Gender differences in subjective experience and treatment of bipolar disorder

Preventive Medication Patterns in Bipolar Disorder and Their Relationship With Comorbid Substance Use Disorders in a Cross-National Observational Study

OBJECTIVE

The potential role of sub-optimal pharmacological treatment in the poorer outcomes observed in bipolar disorder (BD) with vs. without comorbid substance use disorders (SUDs) is not known. Thus, we investigated whether patients with BD and comorbid SUD had different medication regimens than those with BD alone, in samples from France and Norway, focusing on compliance to international guidelines.

METHODS

Seven hundred and seventy patients from France and Norway with reliably ascertained BD I or II (68% BD-I) were included. Medication information was obtained from patients and hospital records, and preventive treatment was categorized according to compliance to guidelines. We used Bayesian and regression analyses to investigate associations between SUD comorbidity and medication. In the Norwegian subsample, we also investigated association with lack of medication.

RESULTS

Comorbid SUDs were as follows: current tobacco smoking, 26%, alcohol use disorder (AUD), 16%; cannabis use disorder (CUD), 10%; other SUDs, 5%. Compliance to guidelines for preventive medication was lacking in 8%, partial in 44%, and complete in 48% of the sample. Compliance to guidelines was not different in BD with and without SUD comorbidity, as was supported by Bayesian analyses (highest Bayes Factor = 0.16). Cross national differences in treatment regimens led us to conduct country-specific adjusted regression analyses, showing that (1) CUD was associated with increased antipsychotics use in France (OR = 2.4, 95% CI = 1.4-3.9, p = 0.001), (2) current tobacco smoking was associated with increased anti-epileptics use in Norway (OR = 4.4, 95% CI = 1.9-11, p < 0.001), and (3) AUD was associated with decreased likelihood of being medicated in Norway (OR = 1.2, 95% CI = 1.04-1.3, p = 0.038).

CONCLUSION

SUD comorbidity in BD was overall not associated with different pharmacological treatment in our sample, and not related to the level of compliance to guidelines. We found country-specific associations between comorbid SUDs and specific medications that warrant further studies.

Addressing Delusions in Women and Men with Delusional Disorder: Key Points for Clinical Management

Delusional disorders (DD) are difficult conditions for health professionals to treat successfully. They are also difficult for family members to bear. The aim of this narrative review is to select from the clinical literature the psychosocial interventions that appear to work best for these conditions and to see whether similar strategies can be modeled or taught to family members so that tensions at home are reduced. Because the content of men's and women's delusions sometimes differ, it has been suggested that optimal interventions for the two sexes may also differ. This review explores three areas: (a) specific treatments for men and women; (b) recommended psychological approaches by health professionals, especially in early encounters with patients with DD; and (c) recommended psychoeducation for families. Findings are that there is no evidence for differentiated psychosocial treatment for men and women with delusional disorder. What is recommended in the literature is to empathically elicit the details of the content of delusions, to address the accompanying emotions rather than the logic of the presented argument, to teach self-soothing techniques, and to monitor behavior with respect to its safety. These recommendations have only been validated in individual patients and families. More rigorous clinical trials need to be conducted.

Treatment Attitudes and Adherence Among Patients with Bipolar Disorder: A Systematic Review of Quantitative and Qualitative Studies

BACKGROUND

Systematic reviews about treatment attitudes of patients influencing adherence in bipolar disorder (BD) are rare.

METHODS

A systematic review was conducted according to the PRISMA guidelines and principles of thematic synthesis. Selectively identified quantitative and qualitative studies were used to examine the attitude-adherence relationship in BD, the types and correlates of treatment attitudes, and the impact of psychosocial interventions on attitudes.

RESULTS

The final list of 163 articles included 114 observational reports (incorporating 21 psychosocial intervention trials), 45 qualitative/descriptive studies, and 4 patient surveys. A positive association between treatment attitudes and adherence was found in most quantitative and qualitative studies, though the strength of the relationship was unclear. Thematic analysis of qualitative studies suggested that patient attitudes influencing adherence were based on perceived advantages and disadvantages of treatment. The principal correlates of patients' attitudes were family attitudes, the clinician-patient alliance, social support, and patients' knowledge of BD. Though negative attitudes such as denial, concerns about adverse treatment consequences, and stigmatizing effects of treatment were common, many patients believed treatment to be beneficial and necessary. The limited data on the effect of psychosocial interventions indicated that treatments selectively targeting attitudes enhanced adherence.

