of residual depressive symptoms may alleviate the functional burden associated with bipolar disorder.

Residual depressive symptoms, sleep disturbance and perceived cognitive impairment as determinants of functioning in patients with bipolar disorder

BACKGROUND

Many patients with bipolar disorder (BD) experience residual symptoms during their inter-episodic periods. The study aimed to analyse the relationship between residual depressive symptoms, sleep disturbances and self-reported cognitive impairment as determinants of psychosocial functioning in a large sample of euthymic BD patients.

METHODS

This was a cross-sectional study of 468 euthymic BD outpatients. We evaluated the residual depressive symptoms with the Bipolar Depression Rating Scale, the sleep disturbances with the Pittsburgh Sleep Quality Index, the perceived cognitive performance using visual analogic scales and functioning with the Functioning Assessment Short Test. Structural equation modelling (SEM) was used to describe the relationships among the residual depressive symptoms, sleep disturbances, perceived cognitive performance and functioning.

RESULTS

SEM showed good fit with normed chi square=2.46, comparative fit index=0.94, root mean square error of approximation=0.05 and standardized root mean square residuals=0.06. This model revealed that residual depressive symptoms (path coefficient =0.37) and perceived cognitive performance (path coefficient=0.27) were the most important features significantly related to psychosocial functioning. Sleep disturbances were indirectly associated with functioning via residual depressive symptoms and perceived cognitive performance (path coefficient=0.23).

CONCLUSIONS

This study contributes to a better understanding of the determinants of psychosocial functioning during the inter-episodic periods of BD patients. These findings should facilitate decision-making in therapeutics to improve the functional outcomes of BD during this period.

Effect of early trauma on the sleep quality of euthymic bipolar patients

OBJECTIVE

Poor quality of sleep is frequent in euthymic bipolar patients and conveys worse clinical outcomes. We investigated the features of euthymic bipolar patients associated with poor sleep quality, with a focus on the effect of childhood trauma.

METHOD

493 euthymic patients with DSM-IV-defined bipolar disorders were recruited in FondaMental Advanced Centers of Expertize for Bipolar Disorders (FACE-BD) between 2009 and 2014. Clinical variables were recorded. Subjective sleep quality and history of childhood trauma were respectively measured by the Pittsburgh Sleep Quality Index (PSQI) and the Childhood Trauma Questionnaire (CTQ).

RESULTS

Poor sleepers were older, less professionally active, had significantly higher anxiety levels, took more anxiolytic drugs and did endorse more suicide attempts and suicidal ideas than good sleepers after adjusting for anxiety levels and age. Emotional abuse was associated with poor sleep quality after adjustment for BMI, age, professional activity, and bipolar disorders (BD) type (OR=1.83; 95% CI [1.30; 3.10]; p=0.02). However, this association was lost after adjustment for anxiety levels, anxiolytic treatment and suicide ideation/attempts.

LIMITATIONS

The main limitation was the type of sleep assessment, which only measured the subjective part of sleep complaints.

CONCLUSION

A history of emotional abuse might underlie sleep problems in many bipolar patients but anxiety seems to act as a confounding factor in this relationship. New studies are needed to elucidate the role of childhood maltreatment on poor sleep among bipolar patients.

Influence of lithium on sleep and chronotypes in remitted patients with bipolar disorder

BACKGROUND

Lithium (Li) is the first-line treatment for bipolar disorder (BD), but its mechanisms of action remain unknown. Although the chronobiological action of Li is well documented in animals, its effects on sleep and chronotypes in remitted BD patients have never been investigated.

METHODS

OPTHYMUM is a multicenter, cross-sectional, observational study conducted in France. We compared the sleep (Pittsburgh Sleep Quality Index, PSQI) and chronotypes (Composite Scale of Morningness, CSM) of 525 euthymic adult bipolar outpatients with (n=149) and without (n=376) current Li treatment. We used a general linear mixed-effects Poisson model to correct for age, gender, BD subtype, and mood symptoms.

