Pharmacology Quiz: Diabetes and GERD Treatments

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Questions and Answers

What effect do Thiazolidinediones have on insulin sensitivity?

  • They increase insulin production in pancreas only.
  • They have no effect on insulin sensitivity.
  • They increase insulin sensitivity in fat, muscle, and liver. (correct)
  • They decrease insulin sensitivity in fat, muscle, and liver.

What is a serious adverse drug event associated with Sulfonylureas?

  • Weight gain.
  • Fatigue.
  • Hypoglycemia. (correct)
  • Nausea and vomiting.

Which agent works the fastest for treating GERD?

  • Sucralfate.
  • Proton Pump Inhibitors (PPIs).
  • H2 Antagonists.
  • Antacids. (correct)

What is a potential adverse effect associated with long-term PPI use in the elderly?

<p>Osteoporosis. (A)</p> Signup and view all the answers

When should antacids ideally be administered to enhance their effectiveness?

<p>1 hour after meals and at bedtime. (A)</p> Signup and view all the answers

What side effect is commonly associated with aluminum-based antacids?

<p>Constipation. (D)</p> Signup and view all the answers

What mechanism does sucralfate utilize in treating ulcers?

<p>Forms a protective paste over the ulcer. (D)</p> Signup and view all the answers

In what situation are topical corticosteroids contraindicated?

<p>For skin infections. (D)</p> Signup and view all the answers

Which laboratory values would indicate hypothyroidism?

<p>High TSH, low T4 (B)</p> Signup and view all the answers

What are common symptoms associated with hyperthyroidism?

<p>Weight loss and increased appetite (C)</p> Signup and view all the answers

What is the primary function of Levothyroxine?

<p>To restore thyroid hormone levels (A)</p> Signup and view all the answers

What is the mechanism of action (MOA) of metformin?

<p>It decreases hepatic glucose production, decreases intestinal absorption of glucose, and improves insulin sensitivity. (A)</p> Signup and view all the answers

Which medication should be monitored for renal and liver enzyme levels?

<p>Systemic antifungal medication (C)</p> Signup and view all the answers

Which of the following is a severe adverse effect (ADE) associated with metformin?

<p>Lactic acidosis (D)</p> Signup and view all the answers

Which lifestyle factor is NOT associated with Type II diabetes?

<p>High daily sugar consumption (C)</p> Signup and view all the answers

What is the main characteristic of subclinical hypothyroidism?

<p>Elevated TSH with normal T4 (B)</p> Signup and view all the answers

Which of the following is a potential adverse effect of oral antibiotics like tetracycline?

<p>GI upset (D)</p> Signup and view all the answers

What effect does decreased glucagon production have on glucose production in the liver?

<p>Decreases hepatic glucose production. (D)</p> Signup and view all the answers

Which medications are classified as GLP-1 receptor agonists?

<p>Exenatide and semaglutide (B)</p> Signup and view all the answers

What is the primary consequence of elevated TSH levels?

<p>Decreased thyroid function (C)</p> Signup and view all the answers

What is a contraindication for the use of metformin?

<p>Severe renal impairment (C)</p> Signup and view all the answers

Which statement accurately describes the action of IV antivirals in immunosuppressed patients?

<p>They are administered with inpatient observation. (C)</p> Signup and view all the answers

What is one of the benefits of rotating insulin injection sites?

<p>Decreases the risk of insulin resistance and absorption issues. (C)</p> Signup and view all the answers

Which cancer has been associated with GLP-1 receptor agonists?

<p>Medullary thyroid cancer (B)</p> Signup and view all the answers

What is the active form of thyroid hormone found in Liothyronine?

<p>Triiodothyronine (C)</p> Signup and view all the answers

What is the normal range for TSH levels in mU/L?

<p>0.4 - 4.5 (C)</p> Signup and view all the answers

Which medication is often used to manage the symptoms of hyperthyroidism?

<p>Methimazole (B)</p> Signup and view all the answers

Which symptom is typically associated with hypothyroidism?

<p>Fatigue (B)</p> Signup and view all the answers

What is the potential consequence of abrupt discontinuation of anti-thyroid medications?

<p>Thyroid storm (A)</p> Signup and view all the answers

Which of the following is NOT a symptom of hyperthyroidism?

<p>Cold intolerance (D)</p> Signup and view all the answers

What is the clinical presentation of a thyroid storm characterized by?

<p>Intensified symptoms of hyperthyroidism (D)</p> Signup and view all the answers

What is the primary purpose of beta-blockers in the treatment of hyperthyroidism?

<p>To alleviate cardiac symptoms (A)</p> Signup and view all the answers

What condition is typically associated with myxedema?

<p>Hypothyroidism (C)</p> Signup and view all the answers

What characterizes euthyroidism?

<p>Normal TSH and thyroid hormone levels (B)</p> Signup and view all the answers

Which statement about subclinical hypothyroidism is true?

<p>TSH levels are elevated while thyroid hormone levels are normal. (D)</p> Signup and view all the answers

What is the recommended monitoring frequency for hypothyroidism treatment?