LIMITATIONS

The studies were heterogeneous in design; the quality was uneven (fair to poor); and the risk of bias moderate to high.

CONCLUSIONS

Despite these flaws, awareness of the existing evidence on the attitude-adherence association and other aspects of treatment attitudes in BD can help in efforts to address nonadherence in BD.

Reasons for lithium discontinuation in men and women with bipolar disorder: a retrospective cohort study

BACKGROUND

Lithium remains first choice as maintenance treatment for bipolar affective disorder. Yet, about half of all individuals may stop their treatment at some point, despite lithium's proven benefits concerning the prevention of severe affective episodes and suicide.

METHODS

Retrospective cohort study in the Swedish region of Norrbotten into the causes of lithium discontinuation. The study was set up to (1) test whether patients with bipolar affective disorder or schizoaffective disorder, treated with lithium maintenance therapy, were more likely to discontinue lithium because of adverse effects than lack of therapeutic effectiveness, (2) explore gender differences, (3) understand the role of diagnosis and (4) identify who, patient or doctor, took the initiative to stop lithium. Review of medical records for all episodes of lithium discontinuation that had occurred between 1997 and 2013 with the intent to stop lithium for good.

RESULTS

Of 873 patients treated with lithium, 54% discontinued lithium, corresponding to 561 episodes of lithium discontinuation. In 62% of episodes, lithium was discontinued due to adverse effects, in 44% due to psychiatric reasons, and in 12% due to physical reasons interfering with lithium treatment. The five single most common adverse effects leading to lithium discontinuation were diarrhoea (13%), tremor (11%), polyuria/polydipsia/diabetes insipidus (9%), creatinine increase (9%) and weight gain (7%). Women were as likely as men to take the initiative to stop lithium, but twice as likely to consult a doctor before taking action (p < 0.01). Patients with type 1 BPAD or SZD were more likely to discontinue lithium than patients with type 2 or unspecified BPAD (p < 0.01). Patients with type 1 BPAD or SZD were more likely to refuse medication (p < 0.01). Conversely, patients with type 2 or unspecified BPAD were three times as likely to discontinue lithium for lack or perceived lack of effectiveness (p < 0.001).

CONCLUSIONS

Stopping lithium treatment is common and occurs mostly due to adverse effects. It is important to discuss potential adverse effects with patients before initiation and continuously during lithium treatment, to reduce the frequency of potentially unnecessary discontinuations.

Medication non-adherence in bipolar disorder: Review of rates, demographic and clinical predictors

AIM

To conduct a systematic search for all studies examining rates and demographic and illness-related determinants of medication non-adherence in bipolar disorder (BD).

METHODS

A comprehensive literature search was undertaken of six English-language databases to identify published articles on medication non-adherence in BD from inception till December 2016. Any article, either a review or an original-research article was examined for its relevance to the subject. All such articles were manually searched to locate any further articles containing relevant information. Studies were included only if they had adequately described the patient sample, assessment methods and statistical procedures, presented their results systematically and their conclusions were congruent with the results.

RESULTS

The initial search yielded 249 articles on the subject; of these 198 articles were included. Of the 162 original-research studies, 132 had provided information on rates of medication non-adherence in BD. There was a wide variation in rates ranging from universal adherence (100%) to almost universal non-adherence (96%); this discrepancy was more due to methodological differences than true variations in rates. Notwithstanding the significant discrepancies in methodology, based on these 132 studies mean rates of 41.5%-43% and median rates of 40%-41% were obtained for medication non-adherence in BD. Rates of adherence with mood stabilizers were significantly lower than those for antipsychotics, or for medications of all classes. None of the demographic attributes were unequivocally linked to medication non-adherence in BD. Similarly, medication-related variables such as type of medications, doses, treatment regimens and side effects did not demonstrate consistent associations with non-adherence. Among clinical characteristics the presence of comorbid substance use disorder and absence of insight were the only two factors clearly linked to non-adherence in BD.

