NUR110.
NURSING
Nurse wiseman 2026/2027 NURS
, NURS 305 exam 4 fall 2027 Exam
questions with correct answers
2026/2027 Edition Graded A+
what 3 hormones does the thyroid secrete?
thyroxine - T4
triiodothyronine - T3
calcitonin
what are the hormones secreted by the thyroid essential for?
proper regulation of metabolism
responsible for maintaining adequate levels of calcium in ECF
what is the normal TSH value?
what is it in hypothyroidism?
0.4-4.0 mU/L
>4.0 mU/L
what are symptoms of hypothyroidism?
hair loss
apathy
lethargy
dry skin
muscle aches
weakness
constipation
cold intolerance
receding hairline
,facial and eyelid edema
dull-blank expression
extreme fatigue
thick tongue
slow speech
anorexia
brittle hair and nails
menstrual disturbances
what is the MOA of levothyroxine (synthroid)?
cellular level:
- increase metabolic rate
- increased O2 consumption, RR, HR
- enhances growth process
cardiac:
- increases beta-adrenergic receptors
- increases sensitivity to catecholamines to increase CO
what are indications for levothyroxine?
- replace what the thyroid gland can't produce to achieve euthyroid
condition
- prevent and treat goiters
- replacement therapy for patients where thyroid was surgically
removed or destroyed by radioactive iodine to treat thyroid cancer
, - hypothyroidism in pregnancy
- myxedema coma
what are contraindications for levothyroxine?
allergy
acute/recent MI
adrenal insufficiency
hyperthyroidism
thyrotoxicosis
what are adverse effects of levothyroxine?
dysrhythmias
tachycardia
angina
MI
HF
insomnia
abd cramps
n/v
weight loss
nervousness
hyperactivity
heat intolerance
fever
what is the drug class of levothyroxine?
thyroid hormone replacement - synthetic T4
what are interactions of levothyroxine?
phenytoin, rifampin, antacids, calcium, iron, estrogen = decreases
levothyroxine effect