RESULTS

In patients with BD type I, women taking Li had significantly lower PSQI (-23% [-37; -7]), but men did not (-4% [-20; +16]). Patients with BD I taking Li had better sleep efficiency (-40% [-61; -7]) and tended to better sleep duration scores (-42% [-68; +3]). A Li effect exists in women for both sleep duration and the use of night sedation (resp. -70% [-90; -10] and -37% [-60; +0.01]) but not in men (resp. -12% [-63;+113] and +9% [-31;+72]). No such associations were observed for BD II. No lithium effect was detected in the CSM score.

LIMITATIONS

No controls for other medications but no between-group differences for sedative or antidepressant intakes.

CONCLUSIONS

Euthymic BD I patients with Li have better sleep efficiency and longer sleep duration than those without Li. Women with Li have better sleep quality, longer sleep duration and less frequent use of night sedation.

Effects of switching to aripiprazole from current atypical antipsychotics on subsyndromal symptoms and tolerability in patients with bipolar disorder

We evaluated the effectiveness of aripiprazole among bipolar patients who had switched to this medication as a result of difficulty maintaining on their prestudy atypical antipsychotics (AAPs) because of subsyndromal mood symptoms or intolerance. This study included 77 bipolar patients who were in syndromal remission with an AAP as monotherapy or with an AAP combined with a mood stabilizer(s) who needed to switch from their present AAP because of subsyndromal symptoms or intolerance. At 24 weeks after switching to aripiprazole, the remission rates on the Montgomery-Åsberg Depression Rating Scale (MADRS) and on both the MADRS and the Young Mania Rating Scale were increased significantly in the full sample and in the inefficacy subgroup. In the inefficacy subgroup, the MADRS score change was significant during the 24 weeks of study. Total cholesterol and prolactin decreased significantly after switching to aripiprazole. The proportion of patients who had abnormal values for central obesity and hypercholesterolemia decreased significantly from baseline to week 24. These findings suggest that a change from the current AAP to aripiprazole was associated with improvement in subsyndromal mood symptoms and several lipid/metabolic or safety profile parameters in patients with bipolar disorder with tolerability concerns or subsyndromal mood symptoms.

Course of residual symptoms according to the duration of euthymia in remitted bipolar patients

OBJECTIVE

Although many studies showed the negative impact of residual symptoms on the course of bipolar disorder (BD), there is a need to examine potential differences in residual symptoms according to the duration of euthymia in remitted BD patients.

METHOD

This was a large cross-sectional study of 525 euthymic BD out-patients. A multivariate analysis of covariance was conducted to compare depressive and manic residual symptoms, sleep disturbances and cognitive complaints among three patient groups on the basis of duration of euthymia (A. 6 months to <1 year; B. 1 year to <3 years; C. 3 years to ≤5 years).

RESULTS

A significant difference between the three groups was found in residual symptoms [Pillai's Trace: F(8942) = 4.659, P < 0.001]. Tukey post hoc analysis indicated that patients from Group C presented lower residual depressive symptoms, higher sleep quality and better perceived cognitive performance compared with Group A. Group B also presented better sleep and cognitive outcomes than Group A. In addition, Group C showed the lowest incidence of functional impairment.

CONCLUSION

This study suggests that the intensity of residual symptoms and functional impairment in remitted BD patients is negatively related to the duration of euthymia.

Management of bipolar disorder in the intercontinental region: an international, multicenter, non-interventional, cross-sectional study in real-life conditions

Most of the existing data on real-life management of bipolar disorder are from studies conducted in western countries (mostly United States and Europe). This multinational, observational cohort study aimed to describe the management and clinical outcomes of bipolar patients in real-life conditions across various intercontinental countries (Bangladesh, Egypt, Iran, Israel, Tunisia, and Ukraine). Data on socio-demographic and disease characteristics, current symptomatology, and pharmacological treatment were collected. Comparisons between groups were performed using standard statistical tests. Overall, 1180 patients were included. The median time from initial diagnosis was 80 months. Major depressive disorder was the most common initial diagnosis. Mood stabilizers and antipsychotics were the most common drugs being prescribed at the time of the study. Antidepressants (mainly selective serotonin uptake inhibitors [SSRIs]) were administered to 36.1% of patients. Patients with bipolar I disorder received higher number of antipsychotics and anxiolytics than those with bipolar II disorder (p < 0.001). Presence of depressive symptoms was associated with an increase in antidepressant use (p < 0.001). Bipolar disorder real-life management practice, irrespective of region, shows a delay in diagnosis and an overuse of antidepressants. Clinical decision-making appears to be based on a multidimensional approach related to current symptomatology and type of bipolar disorder.

