Endocrine Flashcards
Thyroid gland
• hormones?
• what the hormones do?
• what do we need in our diet to make hormones?
- produces 3 hormones - T3, T4, Calcitonin
- Calcitonin ↓ serum calcium levels by taking calcium out of blood and push back into bones
- Thyroid hormones give us ENERGY
- Need dietary IODINE to make hormones
Hyperthyroid (Graves’ Disease) S/SX
- nervous
- irritable
- attention span ↓
- appetite ↑
- weight ↓
- sweaty/hot
- exophthalmos (bulging eyes, irreversible)
- GI FAST (diarrhea, hyperactive bowel sounds)
- BP and Pulse ↑
- Arrhythmia/palpitations (d/t ↑ workload in heart)
- Thyroid size ENLARGES
Hyperthyroid (Graves’ Disease) Diagnosis
• serum?
• scan? what to discontinue prior? how long to wait to restart meds?
• ↑ Thyroxine (T4), ↓ TSH
• Thyroid scan
—Discontinue any iodine-containing meds 1 WEEK prior to thyroid scan and wait 6 WEEKS to restart meds
• Ultrasound/MRI/CT
Hyperthyroid (Graves’ Disease) treatment
Anti-thyroids
methimazole (Tapazole), propylthiouracil (PTU)
• stops thyroid from making thyroid hormones
• used pre-op to stun thyroid
• want client to be EUTHYROID
Hyperthyroid (Graves’ Disease) treatment
Iodine Compounds
• important teaching when taking it?
potassium iodine (SSKI and Lugol’s solution)
• DECREASE size and vascularity of gland
• ALL endocrine glands are very VASCULAR
• Give in milk or juice and use a straw because it STAINS the teeth
Hyperthyroid (Graves' Disease) treatment Beta Blockers (supportive therapy)
propranolol (Inderal) • ↓ myocardial contractility • ↓ cardiac output • ↓ HR, BP • ↓ anxiety
Hyperthyroid (Graves' Disease) treatment Radioactive Iodine Therapy • dose? • route? • action? • radioactive precautions
- one dose
- PO (liquid or tablet form)
- destroys thyroid cells
- stay away from babies for 1 WEEK and Don’t KISS anyone for 1 WEEK
Do not give BETA BLOCKERS to ____ or ____
asthmatics (cause bronchoconstriction); or diabetics (mask s/sx of hypoglycemia)
Amiodarone (Cordarone) antiarrhythmic drug, contains high levels of ____ and may affect ____ function
iodine, thyroid
HYPERTHYROIDISM MEDICAL EMERGENCY
Thyroid storm (thyrotoxicosis and thyrotoxic crisis)
–Hyperthyroidism times 100!!!!
• ↑ temp, BP, HR
• could be rebound effect post-radioactive iodine
Surgery: Thyroidectomy (partial/complete) • Post-op PRIORITY? • Assess? • Trach set at bedside, why? • Teaching/Nursing interventions?
• Priority: REPORT feelings of PRESSURE; Check bleeding from front and back
• ASSESS recurrent laryngeal nerve damage → listen for HOARSENESS → could lead to VOCAL PARALYSIS;
when there’s paralysis of both cords = airway obstruction → NEED TRACH!!!
• Trach for:
- swelling
- laryngeal nerve damage (vocal cord paralysis)
- Hypocalcemia – assess for parathyroid removal; s/sx (tight and rigid muscles); NOT SEDATED
• Teach how to support neck; Put personal items close to client; HOB elevated; (pre/post op) client needs MORE CALORIES
Hypothyroid S/SX
• no energy
• fatigue
• no expression
• speech slow, slurred
• weight ↑
• myxedema (facial puffiness)
• GI slow (constipation, hypoactive bowel sounds)
• Cold (bring blanket, wear warm clothes–NOT HEATING PAD)
• Amernorrhea
***may take care of totally immobile client
Hypothyroid Diagnosis
↓ Thyroxine (T4), ↑ TSH
Hypothyroid Treatment
• med? important thing to know about dosing when starting on these meds?
• do they take these meds forever?
• on empty or full stomach?
