Ch 48 Pituitary and adrenal disorders Flashcards
Posterior pituitary secretes what
Antidiuretic hormone (ADH), or vasopressin Oxytocin
Posterior pituitary(smaller lobe) is also known as
neurohypophysis
What causes hyperpituitarism
excess production of one or more of the anterior
pituitary hormones
Common factor of the hyperpituitarism is:
presence of a pituitary adenoma
Hyperpituitarism can lead to:
Growth hormone and prolactin often in excess
Overproduction of growth hormone can lead to
Gigantism or acromegaly
Increased growth hormone without closed epiphysis plate causes what?
Makes the patient get taller leading to gigatism
Overproduction of prolactin causes
Prolactinemia
When the patient gets a tumor causing growth hormone to be released, it can no longer affect the epiphysis plate so it makes the bones wider and leads to:
Acromegaly
More common than gigantism
Acromegaly
Most patients with acromegaly
have pituitary macroadenomas that secrete excess growth hormone
GH production occurs AFTER epiphyseal closure so bones increase in thickness and width instead of longitudinal growth
Acromegaly
what systems in the body does patients with acromegaly affect in patients
Cerebrovascular, gastrointestinal, nervous system and gastro-urinary system.
Assessment of acromegaly
Enlargement of the jaw, forehead, nose, tongue, and teeth, hands, and feet.
A soft doughy, damp handshake is characteristic of this disorder
Assessment of acromegaly
Assess for a deep, hollow sounding voice
Assess for hemianopsia and loss of visual acuity