<p>Every 6-8 weeks (C)</p> Signup and view all the answers

What management approach should be taken for treating hypothyroidism in pregnant women?

<p>Increase the dose by 20-50%. (A)</p> Signup and view all the answers

What is the most commonly prescribed medication for hypothyroidism?

<p>Levothyroxine (Synthetic T4) (B)</p> Signup and view all the answers

Which of the following is a potential risk of untreated hypothyroidism during pregnancy?

<p>Preeclampsia (A)</p> Signup and view all the answers

What autoimmune condition is commonly associated with hypothyroidism?

<p>Hashimoto's disease (C)</p> Signup and view all the answers

What medications are used for long-term hyperthyroidism treatment?

<p>Antithyroid drugs and RAI therapy (B)</p> Signup and view all the answers

What is a common adverse effect associated with long-term use of topical corticosteroids?

<p>Rosacea (C)</p> Signup and view all the answers

Which topical steroid class is considered safe for use on the face?

<p>Low potency (C)</p> Signup and view all the answers

What is the mechanism of action of topical corticosteroids?

<p>Suppress cytokines and immune cells (C)</p> Signup and view all the answers

What lab tests should be monitored when using systemic antifungals for onychomycosis?

<p>Liver function and CBC (D)</p> Signup and view all the answers

Which medication is indicated for treating severe, treatment-resistant acne?

<p>Isotretinoin (A)</p> Signup and view all the answers

What lab results typically indicate hypothyroidism?

<p>High TSH and low T4 (A)</p> Signup and view all the answers

What is the primary purpose of monitoring patients prescribed isotretinoin?

<p>To check liver function and pregnancy status (C)</p> Signup and view all the answers

Flashcards

Insulin injection sites

Insulin injection sites should be rotated to prevent lipohypertrophy (fat buildup) and skin problems. Injecting into muscle can lead to faster absorption, potentially causing hypoglycemia.

Metformin MOA

Metformin, a common medication for Type 2 Diabetes, primarily works by reducing glucose production in the liver, decreasing glucose absorption in the gut, and improving insulin sensitivity, leading to better glucose uptake by cells.

Metformin ADE

Metformin can cause gastrointestinal side effects like nausea, vomiting, diarrhea, and abdominal pain. It can also increase the risk of lactic acidosis, particularly with kidney or liver problems, or in elderly patients.

GLP-1 MOA

GLP-1 receptor agonists are a class of drugs that mimic the action of GLP-1, a hormone promoting insulin secretion and reducing glucagon release.

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GLP-1 cancer risk

GLP-1 receptor agonists are associated with an increased risk of medullary thyroid cancer and thyroid C-cell tumors.

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Glucagon and glucose production

Decreased glucagon production in the liver leads to a decrease in hepatic glucose production. This means the liver produces less glucose when glucagon is low.

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Type 2 diabetes causes

Type 2 diabetes can be caused by various factors, including genetic predisposition, obesity, physical inactivity, family history, and ethnicity.

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Type 2 diabetes lifestyle factors

Lifestyle factors strongly contribute to Type 2 diabetes. These include lack of physical activity, unhealthy diet, excess weight, and insufficient sleep.

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Skin disorders in immunosuppressed patients

IV antivirals and inpatient observation are the primary treatments for skin disorders in immunosuppressed patients.

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Systemic antifungal monitoring

Systemic antifungal medications are monitored by checking renal and liver enzyme levels to assess for potential side effects.

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Steroid potency classes

Steroids are categorized by their potency, with Class 1 being the strongest and Class 7 being the weakest.

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Oral acne treatment

Oral antibiotics like tetracycline are often prescribed for severe acne, but they can cause gastrointestinal upset as a potential side effect.

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Hypothyroidism lab values

Hypothyroidism is a condition where the thyroid gland is underactive, resulting in low levels of thyroid hormones. This leads to elevated TSH, low T4, low FT4, and low T3.

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Hyperthyroidism lab values

Hyperthyroidism is a condition where the thyroid gland is overactive, resulting in high levels of thyroid hormones. This leads to low TSH, high T4, high FT4, and high T3.

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Levothyroxine MOA

Levothyroxine is a synthetic form of T4, the main hormone produced by the thyroid gland. It is used to replace missing thyroid hormone in patients with hypothyroidism.

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Differentiating thyroid conditions

Euthyroidism is a normal thyroid function with normal hormone levels. Subclinical hypothyroidism has elevated TSH but normal T4, suggesting a mild thyroid dysfunction.

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Thiazolidinediones - Insulin Action

Thiazolidinediones increase insulin sensitivity in fat, liver, and skeletal muscle, making cells more responsive to insulin.

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Sulfonylureas - Major Side Effect

Hypoglycemia (low blood sugar) is a serious potential adverse effect of sulfonylureas. This is because these drugs stimulate insulin release, which can lead to dangerously low blood sugar levels.

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Initial Type 2 Diabetes Treatment

Metformin is preferred as initial therapy for type 2 diabetes due to its effectiveness in improving insulin sensitivity and reducing glucose production by the liver, while generally having a lower risk of hypoglycemia compared to other oral medications.