Management of inter-episodic periods in patients with bipolar disorder

The management of inter-episodic periods of bipolar disorder (BD) appears complex as it combines several therapeutic approaches and takes into account individual characteristics of BD patients. Over recent decades, new evidence has been provided about pharmacological treatments, psychosocial interventions or models of care for the long-term management of BD patients. Considering this, guidelines for the maintenance treatment of BD should be regarded as an evidence-based ground for everyday clinical practice in real-life setting. This article critically reviews recently published clinical guidelines on the management of BD patients during the inter-episodic phases of illness, in order to highlight the consensual or controversial recommendations.

Cognitive deficits in bipolar disorder: from acute episode to remission

Considerable evidence demonstrates that neuropsychological deficits are prevalent in bipolar disorder during both acute episodes and euthymia. However, it is less clear whether these cognitive disturbances are state- or trait-related. We here present the first longitudinal study employing a within-subject pre- and post-testing examining acutely admitted bipolar patients (BP) in depression or mania and during euthymia, aiming to identify cognitive performance from acute illness to remission. Cognitive performance was measured during acute episodes and repeated after at least 3 months of remission. To do so, 55 BP (35 depressed, 20 hypo-/manic) and 55 healthy controls (HC) were tested with a neuropsychological test battery (attention, working memory, verbal memory, executive functioning). The results showed global impairments in acutely ill BP compared to HC: depressed patients showed a characteristic psychomotor slowing, while manic patients had severe deficits in executive functioning. Twenty-nine remitted BP could be measured in the follow-up (dropout rate 48 %), whose cognitive functions partially recovered, whereas working memory and verbal memory were still impaired. However, we found that subthreshold depressive symptoms and persisting sleep disturbances in euthymic BP were associated with reduced speed, deficits in attention and verbal memory, while working memory was correlated with psychotic symptoms (lifetime). This result indicates working memory as trait related for a subgroup of BP with psychotic symptoms. In contrast, attention and verbal memory are negatively influenced by state factors like residual symptoms, which should be more considered as possible confounders in the search of cognitive endophenotypes in remitted BP.

Residual symptoms and specific functional impairments in euthymic patients with bipolar disorder

OBJECTIVES

The aims of the present study were to confirm the impact of residual symptoms on overall functioning in a large sample of euthymic patients with bipolar disorder in real-life conditions and to explore the relationship between residual symptoms and specific areas of functional impairment.

METHODS

This was a multicenter, cross-sectional, non-interventional study of euthymic outpatients with bipolar disorder. The Functioning Assessment Short Test was used to assess overall and specific domains of functioning (autonomy, occupational functioning, cognitive functioning, financial issues, interpersonal relationships, and leisure time). Various residual symptoms were assessed (residual mood symptoms, emotional dysregulation, sleep and sexual disorders, stigma, and perceived cognitive impairment). Logistic regression was used to determine the best model of association between functional domains and residual symptoms.

RESULTS

Almost half of the 468 patients included (42%) had poor overall functioning. Residual depressive symptoms appeared to have an impact on overall functioning and in nearly all areas of functioning. In addition, specific residual symptoms had significantly more negative effects on some domains of functioning in euthymic patients with bipolar disorder (residual manic symptoms and occupational stigma on autonomy, emotional inhibition on occupational functioning, residual manic symptoms on financial issues, family stigma on interpersonal relationships, and sexual function and occupational stigma on leisure time).

CONCLUSIONS

Our findings highlight the importance of evaluating overall functioning in clinical practice as well as functional domains. They also indicate that some residuals symptoms in patients with bipolar disorder should be targeted in personalized treatment plans, in order to improve functioning in the domains in which the patient is most impaired.

Delineating ADHD and bipolar disorder: A comparison of clinical profiles in adult women

OBJECTIVE

Overlapping symptoms can make the diagnostic differentiation of attention-deficit/hyperactivity disorder (ADHD) and bipolar disorder (BD) challenging in adults using current clinical assessments. This study sought to determine if current clinical measures delineate ADHD from BD in adults, comparing relative levels of ADHD, BD and emotional lability (EL) symptoms.

