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Research Updates in Psychiatry: Bipolar Disorder and Anxiety Disorders

Anxiety Disorders and Bipolar DisorderBIPOLAR DISORDER

Mood Stabilizer plus Antidepressant May Protect Against Mania

Most of you would hesitate to put a patient with bipolar I on antidepressants without adding a mood stabilizer, in order to prevent a switch to mania. If this is your clinical practice, you are following the recommendations of the APA consensus guidelines for the treatment of bipolar depression. But the hard data to support the danger of switching is surprisingly weak. Clinical trials have not yielded consistent results. This is why we read with interest a recent study providing a bit more evidence that unopposed antidepressants can indeed cause manic switches—but only in bipolar I, and only over the short-term.

Researchers in Sweden used a national database to identify all patients during the period of 2005 to 2009 who had been diagnosed with bipolar disorder I and who started antidepressants. Of the 3,240 patients identified, nearly 35% were on antidepressant monotherapy while the remainder were also prescribed a mood stabilizer in addition to the antidepressant (in this study, lithium, valproate, or lamotrigine). Importantly, the researchers excluded all patients who had taken antidepressants in the previous year, to better reveal new “switching” events.

Records were reviewed for the occurrence of mania during the period after the antidepressant was started. It turns out that antidepressant monotherapy was, indeed, linked to an increased risk of mania—but only in the short term (0 to 3 months after starting the antidepressant)—the hazard ratio (HR) was 2.83, meaning that these patients were almost three times more likely to become manic than those also taking a mood stabilizer. However, 3 to 9 months after starting the medication, there was no higher prevalence of mania (HR 0.71).

When researchers focused on patients who were prescribed mood stabilizers in addition to antidepressants, there was no increased risk of mania at all, either in the 0 to 3 month period or the 3 to 9 month period. In fact, for these patients the 3 to 9 month risk of mania was actually reduced (HR 0.63).

The researchers recommend the use of mood stabilizers when antidepressants are prescribed in bipolar disorder, and also point out that more options are necessary for the management of bipolar depression. It should be noted that the present study did not evaluate whether atypical antipsychotics, commonly used in all phases of bipolar disorder, can also prevent the switch to mania (Viktorin A et al, AmJPsychiatry 2014;online ahead of print).

TCPR’s Take: The researchers recommend that clinicians add mood stabilizers to antidepressants for bipolar disorder I. This is not a huge surprise and is in line with how most of us practice. But don’t be overly seduced by these results. This was a retrospective study that relied upon diagnoses given by non-researcher clinicians, and not on standardized inter-views. Furthermore, it was limited by a non-standardized definition of “mania,” and it did not evaluate patients with bipolar II disorder. The best we can say is that at least these results don’t contradict standard practice.

ANXIETY DISORDERS

CBT Moderately Effective in Improving Quality of Life for Anxiety Disorders

Cognitive behavioral therapy (CBT) has been shown to be effective in reducing the symptoms of anxiety disorders. But there’s not a lot of information about whether it improves patients’ quality of life (QoL), even though one would think improvement in QoL is inherent when anxiety is reduced.

A recent meta-analysis looked at 44 studies, including 59 CBT trials involving 3,326 participants who received CBT for a variety of anxiety disorders, to determine the effects of the treatment on QoL.

The meta-analysis concluded that CBT has a beneficial effect on QoL, especially when it is provided face-to-face, either individually or in groups, as opposed to online. Researchers found improvements were greater for physical (ie, energy, pain, sleep) and psychological (ie, emotions, self-esteem, cognition, bodily image) domains of QoL than for environmental (ie, finances, safety/security, participation in recreation, etc.) and social (ie, personal relationships, social support, sexual activity) domains.

The overall effect on QoL increased with the duration of treatment, suggesting brief treatments may not achieve the desired outcome, although the research did not identify an “ideal” length of treatment. While symptoms of anxiety might respond within only a few sessions, longer treatment may be necessary to noticeably improve a patient’s QoL.

Of the 59 clinical trials, 22 provided individual CBT delivered face-to-face, 14 provided group CBT delivered face-to-face, and 23 delivered CBT via the Internet. The face-to-face treatments delivered individually and in groups to patients produced significantly higher effect sizes on QoL than Internet- delivered treatments (Hofmann SG et al, J Consult Clin Psychol 2014;82(3):375- 391).

TCPR’s Take: These findings support the use of CBT to enhance QoL in a wide range of anxiety disorders. This meta-analysis, however, did not compare CBT to medication management, nor did it compare the effectiveness of CBT on QoL among different anxiety disorders. Effect sizes for in-person treatments were greater than those for online treatments, but head-to-head trials comparing the two types of treatment are lacking.

Research Updates in Psychiatry: Bipolar Disorder and Anxiety Disorders

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This article was published in print 9/2014 in Volume:Issue 12:9.


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APA Reference
Psychiatry Report, T. (2016). Research Updates in Psychiatry: Bipolar Disorder and Anxiety Disorders. Psych Central. Retrieved on December 11, 2018, from https://pro.psychcentral.com/research-updates-in-psychiatry-bipolar-disorder-and-anxiety-disorders/

 

Scientifically Reviewed
Last updated: 15 Nov 2016
Last reviewed: By John M. Grohol, Psy.D. on 15 Nov 2016
Published on PsychCentral.com. All rights reserved.