CONCLUSION

Medication non-adherence is prevalent in about a third to half of patients with BD. Demographic, illness and treatment related factors do not predict non-adherence with certainty.

Treatment-adherence in bipolar disorder: A patient-centred approach

About half of the patients diagnosed with bipolar disorder (BD) become non-adherent during long-term treatment, a rate largely similar to other chronic illnesses and one that has remained unchanged over the years. Non-adherence in BD is a complex phenomenon determined by a multitude of influences. However, there is considerable uncertainty about the key determinants of non-adherence in BD. Initial research on non-adherence in BD mostly limited itself to examining demographic, clinical and medication-related factors impacting adherence. However, because of inconsistent results and failure of these studies to address the complexities of adherence behaviour, demographic and illness-related factors were alone unable to explain or predict non-adherence in BD. This prompted a shift to a more patient-centred approach of viewing non-adherence. The central element of this approach includes an emphasis on patients’ decisions regarding their own treatment based on their personal beliefs, life circumstances and their perceptions of benefits and disadvantages of treatment. Patients’ decision-making processes are influenced by the nature of their relationship with clinicians and the health-care system and by people in their immediate environment. The primacy of the patient’s perspective on non-adherence is in keeping with the current theoretical models and concordance-based approaches to adherence behaviour in BD. Research over the past two decades has further endorsed the critical role of patients’ attitudes and beliefs regarding medications, the importance of a collaborative treatment-alliance, the influence of the family, and the significance of other patient-related factors such as knowledge, stigma, patient satisfaction and access to treatment in determining non-adherence in BD. Though simply moving from an illness-centred to a patient-centred approach is unlikely to solve the problem of non-adherence in BD, such an approach is more likely to lead to a better understanding of non-adherence and more likely to yield effective solutions to tackle this common and distressing problem afflicting patients with BD.

Psychopharmacological treatment of 1650 in-patients with acute mania-data from the AMSP study

BACKGROUND

Several studies have analyzed prescription patterns for bipolar disorder, but few have for acute mania. Treatment strategies in this complex domain change over time and do not always follow evidence-based guidelines.

METHODS

Prescription data of in-patients suffering from acute mania in the time period from 2005 to 2012 were obtained from the database of the Drug Safety Program in Psychiatry (Institut für Arzneimittelsicherheit in der Psychiatrie; AMSP). Data were collected on two index dates per year. Changes over time were analyzed comparing the time periods 2005/06 and 2011/12.

RESULTS

Among 1650 patients (mean ±SD; age: 48.9±14.91 years; 53.1% females) 54.1% received anticonvulsants, 74.5% second-generation antipsychotics (SGAs), 17.8% first-generation antipsychotics (FGAs), 29.1% lithium, 44.1% benzodiazepines and 14.5% antidepressants. Prescription of SGAs increased from 70% to 79% (p=0.005), while prescription of FGAs and anticonvulsants decreased from 19% to 13% (p<0.05) and 59% to 46% (p<0.001), respectively. Only 30% of patients received monotherapy with one mood stabilizer. We observed an impact of gender, age and psychotic symptoms on treatment strategy. 36.8% of the women≤40 years received valproate.

LIMITATIONS

Follow-up data are missing and no differentiation between acute and maintenance treatments could be made due to the cross-sectional design. Additionally, our findings do not necessarily translate to outpatients or to other countries.

CONCLUSIONS

Combination therapies represent standard clinical practice. Though many results reflect clinical necessity, the high number of antidepressant prescriptions or valproate use in women of child-bearing age should be judged critically. Further prospective studies should focus on real-world prescription practice in acute mania to evaluate efficacy and safety of common practice. This paper is dedicated to Prof. Dr. Hanns Hippius on the occasion of his 90th birthday.

