Biomedical subjects

Mark S Bauer

Publications and source records attributed to Mark S Bauer.

7 recordsLinked to original sources

PubMed2003

Thyroid hypofunction in patients with rapid-cycling bipolar disorder after lithium challenge.

BACKGROUND: There is debate whether patients with rapid-cycling bipolar disorder (BD) are predisposed to thyroid axis abnormalities and whether this may contribute to development of rapid mood shifts. Using lithium carbonate as a challenge to the hypothalamic-pituitary-thyroid (HPT) system, we determined whether patients with rapid-cycling BD are sensitive to the "antithyroid" properties of lithium. METHODS: We studied the response to thyrotropin-releasing hormone (TRH) of HPT system hormones in 20 medication-free patients with rapid-cycling BD and compared these measurements with those of 20 healthy age- and gender-matched control subjects. The same measurements were repeated after both groups had received lithium carbonate for 4 weeks in sufficient doses to maintain blood levels between.7-1.2 mEq/L. RESULTS: At baseline, the results of thyroid function tests, including the TRH challenge test, did not differ between patients and control subjects. After treatment with lithium, serum concentrations of thyroxine significantly decreased, whereas basal thyrotropin (TSH) and DeltaTSH(max) significantly increased in both patients and control subjects; however, patients had significantly higher DeltaTSH(max) after TRH stimulation. More patients than control subjects developed laboratory evidence consistent with grade III hypothyroidism after lithium treatment. CONCLUSIONS: Rapid-cycling BD is associated with a latent hypofunction of the HPT system. This dysfunction becomes manifest with short-term lithium challenge.

Adult↗

PubMed2002

Overcoming barriers to reducing the burden of affective disorders.

Affective disorders impose a substantial individual and societal burden. Despite availability of efficacious treatments and practice guidelines, unmet need remains high. To reduce unmet need and the burden of affective disorders, information is needed on the distribution of burden across stakeholders, on barriers to reducing burden, and on interventions that effectively reduce burden at the levels of practice, community, and policy. This article provides the report of the Working Group on Overcoming Barriers to Reducing the Burden of Affective Disorders, for the National Institute of Mental Health Strategic Plan on Mood Disorders. We review the literature, identify key gaps, and recommend new research to guide national efforts to reduce the burden of affective disorders.

Community Health Services↗

PubMed2002

Practice-based interventions.

Current evidence indicates there remains a large gap in the provision of depression care, particularly in primary care. Several studies have demonstrated that interventions based on the chronic disease management model can improve patient outcomes. Challenges include designing more robust interventions that can move easily into a wide variety of primary care organizations. More research is needed to develop programs to improve outcomes for children with depression and adults with bipolar disorders.

Adult↗

PubMed2002

Design and implementation of a randomized trial evaluating systematic care for bipolar disorder.

OBJECTIVES: Everyday care of bipolar disorder typically falls short of evidence-based practice. This report describes the design and implementation of a randomized trial evaluating a systematic program to improve quality and continuity of care for bipolar disorder. METHODS: Computerized records of a large health plan were used to identify all patients treated for bipolar disorder. Following a baseline diagnostic assessment, eligible and consenting patients were randomly assigned to either continued usual care or a multifaceted intervention program including: development of a collaborative treatment plan, monthly telephone monitoring by a dedicated nurse care manager, feedback of monitoring results and algorithm-based medication recommendations to treating mental health providers, as-needed outreach and care coordination, and a structured psychoeducational group program (the Life Goals Program by Bauer and McBride) delivered by the nurse care manager. Blinded assessments of clinical outcomes, functional outcomes, and treatment process were conducted every 3 months for 24 months. RESULTS: A total of 441 patients (64% of those eligible) consented to participate and 43% of enrolled patients met criteria for current major depressive episode, manic episode, or hypomanic episode. An additional 39% reported significant subthreshold symptoms, and 18% reported minimal or no current mood symptoms. Of patients assigned to the intervention program, 94% participated in telephone monitoring and 70% attended at least one group session. CONCLUSIONS: In a population-based sample of patients treated for bipolar disorder, approximately two-thirds agreed to participate in a randomized trial comparing alternative treatment strategies. Nearly all patients accepted regular telephone monitoring and over two-thirds joined a structured group program. Future reports will describe clinical effectiveness and cost-effectiveness of the intervention program compared with usual care.

Adolescent↗

PubMed2002

A measure for assessing patient perception of provider support for self-management of bipolar disorder.

