An Angina Pectoris patient begins taking nifedipine [Procardia] a calcium channel blocker, along with metoprolol, to treat hypertension. The nurse understands that metoprolol is used to:

(A) Decreased Skin Turgor: Seen in dehydration, not fluid overload.

(B) Jugular Venous Distension (JVD): A classic sign of fluid overload due to increased central venous pressure and right-sided heart strain.

(C) Hypotension: Overload causes hypertension, not hypotension.

(D) Dry Mucous Membranes: Seen in dehydration

Cushing’s Syndrome → Dexamethasone Suppression Test

• Cushing’s Syndrome results from excess cortisol. The dexamethasone suppression test evaluates whether cortisol production is appropriately suppressed by exogenous steroids.

Addison’s Disease → ACTH Stimulation Test

• Addison’s Disease involves adrenal insufficiency. The ACTH stimulation test checks if the adrenal glands can produce cortisol when stimulated.

Graves’ Disease → TSH Receptor Antibody Test

• Graves’ Disease is an autoimmune hyperthyroid condition where autoantibodies stimulate the thyroid. The TSH receptor antibody test detects these autoantibodies.

Diabetes Insipidus → Water Deprivation Test

• Diabetes Insipidus causes excessive urination due to ADH deficiency or resistance. The water deprivation test assesses the kidneys' ability to concentrate urine in response to dehydration.

Hashimoto’s Thyroiditis → Antithyroid Antibody Test

• Hashimoto’s Thyroiditis is an autoimmune hypothyroid disorder characterized by elevated antithyroid antibodies.