• hypothyroidism clients tend to have ____;
• what happens to their energy
• levothyroxine (Synthroid), liothyronine (Cytomel)
—start w/ LOW dose then gradually increase
• take on empty stomach
• tend to have CAD (worry about MI when meds are started) – d/t ↑LDL, chest pain/rhythm changes
• YES, take meds forever
• energy ↑
Parathyroid Problems
• secrete what hormone? function?
• too much of this hormone?
• too little of this hormone?
- secrete PTH = pull calcium from bone and place it in blood = serum Calcium ↑
- too much PTH = serum Calcium ↑
- don’t have PTH = serum Calcium ↓
Hyperparathyroidism = ____ = ____
S/SX
Treatment (what surgery? what to monitor post-op?)
Hyperparathyroidism = HYPERCALCEMIA = HYPOPHOSPHATEMIA
S/SX • ↑ PTH • serum Calcium ↑ • serum Phosphate ↓ • SEDATED
Treatment
• Partial parathyroidectomy → take out 2 parathyroids = PTH secretion ↓
• monitor for HYPOCALCEMIA (tight, rigid muscles = tetany)
Hypoparathyroidism = ____ = ____
S/SX
Treatment (what meds? any precautions?)
Hypoparathyroidism = HYPOCALCEMIA = HYPERPHOSPHATEMIA
S/SX • not enough PTH • serum Calcium ↓ • serum Phosphate ↑ • NOT sedated
Treatment
• IV Calcium (give SLOWLY, put on cardiac monitor)
• Phosphorus binding drug (sevelamer, calcium acetate)
Adrenal glands
• function?
• 2 parts?
- handle stress
* adrenal medulla and adrenal cortex
Adrenal Medulla Problem: Pheochromocytoma
• what is it?
• S/Sx?
• benign tumor = secrete epi and norepi in boluses
• S/SX
↑ BP, ↑ HR, Palpitations, Flushing/extremely diaphoretic, Headache
Adrenal Medulla Problem: Pheochromocytoma
Diagnosis
• called what?
• what’s done to screen for high levels of epi and norepi?
• throw away what? keep what?
• avoid what? must be ____?
- Catecholamine levels: VMA (vanillylmandelic acid) test or Metanephrine (MN) test – 24 hour urine test
- 24 hr urine specimen is done to screen for ↑ levels of epi and norepi (catecholamines)
- w/ 24 hr urine – throw away FIRST voiding, keep LAST voiding
- Avoid activites that ↑ epi and norepi (NO STRESS) – nor smoking/running, must be calm
Foods that alter the VMA and MN test
how long to avoid these?
anything w/ vanilla caffeine Vitamin B fruit juices bananas
***avoid for several days to a week
Adrenal Medulla Problem: Pheochromocytoma
Treatment
Surgery to remove tumors
Adrenal Medulla Problem: Pheochromocytoma
ALERT
AVOID PALPATING ABDOMEN → cause sudden release of catecholamines (epi, norepi) = SEVERE HTN
Adrenal Cortex
• what steroids are secreted?
- Glucocorticoids
- Mineralocorticoids
- Sex hormones
Glucocorticoids
• 4 functions?
1) Changes mood (depressed, psychotic, euphoric, insomnia
2) Alter defense mechanisms
- immunosuppressed; high risk for infection
3) Breakdown fats and proteins
4) Inhibit insulin
- Hyperglycemic; Do bg monitoring
Mineralocorticoids
Aldosterone
retain SODIUM and WATER, lose Potassium
Sex hormones
• too many?
• not enough?
too many
• hirsutism (Facial hair)
• acne
• irregular menstrual cycle
not enough
• ↓ axillary/pubic hair
• ↓ libido
↑ ACTH = ____ level
Too many steroids = Hyper_____
Cortisol
Hypercortisolism
Adrenal Cortex problems
- not enough steroids
- shock
- hyperkalemia
- hypoglycemia
Addison’s Disease
• Patho
adrenocortical insufficiency–not enough steroids
• not enough glucocorticoids, mineralocorticoids, sex hormones
Addison’s Disease
S/SX
- extreme fatigue
- N/V/D
- anorexia/weight loss
- hypotension (↓ BP)
- confusion
- ↓ Na, ↓ bg (hypoglycemia)
- ↑ K
- Hyperpigmentation-BRONZING color of skin and mucous membranes
- white patchy area of depigmented skin (VITILIGO)