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Nursing Bioscience - Assignment Example

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This assignment "Nursing Bioscience" describes the possible biological causes of mental illness, identifies and briefly discusses the function of neurotransmitters in depression, briefly describes possible biological causes of mania and describes the DSM IV diagnosis of bipolar affective disorder. …
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Nursing Bioscience
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Download file to see previous pages Margaret has just been admitted to the hospital with symptoms of mania such as poor sleep, increased activity, rapid pressured speech, racing thoughts, inflated self – esteem, increased libido, and has spent her life savings on gym equipment. Margaret’s family members are very concerned and reported that her behavior is very out of character as she has never displayed these symptoms before.
Noradrenaline, adrenaline, serotonin, and dopamine primarily the noradrenaline and serotonin are monoamine neurotransmitters that are believed to play a principal role in mood and emotional behavior control (Russell, et al., 2009).
This hypothesis states that depression is precipitated by drugs that cause a decrease in monoamine, and conversely, depression is relieved by drugs that increase monoamine levels (Russell, et al., 2009).
It is therefore thought that depression is a consequence of a receptor site pathological alteration. The clinical activity of an antidepressant drug is achieved by reducing the supersensitivity of the receptors (Russell, et al., 2009).
When serotonin is unable to control the decrease of noradrenaline to levels that are abnormally low, the patient will turn out to be depressed. On the other hand, when noradrenaline levels become unusually high due decline of levels of serotonin, the patient becomes manic (Russell, et al., 2009).
In mood disorder, the early manifestation is commonly a depressive illness, and the bipolar disorder could not be diagnosed until the manic illness is triggered by treating the patient with antidepressant medications (Crawford, 2003)
Margaret was treated alone with antidepressant Fluoxetine Hydrochloride (a serotonin selective reuptake inhibitor – SSRI) for years. According to Crawford (2003), antidepressants can sometimes cause “switching” to mania, when used alone. To prevent this from switching to mania, a mood stabilizer drug is typically added to antidepressants.
DSM IV Bipolar Affective Disorder is otherwise known as manic depression. ...Download file to see next pagesRead More
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