A nurse is discussing the theories that explain the biological basis of Major Depressive Disorder (MDD) with a group of nursing students. Which theory suggests that depression is caused by an imbalance of neurotransmitters in the brain that regulate mood, motivation, reward, cognition, and stress response?
Genetic theory.
Neuroendocrine theory.
Neurotransmitter theory.
Environmental theory.
The Correct Answer is C
Choice A rationale:
Genetic theory suggests that a person's genetic makeup can predispose them to develop depression, but it does not specifically address the role of neurotransmitters in depression. While genetics can contribute to the risk of major depressive disorder (MDD), this choice doesn't focus on the neurotransmitter imbalances.
Choice B rationale:
Neuroendocrine theory pertains to the role of hormones in depression, particularly abnormalities in the hypothalamic-pituitary-adrenal (HPA) axis. While hormones play a role in mood regulation, this theory does not primarily revolve around neurotransmitter imbalances.
Choice C rationale:
Neurotransmitter theory proposes that an imbalance of neurotransmitters, such as serotonin, norepinephrine, and dopamine, contributes to the development of major depressive disorder. This theory aligns with the idea that these neurotransmitters are responsible for regulating mood, motivation, reward, cognition, and stress response.
Choice D rationale:
Environmental theory suggests that external factors, such as life events and stressors, contribute to the development of depression. While environment can indeed influence depression, it does not specifically address the neurotransmitter imbalances that are central to this question.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E"]
Explanation
Choice A rationale:
Social support refers to the network of family, friends, and community that provide emotional and practical assistance. Depression can be influenced by inadequate social support, as having a strong support system can buffer against the development and exacerbation of depressive symptoms.
Choice B rationale:
Personalization involves attributing external events to oneself, often in a negative manner. While this cognitive distortion is relevant to depression, it is not mentioned in the question stem and does not directly relate to cognitive processes influenced by depression.
Choice C rationale:
Cognitive distortions are irrational and negative thought patterns that are common in depression. These distortions contribute to the maintenance of depressive symptoms. Examples include all-or-nothing thinking, overgeneralization, and catastrophizing.
Choice D rationale:
Catastrophizing involves magnifying the negative significance of events. While it can contribute to depressive thought patterns, it is not as central to cognitive processes influenced by depression as cognitive distortions are.
Choice E rationale:
Interpersonal relationships are affected by depression and can also contribute to its development. The question does not focus on the effects of depression on relationships, but rather on the factors that can influence or be influenced by depression.
Correct Answer is D
Explanation
Choice A rationale:
Signs of normal bereavement. Bereavement refers to the period of grief and mourning after the loss of a loved one. While fatigue and feelings of worthlessness can be experienced during bereavement, difficulty concentrating is not a typical sign. Additionally, bereavement-related symptoms typically improve over time as the individual processes their loss. The combination of extreme fatigue, difficulty concentrating, and thoughts of worthlessness suggests a more severe and persistent condition than normal bereavement.
Choice B rationale:
Symptoms of bipolar disorder. Bipolar disorder is characterized by alternating episodes of depression and mania (or hypomania). The client's symptoms of extreme fatigue, difficulty concentrating, and thoughts of worthlessness are primarily indicative of a depressive episode, which is only one aspect of bipolar disorder. Bipolar disorder requires the presence of manic or hypomanic episodes, which are not mentioned in the client's presentation.
Choice C rationale:
Indicators of substance-induced mood disorder. Substance-induced mood disorder occurs as a result of substance use or withdrawal and involves changes in mood and affect. While substances can lead to symptoms similar to depression, the combination of symptoms presented by the client (fatigue, difficulty concentrating, thoughts of worthlessness) is more indicative of a primary mood disorder rather than one directly caused by substance use.
Choice D rationale:
Criteria for diagnosing MDD according to DSM-5. The client's symptoms of extreme fatigue, difficulty concentrating, and thoughts of worthlessness align with the criteria for Major Depressive Disorder (MDD) as defined in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). These criteria include the presence of specific symptoms for a specified duration, causing significant impairment in functioning. The symptoms should not be better explained by other conditions or substances. In this case, the client's presentation closely matches the criteria for diagnosing MDD.
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