Endocrinology Flashcards
Thyroid Antibodies specific for Hashimoto’s Thyroiditis
Anti-thyroid peroxidase Ab
Anti-Thyroglobulin Ab
Thyroid Antibodies specific for Grave’s Disease?
Thyroid Stimulating Ab
Best thyroid function screening test?
TSH
Ordered when TSH is abnormal to determine hyper or hypo thyroid function
Free T4
Low TSH (<0.1) with High FT4
Tx:
Primary Hyperthyroidism (Thyrotoxicosis)
Methimazole or Propylthiouracil PTU (Pregnant)
High TSH (>5mU) with Low FT4
Tx:
Primary Hypothyroidism
Levothyroxine
Radio Active Iodine Test decreased uptake?
Thyroiditis (Hashimoto’s De Quervian)
Radio Active Iodine Test diffuse uptake?
Grave’s Disease or adenoma
Radio Active Iodine Test hot nodule
Toxic Adenoma
Radio Active Iodine Test multiple nodules
Multinodular Goiter
Radio Active Iodine Test cold nodule
Rule Out malignancy
Clinical Manifestations of Hyperthyroidism X5
- Heat intolerance
- weight loss
- skin: warm/moist/ fine hair
- anxiety
- Hyperglycemia
Clinical Manifestations of Hypothyroidism X5
- Cold Intolerance
- Weight gain
- Skin: dry/thick/ hair loss
- depression and fatigue
- hypoglycemia
Congenital hypothyroidism–> Macroglossia, hoarse cry, mental development abnormalities: Tx:
Cretinism Tx: Levothyroxine
Hypermetabolic state: palpitations, tachycardia, A-fib, high fever, NV, psychosis, tremors. –> coma and HYTN
Tx:
Thyroid Storm (Thyrotoxicosis)
Tx: + BBs +CS (Dex) PTU/Methimazole iodine : Cooling blankets: “in that order”
MC in women and in Cold weather: 2T infection: Bradycardia, hypoglycemia, hyponatremia:
Severe from long standing hypothyroidism Tx:
Myxedema crisis
Tx: IV Levothyroxine
Hyperthyroid Disorders?
- Grave’s
- Pituitary adenoma
- Multinodular Goiter (Plummer’s)
- Toxic Adenoma
Hypothyroid disorders?
- Hashimoto’s
- Lymphocytic
- postpartum
- De Quervian’s
- Acute thyroiditis
Lid-Lag Exophthalmos, proptosis, Pretibial- myxedema: MCC is _______ 90% RAIU= Diffuse
Grave’s Disease
Nodular that causes dysphagia, dyspnea, stridor, hoarseness: RAIU Hot nodule
Toxic Adenoma
Diffuse enlarged thyroid MC in Elderly: with RAIU=patchy areas multi nodules
Multinodular Goiter (Plummer’s Disease)
inappropriate TSH elevation with FT4 elevation: RAIU diffuse uptake: MRI pituitary abnormality
Pituitary adenoma
Anti-thyroid Ab/Peroxidase Ab: Painless enlarged thyroid: MCC of hypothyroidism
Hashimoto’s
Anti-thyroid Ab/Peroxidase Ab: painless enlarged thyroid : returns to euthyroid state w/I 12-18 months Tx:
Silent Lymphocytic Thyroid
Tx: Aspirin
Anti-thyroid Ab/Peroxidase Ab: painless enlarged: occurring after pregnancy
Post Partum Thyroiditis
Medications that can induce Thyroiditis or Hypothyroidism
Amiodarone or Lithium
Painful fluctuant MC by Staph Aureus: Tx
Acute Thyroiditis Tx: Abx
MC post viral: Painful tender thyroid: Increased ESR: usually hyperthyroid acutely: Tx:
De Quervian’s Tx: Aspirin
Best initial test to evaluate nodule
Fine Needle Aspiration
MC type of thyroid nodule (90% benign)
Follicular Adenoma