A nurse is explaining the role of neurotransmitters in the pathophysiology of MDD to a group of nursing students. Which neurotransmitters are mentioned in the text as being involved in regulating mood, motivation, reward, cognition, and stress response?

Acetylcholine and gamma-aminobutyric acid (GABA).

Glutamate and epinephrine.

Serotonin, dopamine, and norepinephrine.

Endorphins and oxytocin.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

Acetylcholine and gamma-aminobutyric acid (GABA) are not the primary neurotransmitters involved in regulating mood, motivation, reward, cognition, and stress response. Acetylcholine plays a role in memory and muscle control, while GABA is an inhibitory neurotransmitter that helps regulate anxiety and sleep. These neurotransmitters are not as closely associated with the functions mentioned in the question.

Choice B rationale:

Glutamate is a major excitatory neurotransmitter in the central nervous system, and epinephrine (also known as adrenaline) is a hormone that prepares the body for the fight-or-flight response. While both glutamate and epinephrine play important roles in various physiological responses, they are not primarily responsible for regulating mood, motivation, reward, cognition, and stress response as mentioned in the question.

Choice C rationale:

Serotonin, dopamine, and norepinephrine are all key neurotransmitters involved in the regulation of mood, motivation, reward, cognition, and stress response. These neurotransmitters have been extensively studied in the context of mood disorders like Major Depressive Disorder (MDD). Serotonin is often associated with feelings of well-being and happiness, dopamine is linked to pleasure and reward pathways, and norepinephrine is involved in the body's stress response. Imbalances in these neurotransmitters have been implicated in the development of mood disorders.

Choice D rationale:

Endorphins and oxytocin are important neurotransmitters, but they are not as directly related to the regulation of mood, motivation, reward, cognition, and stress response as the neurotransmitters mentioned in choice C. Endorphins are known for their role in pain modulation and feelings of pleasure, while oxytocin is often referred to as the "bonding hormone" and is associated with social connections and childbirth.

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Correct Answer is ["A"]

Explanation

Choice A rationale:

Electroconvulsive therapy (ECT) and other somatic therapies are considered main treatment options for Major Depressive Disorder (MDD). ECT involves passing electric currents through the brain to induce controlled seizures, and it's often used in severe cases of depression that haven't responded to other treatments. Somatic therapies encompass a range of interventions that directly target the body, such as transcranial magnetic stimulation (TMS) and vagus nerve stimulation (VNS). These treatments are supported by extensive research and clinical evidence, particularly for cases where pharmacological interventions haven't been effective or suitable.

Choice B rationale:

Pharmacological interventions are indeed a mainstay in MDD treatment. However, while they are effective for many individuals, they might not work for everyone and can have side effects. Hence, the treatment approach should be tailored to the individual's needs and preferences.

Choice C rationale:

Herbal supplements are not considered main treatment options for MDD according to established clinical guidelines. While some herbal supplements might have anecdotal support for mood enhancement, their efficacy and safety are not well-established through rigorous scientific research and clinical trials.

Choice D rationale:

Physical exercise has been shown to have a positive impact on mood and can be a beneficial adjunct to MDD treatment. However, it's typically not considered a standalone main treatment option. Rather, it's often recommended as a complementary approach alongside other evidence-based treatments.

Choice E rationale:

Mindfulness-based cognitive therapy (MBCT) is a psychological approach that combines mindfulness meditation with cognitive behavioral techniques. While MBCT has shown promise in preventing relapse for individuals with recurrent depression, it's usually used as a psychotherapeutic adjunct to other main treatments like pharmacological interventions or psychotherapy.

A. "Chronic stress can lead to hyperactivity of the HPA axis, resulting in elevated levels of cortisol that can support neuronal growth and survival.". B. "Chronic stress can lead to hypoactivity of the HPA axis, resulting in reduced levels of cortisol that enhance neurogenesis and synaptic plasticity.". C. "Chronic stress can lead to hyperactivity of the HPA axis, resulting in elevated levels of cortisol that can impair neurogenesis and synaptic plasticity.". D. "Chronic stress can lead to hypoactivity of the HPA axis, resulting in reduced levels of cortisol that improve neurotrophic factors and cognitive function.".

Correct Answer is C

Explanation

Choice A rationale:

Chronic stress is known to activate the Hypothalamic-Pituitary-Adrenal (HPA) axis, which leads to increased cortisol production. While cortisol is important for various physiological functions, chronic elevation of cortisol due to stress can actually have detrimental effects on the brain. Elevated cortisol levels have been associated with impaired neurogenesis (the formation of new neurons) and synaptic plasticity (the ability of synapses to change and adapt), both of which play crucial roles in maintaining cognitive function and mental health.

Choice B rationale:

This statement is not accurate. Chronic stress typically leads to hyperactivity, not hypoactivity, of the HPA axis, resulting in increased levels of cortisol. The increased cortisol levels can negatively impact neurogenesis and synaptic plasticity, which are key factors in depression and cognitive function.

Choice C rationale:

This is the correct statement. Chronic stress triggers hyperactivity of the HPA axis, causing elevated levels of cortisol. While cortisol is meant to help the body cope with stress in the short term, chronic elevation can lead to adverse effects on the brain. High cortisol levels have been linked to impaired neurogenesis and synaptic plasticity, contributing to the development of depression and cognitive deficits.

Choice D rationale:

This statement is not accurate. Chronic stress tends to lead to hyperactivity of the HPA axis and elevated cortisol levels. Reduced cortisol levels, as suggested in this choice, are not commonly associated with chronic stress and its impact on depression.

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A nurse is explaining the role of neurotransmitters in the pathophysiology of MDD to a group of nursing students. Which neurotransmitters are mentioned in the text as being involved in regulating mood, motivation, reward, cognition, and stress response?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

(Select All That Apply): A nurse is educating a group of clients about the treatment approaches for MDD. Which of the following modalities are considered main treatment options for MDD according to the text? Select all that apply.

Correct Answer is ["A"]

Explanation

A client is curious about the impact of chronic stress on the development of depression. Which statement accurately reflects the relationship between chronic stress and depression according to the text?

Correct Answer is C

Explanation

(Select All That Apply): A nurse is providing care for a client with suspected major depressive disorder (MDD). Which of the following are risk factors for developing MDD? Select all that apply.

A client asks a nurse about the differences between major depressive disorder (MDD) and dysthymia. Which of the following responses by the nurse is accurate?

A nurse is assessing a client who has been experiencing persistent feelings of sadness, fatigue, and difficulty concentrating. The client denies any history of manic episodes. Which of the following conditions should the nurse consider as a possible differential diagnosis for this client?

(Select All That Apply): A nurse is assessing a client for major depressive disorder (MDD). Which of the following signs and symptoms are consistent with the clinical presentation of MDD? Select all that apply.

A client is sharing their experiences with a nurse. The client states, "I just can't seem to enjoy anything anymore. Even activities I used to love don't bring me pleasure." This statement by the client is indicative of:

A client is experiencing persistent feelings of sadness, guilt, and worthlessness. They also report significant weight loss and insomnia. The nurse suspects the client may have:

A nurse is providing education to a group of nursing students about major depressive disorder (MDD). Which of the following statements accurately describes a characteristic of MDD?

A client wants to understand the factors that contribute to the development of depression. Which of the following factors are mentioned in the text as potential contributors to depression?