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NURS 6003 M5 questions with correct answers
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NURS 6003 M5 questions with correct answers
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NURS 6003 M5 questions with correct answersnegative feedback system Correct Answer-most common as it is the
bodies internal thermostat. When there is too much of a hormone, for
example the thyroid is producing too much t3/t4, the thyroid tells the
hypothalamus via negative feedback to produce less TRH. As a result
there is a decrease in TSH from anterior pituitary.
positive feedback system Correct Answer-less common and when a
hormone is stimulated, it just keeps producing until the stimulus stops.
An example of this is oxytocin in milk production. When the baby feeds,
more oxytocin is released which produces more milk. If the baby stops
suckling, the oxytocin production will dwindle and in turn so will the
milk.
Why TSH level is low in hyperthyroidism Correct Answer-the negative
feedback system begins to compensate trying to decrease the production
of t3/t4.
Why TSH level high in hypothyroidism Correct Answer-the negative
feedback system begins to compensate by trying to increase the
production of t3/t4
Where is ADH formed Correct Answer-formed in the hypothalamus and
stored in the posterior pituitary
Actions of ADH Correct Answer-inhibits the excretion of water by
increasing the absorption of water in the kidneys
, Patho of SIADH Correct Answer-overproduction of ADH leading to the
reabsorption of too much water which can cause low sodium
concentration, fluid overload, and decreased osmolarity
s/s SIADH Correct Answer-include edema, lethargy, weakness, and
seizures. This can be diagnosed by a urine osmolarity that is greater than
serum osmolarity
treatment SIADH Correct Answer-treating the underlying cause
(pulmonary disease, CNS disorders), fluid restriction or hypertonic
saline if needed, and use of demeclocycline which is an ADH antagonist
Insufficient release of ADH Correct Answer-Diabetes Insipidus
Diabetes Insipidus pathophysiology Correct Answer-Fifty percent of the
time, diabetes insipidus is idiopathic meaning there is an unknown
cause, the other half is due to surgical trauma
Diabetes Insipidus s/s Correct Answer-opposite of SIADH, polyuria,
hypernatremia, and excessive thirst.
Diabetes Insipidus tx Correct Answer-Treatment is broken into
categories for treating central DI (ADH deficiency) vs nephrogenic DI
(renal tubules insensitive to ADH).
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