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The emphasis was on the role of SSRIs and TCAs albeit some literature on MAOIs and SNRIs was also considered.
Individual studies are reviewed first, followed by review articles.
Value of conducting a literature review
The safety and effectiveness of antidepressants can easily be established by conducting an original empirical study. However, individual studies are severely constrained in scope and will ultimately provide a ‘snap-shot' or ‘localised' insight on the subject. Moreover, scientific knowledge advances from the accumulation of evidence rather than the results of isolated studies, except in cases where there is a virtually no research on a topic, so that the findings of individual studies assume greater importance. Depression as a topic has been heavily researched. Numerous studies have been published on antidepressants and PND. The multiplicity of published literature reviews on antidepressants/PND attests to the abundance of empirical evidence on the topic. Thus, attempting to establish the safety and efficacy of antidepressants on the basis of a single study would still require an understanding of what has been done before and current knowledge on the topic. Otherwise the researcher is in danger of merely reinventing the wheel. Thus, proper scientific protocol dictates that the researcher first begins by reviewing the literature, in order to get a birds eye view of the available evidence, identify gaps in the literature, and highlight avenues for further research (Coolican, 1994).
Effects of anti-depressants
Appleby et al (1997) conducted a randomised control trial to assess the effects of fluoxetine and cognitive-behavioural counselling on postnatal depression. Another aim was to compare fluoxetine and placebo groups, and also drug combinations and counselling. Hitherto there had been a paucity of randomised clinical trials in this area. Appleby et al (1997) question the clinical benefits of using antidepressants, given that prognosis for PND is often good, despite concerns about over-sedation, and other considerations. The study aimed to establish the optimal treatment for PND. The antidepressant of interest was the SSRI, fluoxetine. Participants were women identified at an urban health district (Manchester) as being depressed 6-8 weeks post childbirth. They completed the EPDS, and those with sufficiently high scores were interviewed using a revised clinical schedule, to identify cases of significant psychiatric depression. Women with a prior history of depression, substance abuse, severe illness that required hospitalisation, or breastfeeding, were excluded.
Participants were randomly assigned to one of four experimental conditions: fluoxetine, placebo, one counselling session, and six counselling sessions.
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