Gender differences in mood stabilizer medications prescribed to Veterans with serious mental illness

BACKGROUND

Mood stabilizer medications (MSMs) can induce significant weight gain and other metabolic side effects. Research suggests that women are more susceptible to psychotropic medication-induced metabolic side effects than men. We examined gender differences in the likelihood of receiving an MSM with a lower liability for weight gain using data from the U.S. Department of Veterans Affairs (VA) healthcare system.

METHODS

We identified 3823 VA patients with a schizophrenia or bipolar disorder diagnosis who initiated treatment with a MSM between 10/2006 and 9/2011. We used multivariable logistic regression analysis to examine gender differences in the likelihood of incident prescription of MSMs with low versus medium/high metabolic risk, adjusting for fiscal year of prescribing and demographic, mental health, and physical health characteristics.

RESULTS

Overall, 47% of women were prescribed a low metabolic risk MSM compared to 26% of men (p<0.0001). In multivariable analysis, women were 2.19 times as likely as men to be prescribed a low metabolic risk MSM (95% CI: 1.84-2.60, p<0.0001). Several demographic and clinical covariates were also independently related to prescribing of MSMs by level of metabolic risk.

LIMITATIONS

This study used retrospective administrative data collected from a VA healthcare system database, which does not allow us to understand the context in which MSM treatment decisions were made.

CONCLUSIONS

Prescribing choices for MSMs by VA mental health prescribers and female Veterans may reflect a growing awareness of the potential adverse health consequences of these treatments in women.

Gender differences in the treatment of patients with bipolar disorder: a study of 7354 patients

BACKGROUND

Gender differences in treatment that are not supported by empirical evidence have been reported in several areas of medicine. Here, the aim was to evaluate potential gender differences in the treatment for bipolar disorder.

METHODS

Data was collected from the Swedish National Quality Assurance Register for bipolar disorder (BipoläR). Baseline registrations from the period 2004-2011 of 7354 patients were analyzed. Multiple logistic regression analysis was used to study the impact of gender on interventions.

RESULTS

Women were more often treated with antidepressants, lamotrigine, electroconvulsive therapy, benzodiazepines, and psychotherapy. Men were more often treated with lithium. There were no gender differences in treatment with mood stabilizers as a group, neuroleptics, or valproate. Subgroup analyses revealed that ECT was more common in women only in the bipolar I subgroup. Contrariwise, lamotrigine was more common in women only in the bipolar II subgroup.

LIMITATIONS

As BipoläR contains data on outpatient treatment of persons with bipolar disorder in Sweden, it is unclear if these findings translate to inpatient care and to outpatient treatment in other countries.

CONCLUSIONS

Men and women with bipolar disorder receive different treatments in routine clinical settings in Sweden. Gender differences in level of functioning, bipolar subtype, or severity of bipolar disorder could not explain the higher prevalence of pharmacological treatment, electroconvulsive therapy, and psychotherapy in women. Our results suggest that clinicians׳ treatment decisions are to some extent unduly influenced by patients׳ gender.

Bipolar disorder in women

This article summarizes research pertinent to the clinical care of women with bipolar disorder. With bipolar disorder, female gender correlates with more depressive symptoms and different comorbidities. There is a high risk of symptom recurrence postpartum and possibly during perimenopause. Women with bipolar disorder have increased risk of sexually transmitted diseases, unplanned pregnancies, excessive weight gain, metabolic syndrome, and cardiovascular disease. Mood stabilizing medications, specific psychotherapies, and lifestyle changes can stabilize mood and improve functioning. Pharmacologic considerations include understanding interactions between mood stabilizing medications and contraceptive agents and risks and benefits of mood stabilizing medication during pregnancy and lactation.

Taking or not taking medications: psychiatric treatment perceptions in patients diagnosed with bipolar disorder

WHAT IS KNOWN AND OBJECTIVE

Bipolar disorder is a common and disabling condition. Although its negative impact may be limited in some way by the use of different treatment options, lack of adherence to psychiatric treatment is still an obstacle to overcome. Because there are many factors involved in non-adherence to treatment, in this study, we sought to examine the subjective aspect of this phenomenon. We analysed perceptions of both the disease and the treatment in a group of patients with bipolar disorder.

