Thyroid, Corticosteroids, Gonadal hormones Flashcards
Treatment for myxedema coma?
Levothyroxine IV
Plus IV Hydrocort if with adrenal or pituitary insufficiency
Medical emergency presenting as end stage of untreated HYPOthyroidism?
Hypogly, thermia, natremia, ventilation
Myxedema coma
DOC for pregnant hyperthyroidism?
PTU
Block TPO, dec organification.
Also inhibit peripheral conversion of T4 to T3
PTU given together with what drug during first 3-4 weeks for symptomatic relief?
Beta blockers
DOC for NONpregnant hyperthyroidism?
Methimazole
Taken OD - better compliance
PTU taken TID
Prenatal exposure to methimazole may cause?
“Met a CUTe guy!”
Aplasia cutis congenita
Congenital focal absence of epidermis
Thioamides PTU and Methimazole have this common side effect?
Agranulocytosis
Acute severe neutropenia
Treatment of thioamide induced agranulocytosis?
Discontinue drug
Give GCSF to accelerate recovery
Definitive treatment of hyperthyroidism, contraindicated in pregnant and nursing women?
RAI
Most common AE of RAI?
Permanent hypothyroidism
By destroying thyroid parenchyma
Used in preop thyroidectomy to decrease size and vascularity?
Potassium iodide (Lugol’s)
Lugol’s also used in?
Radiation prophylaxis
To prevent radiation-induced papillary thyroid cancer
Common AE of Lugol’s?
Iodism
Acneiform rash, swollen salivary glands, mucous membrane ulcerations
Prenatal exposure to KI causes?
Fetal goiter
Wolf Chaikoff vs Jod Basedow
WC: ingest iodine, dec TH via negative feedback
JB: ingest iodine, inc TH
What causes drug-induced HYPERthyroidism?
MAC
1. Methadone 2. Amiodarone 3. Clofibrate
Amiodarone causes hypothy (block t4 to t3) and hyperthy (inflamm, leak TH). Treatment?
Hypo: Levothyroxine
Hyper: PTU, Methimazole, Steroids (anti-inflamm)
Which drugs inhibit peripheral conversion of T4 to T3?
- PTU
- Propranolol
- Hydrocort
Treatment for thyroid storm?
PTU to block hormone synthesis (PTU first to prevent JB).
SSKI to retard release of TH.
Propranolol for symptomatic relief.
Hydrocortisone to protect against shock and to inhibit peripheral conversion
Criteria used for thyroid storm?
Burch Wartofsky
Short acting, low potenct GC used for acute adrenal insufficiency, contact derm, thyroid storm and status asthmaticus?
Hydrocortisone
GC used for brain swelling and post chemo emesis?
Prednisone
Used to dec ICP only if caused by brain tumor