Cushing's Disease Flashcards
Adrenal Cortex Hormones:
Glucocorticoids regulate metabolism, increase blood glucose levels, and are critical in the physiologic stress response. The primary glucocorticoid is _______.
Mineralocorticoids regulate sodium and potassium balance. The primary mineralocorticoid is ________.
Androgens contribute to growth and development in both genders and to sexual activity in adult women.
cortisol
aldosterone
Etiology and Pathophysiology of Cushing’s Syndrome:
Cushing syndrome is a clinical condition that results from chronic exposure to excess corticosteroids, particularly glucocorticoids.
Several conditions can cause Cushing syndrome. The most common cause is iatrogenic administration of exogenous corticosteroids (e.g., ________).
prednisone
Etiology and Pathophysiology of Cushing’s Syndrome:
Approximately 85% of the cases of endogenous Cushing syndrome are due to an adrenocorticotropic hormone (ACTH)–secreting pituitary ______ which is CUSHING’S disease.
Other causes of Cushing syndrome include adrenal tumors and ______ ACTH production by tumors (usually of the lung or pancreas) outside of the hypothalamic-pituitary-adrenal axis.
adenoma
ectopic
Clinical Manifestations of Cushing’s Syndrome:
The clinical presentation may be the first indication of Cushing syndrome: (1) centripetal (truncal) obesity or generalized obesity including supraclavicular and dorsocervical fat pads (buffalo hump) (2) “moon face” (3) purplish red striae (usually depressed below the skin surface) on the abdomen, breast, or buttocks; (4) ______ in women and menstrual disorders in women; (5) ________; and (6) ________.
hirsutism
hypertension
Hypokalemia
Clinical Manifestations of Cushing’s Syndrome:
Loss of libido is seen in both men and women.
________: this include a rounded face (“moon facies”) with thin, reddened skin.
________: broad, purple striae; and easy bruising (image: left antecubital fossa)
Moon Face
Truncal obesity
Clinical Manifestations of Cushing’s Syndrome:
Manifestations of Cushing syndrome can be seen in most body systems and are related to excess levels of corticosteroids.
Although signs of _______ excess usually predominate, symptoms of mineralocorticoid and androgen excess may also be seen.
Corticosteroid _____ causes pronounced changes in physical appearance.
glucocorticoid
excess
Clinical Manifestations of Cushing’s Syndrome:
Excess Glucocorticoids:
_______, the most common feature, results from the accumulation of adipose tissue in the trunk, face, and cervical spine area.
_______ occurs because of glucose intolerance (associated with cortisol-induced insulin resistance) and increased gluconeogenesis by the liver.
Weight gain
Hyperglycemia
Clinical Manifestations of Cushing’s Syndrome:
Excess Glucocorticoids:
Muscle wasting causes weakness, especially in the extremities. A loss of bone matrix leads to osteoporosis and back pain.The loss of _____ makes the skin weaker and thinner, and it bruises easily. ______ processes lead to a delay in wound healing. Irritability, anxiety, euphoria, and occasionally psychosis may also occur.
collagen
Catabolic
Clinical Manifestations of Cushing’s Syndrome:
Excess Mineralcorticoids:
_________ EXCESS may cause hypertension (secondary to fluid retention)
Excess Androgens:
Adrenal androgen EXCESS may cause severe acne, _____ in women, and feminization in men. Menstrual disorders and hirsutism in women and gynecomastia and impotence in men occur more commonly with adrenal carcinomas.
Mineralocorticoid
virilizationin
Diagnostic Tests for Cushing's Syndrome: Plasma cortisol (the primary glucocorticoid) Levels may be \_\_\_\_\_\_\_\_, often seen with a loss of diurnal variation. When Cushing syndrome is suspected, a 24-hour urine collection for free cortisol is done. Urine cortisol levels higher than the normal range of \_\_\_ to \_\_\_\_\_mcg in 24 hours indicates that the patient has Cushing syndrome. If results are borderline, a low-dose dexamethasone suppression test is done. In a low dose dexamethasone test 0.5 mg is taken orally every 6 hours, for a total of 8 doses, starting at 6 am. A 24 hour urine for free cortisol is done the \_\_\_\_\_ day.
elevated
80 to 120 mcg
next
Diagnostic Tests for Cushing’s Syndrome:
Urine levels of _______ may be elevated.
_____ results can occur with depression and with certain drugs.
CT scan and MRI of the pituitary and adrenal glands may be done.
17-ketosteroids
False-positive
Diagnostic Tests for Cushing’s Syndrome:
Plasma _____ levels may be low, normal, or elevated, depending on the underlying cause of Cushing syndrome.
High or normal ACTH levels indicates that the patient has ________ (this is caused by pituitary etiology), whereas low or undetectable levels indicate the patient has ______ (this is cause by an adrenal or medication etiology).
______ and ________ are seen in ectopic ACTH syndrome and adrenal carcinoma.
ACTH
Cushing disease
Cushing syndrome
Hypokalemia and alkalosis
Collaborative Care of Cushing’s Syndrome:
If Cushing syndrome has developed during the course of prolonged administration of ____, the following alternatives may be implemented:
1. Gradual discontinuation of corticosteroid therapy.
2. Reduction of the corticosteroid dose.
3. Conversion to an _____-day regimen.
corticosteroids (e.g., prednisone)
alternate
Collaborative Care of Cushing’s Syndrome:
Gradual ______ of the corticosteroids is necessary to avoid potentially life-threatening adrenal insufficiency.
An alternate-day regimen is one in which twice the daily dosage of a shorter-acting corticosteroid is given every other morning to minimize hypothalamic-pituitary-adrenal suppression, growth suppression, and altered appearance. This regimen is NOT used when the corticosteroids are given as ______ therapy.
tapering
hormone replacement therapy
Collaborative Care of Cushing’s Syndrome:
Surgical interventions are done based on whether it is caused by Adrenal or Pituitary tumors.
_______ – procedure that can be preformed to remove either unilateral or bilateral adrenal glands
________ - procedure that can be preformed to remove Pituitary tumors.
Adrenelectomy
Hypophysectomy
Nursing Assessment of Cushing’s Syndrome:
Subjective Data:
Obtain the following important health information from the patient:
Past health history: pituitary tumor (Cushing disease); adrenal, pancreatic, or pulmonary neoplasms; ______; frequent infections
Medications: use of corticosteroids
GI bleeding
Nursing Assessment of Cushing’s Syndrome:
Subjective Data:
Obtain the following important health information related to pertinent functional health patterns:
Health perception–health management: malaise
Nutritional-metabolic: _______ gain, anorexia
Elimination: polyuria; ________ wound healing, easy bruising.
weight
prolonged
Nursing Assessment of Cushing’s Syndrome:
Subjective Data:
Obtain the following important health information related to pertinent functional health patterns:
Activity-exercise: weakness, fatigue
Sleep: insomnia, poor sleep quality
Cognitive-perceptual: headache; back, joint, bone, and ____ pain; poor _______ and memory
rib
concentration