ENDOCRINE Flashcards
What can occur from a very traumatic birth regarding growth hormone?
GH deficiency – why we check the growth charts
What happens to growth hormones in hypopituitarism?
Children – serious growth disturbance
What might GnRh cause?
lack of sexual organ development
If you’re considering a growth hormone deficiency, what do you check?
GH levels, provocative tests, and imaging
What type of provocative test could stimulate growth hormone levels, and see if you’re getting the proper response?
Insulin
After giving growth hormone and getting levels normalized, when do we need to monitor levels again
Once growth is completed
What is acromegaly?
When excessive growth hormone is released
What causes acromegaly?
Almost always from a pituitary adenoma
What is specific about the adenoma of gigantism?
Develops BEFORE closure of epiphyses
What is specific about the adenoma of acromegaly?
Develops AFTER closure of epiphyses
How do we treat excessive growth hormone?
Somatostatin
What does prolactin do?
Induces lactation during pregnancy
What controls prolactin?
Always being inhibited by dopamine
What is the role of thyroid hormone, especially at birth?
Crucial for cell differentiation – if absent at birth can cause severe mental retardation = “creatinism”
What must you always check on PE in someone you suspect with a thyroid disorder?
visual/eyes, weight, scalp/hair, neck, skin, heart, abdomen, extremities, reflexes and thyroid exam neuro
What’s the normal range for TSH?
0.27-4.2
If TSH is low, what does that usually indicate?
Hyperthyroidism (at the gland level = primary)
If TSH is high, what does that usually indicate?
Hypothyroidism
What would cause hypothyroidism?
Congenital = In utero exposure to radioiodine
Acquired (later in life) = Hashimoto’s, irradiation, too much iodine
If a child presents with a thick tongue, hypotonia, large fontanel’s, dry skin, with a hoarse cry, and constipation, what diagnosis do you think?
Hypothyroidism
What is hypothyroidism?
Autoimmune, AKA Hashimoto’s Thyroiditis
What labs would we get for hypothyroidism?
TSH, decreased T4, and anti-thyroid anti-bodies (for Hashimoto’s specifically)
How do we prevent and treat congenital hypothyroidism?
Early detection – required at birth!
Replacement therapy (10-15uq/day of Levothyroxine)
Continue to monitor!