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NURS 5461 DEPRESSION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED $9.99   Add to cart

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NURS 5461 DEPRESSION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED

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NURS 5461 DEPRESSION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED Limbic System. amygdala Gauge and modulate emotions/ thoughts of death and guilt, Limbic system hippocampus Affects memory/concentration less size/ neurogenesis in depression Frontal cortex Linked to depressed m...

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  • November 2, 2024
  • 11
  • 2024/2025
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NURS 5461 DEPRESSION EXAM QUESTIONS AND ANSWERS

WITH COMPLETE SOLUTIONS VERIFIED

Limbic System. amygdala

Gauge and modulate emotions/ thoughts of death and guilt,

Limbic system hippocampus

Affects memory/concentration less size/ neurogenesis in depression

Frontal cortex

Linked to depressed mood and problems concentrating. Reduced in size and

hyopactive in D, difficulty in thinking/planning-->rely on amygdala so response is

emotion based

Basal ganglia

Linked to psychomotor agitation or retardation

Hypothalamus

r/t loss of appetite, weight loss anhedonia (loss of pleasure) -- neurovegetative signs.

Neurotransmitters and depression

↓Serotonin: mood, sleep, impulsivity symptoms ↓Dopamine: pleasure, reward,

psychomotor activity, fatigue, low energy, cognition ↓Norepinephrine: mood, arousal,

appetite , planning, concentrating ↓ GABA: anxiety, agitation of depression ↑glutamate

& NMDA receptors in frontal lobe (↑ neuronal cell death

Glial cells

, ↓ in number and density in depression Glial cells protect neurons by stabilizing

glutamate & supplying glucose to the neurons (stick like glue)

Synthesize & release neurotropic factors (Brain Derived Neurotropic Factor: BDNF)

these can stabilize with ADM-

Extra cellular glutamate accumulates

Excess of glucocorticoids (HPA axis) Decreased GLIA PFC Fewer glial glutamate

transporters Neurons get exposed to glutamate and can no longer function Progressive

depression Damage to neurons (neurotoxicity) 2x greater risk of dementia with

depression! not enough stabilization with GABA

PFC hyperactivity

↑CRF released from hypothalamus ACTH released from pituitary Glucocorticoids

(cortisol) released from adrenal cortex Excessive glucocorticoid release may cause

hippo-campal atrophy Atrophy leads to chronic activation of HPA axisDepression,

anxiety result. Antidepressants can reverse

Hypothalamic Dysregulation Circadian Rhythms of Sleep

Delayed sleep onset

Shortened REM latency

Increased length of 1st REM period

Abnormal delta sleep

May be reported as lack of sleep or atypical feature

of hypersomnia

Antidepressant meds treat circadian dysregulation

and can restore normal sleep architecture

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