Final answer:
The first-line treatment for Grave's Disease is antithyroid drugs. A myasthenic crisis is a life-threatening condition in individuals with myasthenia gravis that requires immediate treatment with medications and mechanical ventilation and administration of medications such as cholinesterase inhibitors or intravenous immunoglobulins.
Step-by-step explanation:
The first-line treatment for Grave's Disease is the use of antithyroid drugs that help control the disease. These drugs work by inhibiting iodine uptake by the gland, such as Thiocyanate, perchlorate, and ouabain, or by inhibiting thyroperoxidase, such as Thiourea and thiouracil.
A myasthenic crisis is a life-threatening condition that occurs in individuals with myasthenia gravis, where the muscles that control breathing become significantly weakened. Treatment for a myasthenic crisis typically involves hospitalization, mechanical ventilation, and administration of medications such as cholinesterase inhibitors or intravenous immunoglobulins.