OBJECTIVES: Health care providers have an important role in acknowledging and supporting patients' self-management of chronic illnesses such as bipolar disorder. This report describes the development and evaluation of a brief measure for assessing patient perception of providers' support for self-management of bipolar disorder. METHODS: A 10-item measure was developed combining generic items from an existing measure of providers' autonomy supportive versus controlling style with items specific to the self-management of bipolar disorder. The psychometric properties of the measure and its relation to clinical variables were evaluated in a sample of patients enrolled in an ongoing randomized intervention trial. RESULTS: Data were obtained from 420 patients with a chart diagnosis of bipolar disorder (mean age=44, 68% female, 88% Caucasian). The proportion of missing responses for items ranged from 0 to 3%. Reliability coefficient alpha for the full scale was 0.94. Corrected item-total correlations for individual items ranged from 0.70 to 0.83. Factor analysis identified a single factor accounting for 67% of total variance. Factor loadings for individual items were all at least 0.75. The measure showed moderate positive correlations with measures of self-efficacy for managing bipolar disorder (r=0.34; p < 0.001), treatment satisfaction (r=0.63; p < 0.001), small negative correlations with measures of mania symptoms (r=-0.11; p < 0.03) and depressive symptoms (r=-0.09; p < 0.10). CONCLUSIONS: This measure shows good psychometric properties and good evidence for convergent and discriminant validity. It is promising for assessing an important aspect of care for bipolar disorder.

Adolescent↗

PubMed2002

Duration of therapy and health care costs of fluoxetine, paroxetine, and sertraline in 6 health plans.

BACKGROUND: Previous studies comparing fluoxetine, paroxetine, and sertraline, the 3 most common selective serotonin reuptake inhibitors (SSRIs), in naturalistic settings have produced conflicting results. With this study, we provide new evidence as to the similarities and differences among these SSRI therapies with respect to the duration of use and health care costs. METHOD: Data from 6 health maintenance organizations were used to identify patients with new-onset major depression. number of days with filled prescriptions, and total health care and depression-related costs. The sample consisted of 1771 patients given initial prescriptions for sertraline (N = 386), fluoxetine (N = 840), or paroxetine (N = 545) in the period from July 1, 1994, to March 31, 1997. Analyses included Cox proportional hazards models (for duration of initial therapy) and ordinary least squares regression (for cost). RESULTS: Patients who initiated therapy with fluoxetine were more likely to have a later interruption of therapy than patients who initiated therapy with sertraline (p = .03) and paroxetine (p = .001). Total 1-year costs did not differ statistically between the treatment groups, but 1-year depression-related costs were significantly lower for patients who initiated therapy with sertraline or paroxetine than for those who initiated therapy with fluoxetine ($332 less for sertraline, 95% confidence interval [CI] = $125 to $562; $339 less for paroxetine, 95% CI = $144 to $416). LIMITATIONS: A limitation of this observational study, as well as of observational studies in general, is that unobserved characteristics of the patients may lead to biased estimates of the impact of treatment on adherence or cost, even with controls for observed characteristics. CONCLUSION: We found no significant differences in total health care costs among the 3 SSRIs, but noted significant differences in depression-related costs (the costs of fluoxetine are greater than those of sertraline and paroxetine). Importantly, there was no relationship between treatment interruption and increased health care or depression-related costs, in contrast to the findings of some, but not all, prior studies.

Adolescent↗

PubMedDate not supplied

A review of quantitative studies of adherence to mental health clinical practice guidelines.

Mental health clinical practice guidelines have proliferated, but there is little evidence regarding the degree to which they are actually implemented in clinical practice. The goal of this study was to locate and review all peer-reviewed reports published through 2000 that provide quantitative information on rates of adherence to specific mental health guidelines. A literature search yielded 41 pertinent studies. These studies were of three types: 26 were cross-sectional investigations performed after the release of guidelines, six were conducted before and after release of guidelines without any specific intervention (pre/post), and nine involved a controlled trial of a specific intervention. Only 37% were conducted in the mental health specialty sector. Adequate adherence was found in 27% of the cross-sectional and pre/post studies but in 67% of the controlled trials. Successful interventions tended to be complex, involving system redesign or additional resources. Only six of 13 investigations (46%) that also measured patient outcome found that better outcome was associated with greater guideline adherence. Several studies showed that after cessation of interventions, adherence rates returned to preintervention levels. Thus, evidence indicates that guideline adherence is not high without specific intervention, but that certain interventions (typically multifaceted and resource-intensive ones) improve adherence. However, the public health challenge is to design and implement interventions that are sustainable in general clinical practice.

Attitude of Health Personnel↗