METHODS

We incorporated a qualitative design that included 50 outpatients diagnosed with bipolar disorder type 1. Through semi-structured interviews, we explored patients' perceptions of bipolarity and psychiatric medication management.

RESULTS AND DISCUSSION

The participants reported the use of medications as one of the most troubling aspects of having bipolar disorder. The fear of becoming addicted to psychiatric drugs was repeatedly mentioned among the patients as an argument for abandoning treatment. The main expectation of treatment was to achieve stable mood, but the patients considered that drugs were not the only way to be euthymic.

WHAT IS NEW AND CONCLUSIONS

The patients expressed ambivalence between the need to take medication to remain stable and the fear of negative consequences of using psychiatric drugs. Personal beliefs and environmental influences seem to determine each individual's final choice of whether to maintain or discontinue treatment; so, in everyday clinical practice, it would be necessary to discuss perceptions of the disease with patients and their families.

The meaning of antipsychotic medication to patients with schizophrenia

OBJECTIVE

To explore the meaning of taking antipsychotic medication in a population with schizophrenia.

METHOD

A literature review of publications on the meaning of medication was conducted using PsycINFO, Medline, and SOCINDEX databases (2001-2012) and search terms attitude or meaning plus antipsychotics or neuroleptics. Based on this search, 110 articles were found, 60 of which were judged relevant to the goal of this article. A recently published expert consensus guideline was also used to better understand current thinking about medication adherence issues in patients with severe mental illness. Quotations from patients attending a women's clinic for psychosis were used to expand on themes found in the literature.

RESULTS

Themes extracted from the reviewed literature fell into three main categories: a) control by and of medication, b) dependence on medication and on the prescriber, and c) stigma resulting from medication use. These themes contrast with the usual medical associations with medication (e.g., symptom relief or side effects).

CONCLUSION

Shared discussion of beliefs about medication between patient and care provider allows wider exploration of personal meanings that can help establish therapeutic relationships and integrate psychological therapy with psychopharmacology.

Six-month outcomes of customized adherence enhancement (CAE) therapy in bipolar disorder

BACKGROUND

There are few psychosocial interventions specifically focused on improved treatment adherence in people with bipolar disorder (BD). Customized adherence enhancement (CAE) is a needs-based, manualized approach intended to improve medication adherence in individuals with BD. This was a six-month prospective trial of a CAE among 43 medication non-adherent individuals with BD who were receiving treatment in a community mental health clinic (CMHC).

METHODS

CAE was flexibly administered in modules applied as indicated by an initial adherence vulnerabilities screening. Screening identified reasons for non-adherence and modules were then administered using pre-set criteria. CAE effects were evaluated at six-week, three-month, and six-month follow-up. The six-month follow-up was our primary time point of interest. The primary outcome was change from baseline in adherence using the Tablets Routine Questionnaire (TRQ) and pill counts. Secondary outcomes included change from baseline in BD symptoms [Hamilton Depression Rating Scale (HAM-D), Young Mania Rating Scale (YMRS), and Brief Psychiatric Rating Scale (BPRS)].

RESULTS

Subjects completed 86% of scheduled sessions, with only two individuals (5%) not participating in any sessions. The number of dropouts at six months was 12 (28%). Mean baseline non-adherence by TRQ was 48% [standard error (SE) 4.8%] missed tablets within the previous week and 51% (4.1%) missed tablets within the previous month. At six-month follow-up, mean TRQ non-adherence improved to 25% (6.8%) missed tablets for the previous week (p = 0.002) and 21% (5.5%) for the previous month (p < 0.001). Symptoms improved, with a change in the baseline mean (SE) BPRS of 43.6 (1.8) versus an endpoint of 36.1 (2.3) (p = 0.001), and baseline mean (SE) HAM-D of 17.8 (1.1) versus an endpoint of 15.3 (1.6) (p = 0.044).

CONCLUSION

CAE was associated with improvements in adherence, symptoms, and functional status. Controlled trials are needed to confirm these preliminary findings.