METHODS

Sixty adult women with ADHD, BD or controls were compared on self-report and interview measures for ADHD symptoms, mania, depression, EL, and impairment.

RESULTS

ADHD interview measures and self-ratings of ADHD symptoms best discriminated between ADHD and BD. Self-report measures of EL and depression showed non-specific enhancement in both clinical groups. BD-specific items may distinguish BD from ADHD if a retrospective time-frame is adopted.

CONCLUSIONS

Using measures which capture specific symptoms of ADHD and chronicity/episodicity of symptoms facilitates the delineation of ADHD from BD in adult women.

A bipolar II cohort (ABC): The association of functional disability with gender and rapid cycling

BACKGROUND

Bipolar II disorder (BP II) is a chronic, frequently co-morbid, and complex disorder with similar rates of attempted suicide to BP I. However, case identification for BP II studies that is based on clinician diagnosis alone is prone to error. This paper reports on differences between clinical and research diagnoses and then describes the clinical characteristics of a carefully defined BP II cohort.

METHODS

A cohort of rigorously defined BP II cases were recruited from a range of primary and secondary health services in the North of England to participate in a programme of cross-sectional and prospective studies. Case identification, and rapid cycling, comorbidities and functioning were examined.

RESULTS

Of 355 probable clinical cases of BP II disorder, 176 (∼50%) met rigorous diagnostic criteria. The sample mean age was ∼44 years, with a mean duration of mood disorder of ∼18 years. Two thirds of the cohort were female (n=116), but only 40% were in paid employment. Current and past year functioning was more impaired in females and those with rapid cycling.

LIMITATIONS

This paper describes only the preliminary assessments of the cohort, so it was not possible to examine additional factors that may contribute to the explained variance in functioning.

CONCLUSIONS

This carefully ascertained cohort of BP II cases show few gender differences, except for levels of functional impairment. Interestingly, the most common problem identified with using case note diagnoses of BP II arose because of failure to record prior episodes of mania, not failure to identify hypomania.

Impact of childhood trauma and affective temperament on resilience in bipolar disorder

Background

The aim of this study was to investigate whether childhood trauma (CT) and affective temperament have an impact on resilience in bipolar patients.

Methods

One hundred cases with bipolar disorder (BD) diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) were evaluated consecutively in their euthymic period during outpatient follow-up interviews. Diagnostic interviews were done with SCID-I, affective temperament was evaluated with the Temperament Evaluation of Memphis, Pisa, Paris and San Diego Autoquestionnaire, and resilience was evaluated with the Resilience Scale for Adults (RSA). The presence of CT was determined and measured with the Childhood Trauma Questionnaire (CTQ).

Results

Among the bipolar patients, it was found that 35 cases (35%) were CT+. Depressive, cyclothymic, and anxious temperament scores were higher in CT+ cases. However, resilience scores were higher in CT− cases. In bipolar patients with and without childhood trauma, the relationship between temperament and resilience appears to be different. A negative relation between sexual abuse, emotional abuse, emotional neglect, and anxious temperament scores and resilience scores was shown in regression analysis.

Conclusions

CT and affective temperament both have an impact on resilience in bipolar patients.

Electronic supplementary material

The online version of this article (doi:10.1186/s40345-015-0023-3) contains supplementary material, which is available to authorized users.

Subjective and physiological emotional response in euthymic bipolar patients: a pilot study

The euthymic phase of bipolar disorders may be associated with residual emotional and/or subsyndromal symptoms. The aim of this study was to compare subjective and physiologic emotional response to negative, neutral and positive emotion eliciting pictures between euthymic bipolar patients (n=26) and healthy controls (n=30). We evaluated emotional response using an emotional induction method with emotional pictures from the International Affective Picture System. We measured subjective emotional response with the Self-Assessment Manikin and physiological emotional response by measuring pupil size. No difference was found between euthymic bipolar patients and controls regarding subjective emotional response. However, upon viewing positive pictures, pupil dilation was significantly lower in euthymic bipolar patients compared to controls. This finding suggests that euthymic bipolar phase may be associated with reduced physiologic emotional response to positive valence, which is consistent with a more general negative emotional bias or can be understood as a residual emotional subsyndromal symptom.