Mood Disorders Flashcards
Name the Key causative factors which have been identified for depression
- Genes and gene-environment interactions
- Neurochemical factors, hormonal systems, circadian rhythms and the immune system
- Sex differences
Summarise genes and gene-environment interaction with depression
Five psychiatric disorders (major depression, bipolar disorder, schizophrenia, autism and attention deficit disorder) share most of the same genetic pattern, which interacts with prenatal environmental factors to produce changes in the brain that lead to a general psychiatric disease vulnerability. This phenomenon is called pleiotropy and it involves one gene influencing multiple seemingly unrelated disorders
Summarise neurochemical factors, hormonal systems, circadian rhythms and the immune system for depression
Major depression is not simply a consequence of low levels of serotonin or other neurotransmitters in the brain. It is likely that monoamines modulate a range of other neurobiological systems to produce major depression.
Neurotransmitter systems impact hormonal systems to produce major depression.
Important among these systems is the hypothalamic-pituitary-adrenal axis which controls the release of cortisol and thyroid hormones as well as the overall circadian rhythms (the body’s 24hr cycle of brainwave activity).
The Immune system by way of pro-inflammatory cytokines (to produce an inflammatory response) may underpin many of these mechanisms
Summarise sex differences with depression
Established that women are more than twice as likely to develop depression than men and this difference occurs across cultures. The theories that have been proposed to explain this range from biological to social and psychological factors. Male and female differences in immune system responses to stress and in turn, the initiation of depression are likely to be important. Women may be more sensitive to the social environment and show greater inflammatory response occurs, they feel more social disconnection and experience a depressed mood.
Name the key causative factors which have been identified for bipolar disorder
- Neurochemical factors
- Hormone systems
- Circadian rhythms
Summarise Neurochemical factors for bipolar disorder
The Genetic-environmental interaction produces changes in neurochemical systems. It is argued that as decreases in monoamines (the neurotransmitters serotonin, noradrenaline and dopamine) caused depression, increases in these same monoamines caused mania. This was supported by evidence that drugs such as cocaine and amphetamines stimulate dopamine activity and mimic symptoms of mania. There are many neurotransmitter systems involved and the origin of bipolar disorder remains in the complex interplay between genetic makeup and environmental factors
Summarise Hormone systems for bipolar
Cortisol and thyroid hormone levels have been found to be elevated in clients during manic episodes and even when clients are in remission from the illness. Other researchers have found differences in structural brain function (blood flow from one part of the brain to another) during elevated mood compared to periods of normal functioning.
Summarise circadian rhythms for bipolar
One of the prominent features of the manic stage of bipolar disorder is lack of sleep. In particular, clients with bipolar are sensitive to disturbances in their 24-hour circadian cycles and this a prominent feature of their illness during manic and depressive episodes
Define Affect
The observable mood (subjective data)
Define Mood
How the person feels (objective data)
Define Egocentric
The patient’s thoughts of themselves without regard to others’ thoughts and feelings
Define Elation
Great happiness or exhilaration
Define Euthymic
The typical mood range, living without mood disturbances
Define dysthymic
Low mood occurring for 2 or more years (chronic)
Define Labile
Rapidly changing emotional state
Define impulsivity
The tendency of acting without thinking based on feelings that lack forethought
Define somatisation
The physical expression of stress and emotions through the mind-body connection (throwing up from anxiety, having a headache due to stress)
Define pressure of speech
The tendency to speak rapidly and often have loud speech (motivated by the urgency that may not be apparent to the listener and can be difficult to interpret (erratic, fast, irrelevant speech)
Define anhedonia
An inability to experience pleasure from activities that were usually found enjoyable
Define psycho-motor retardation
Slowing down or hampering your mental or physical activities (slow thinking or body movements)
Name the symptoms that fall under the American Psychiatric Association criteria for Major depressive disorder
- Depressed mood
- Loss of interest or pleasure
- Significant weight loss when not dieting or weight gain
- Insomnia or hypersomnia
- Psychomotor agitation or retardation
- Fatigue or loss of energy
- Feelings of worthlessness or guilt
- Indecisiveness or difficulty concentrating
- Recurrent thoughts of death
How many symptoms over how many weeks need to be present to ‘meet’ the criteria?
Five or more symptoms need to be present over the same two-week period and must represent a change from previous functioning
What are three nursing interventions which can be used with depression
- Preform a MSE and risk assessment on them (always start with assessment)
- Treat anger and negative thinking as symptoms of the illness, not the person targeting you
- Make positive decisions for them when they are unwilling to make the decision for themselves (time to get out of bed)
What is the rationale for performing a mental status exam and a risk assessment?
To gather an understanding of what the client is feeling right now and understanding where the mental state is at the point in time