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GERD Treatment - Speed vs. Duration

Antacids work quickly to neutralize stomach acid, providing immediate relief, while PPIs (proton pump inhibitors) have a slower onset but suppress acid production for a longer duration.

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IV H2 Antagonists - Elderly Concerns

In older adults, IV H2 antagonists can cause central nervous system effects like delirium (confusion) and worsen existing renal impairment (kidney problems).

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PPI Mechanism of Action

PPIs (proton pump inhibitors) bind to the proton pump (H/K-ATPase) and block the release of hydrogen ions into the stomach, effectively inhibiting gastric acid secretion by parietal cells. This results in significantly reduced stomach acid.

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PPIs - Osteoporosis Risk

Long-term use of PPIs (more than a year) in older adults is associated with an increased risk of osteoporosis (weakening of bones).

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Optimizing Antiacid Effectiveness

Antiacids are most effective when taken 1 hour after meals and at bedtime, as they directly neutralize stomach acid during peak periods of acid production

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What is Euthyroidism?

A state where thyroid function is normal, with the thyroid gland producing adequate amounts of hormones.

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What is Subclinical Hypothyroidism?

A mild form of hypothyroidism where TSH levels are elevated, but thyroid hormone levels remain within the normal range.

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What are the biochemical markers of Hyperthyroidism?

A condition characterized by elevated levels of thyroid hormones (T3 and T4) and suppressed TSH levels.

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What is Myxedema?

A condition typically associated with hypothyroidism, characterized by swelling of the skin and subcutaneous tissues.

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How often should TSH levels be monitored during hypothyroidism treatment?

Monitoring TSH levels every 6-8 weeks is crucial to ensure proper management and adjustment of thyroid hormone replacement therapy.

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How should hypothyroidism medication dosages be adjusted for different populations?

Hypothyroidism medication dosage should be adjusted for specific groups like pregnant women and older adults to optimize treatment and minimize risks.

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What is Autoimmune Hypothyroidism?

Autoimmune hypothyroidism, also known as Hashimoto's disease, is caused by the immune system attacking the thyroid gland.

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What is the most common medication for hypothyroidism?

Levothyroxine (synthetic T4) is the most common medication for hypothyroidism. It is a synthetic version of the naturally produced thyroxine hormone.

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What is Liothyronine (T3)?

Liothyronine is a synthetic form of T3, which is the active form of thyroid hormone. It is sometimes used with levothyroxine or alone for patients who can't convert T4 to T3 efficiently.

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What is Desiccated Thyroid?

Desiccated thyroid is a natural thyroid hormone derived from pig thyroid glands, containing both T3 and T4. While less common now, it is still prescribed in some cases.

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What's the normal TSH range?

The normal range for TSH is 0.4 to 4.5 mU/L. This hormone helps regulate thyroid hormone production.

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What's the normal Free T4 range?

The normal range for Free T4 is 0.9 to 2.3 ng/dL. It measures the active form of thyroid hormone circulating in the blood.

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What are the symptoms of Hypothyroidism?

Hypothyroidism is an underactive thyroid, causing fatigue, weight gain, cold intolerance, dry skin, constipation, and more.

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What are the symptoms of Hyperthyroidism?

Hyperthyroidism is an overactive thyroid, causing weight loss, heat intolerance, nervousness, rapid heartbeat, tremors, and more.

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What drugs are used to manage Hyperthyroidism?

Antithyroid drugs like methimazole and propylthiouracil are used to manage Hyperthyroidism.

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What is Thyroid Storm?

Thyroid storm is a life-threatening condition caused by extreme Hyperthyroidism. It requires immediate care to prevent harm.

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Hyperthyroidism treatment

Methimazole and propylthiouracil are common medications used to manage long-term hyperthyroidism, while radioactive iodine therapy (RAI) is another option for treating the condition.

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High-potency topical steroids

High-potency topical steroids are used during acute flare-ups of lesions and for prevention of exacerbations in skin conditions.

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Topical steroid ADEs

Long-term use of topical corticosteroids can lead to various adverse effects like thinning of the skin (atrophy), stretch marks (striae), acne-like breakouts (rosacea), and delayed wound healing.

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Face steroid use

Low-potency topical corticosteroids are generally safe for use on the face, while higher potency steroids might cause adverse effects like rosacea or skin atrophy.

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Topical steroid contraindications

Topical corticosteroids are contraindicated in open wounds or infections. These medications can worsen existing infections or delay healing.

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Topical steroid MOA

Topical corticosteroids work by suppressing inflammation. They reduce the release of inflammatory chemicals and dampen the activity of immune cells in the skin.

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Ocular and immunocompromised steroid alternative

Tacrolimus ointment and pimecrolimus cream are topical calcineurin inhibitors that can be used safely in the ocular region and in immunosuppressed patients.

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Study Notes

Insulin Regimens for Lowering HgA1c

  • Basal bolus and intensive insulin regimens can improve long-term outcomes by reducing A1C
  • Basal bolus involves multiple daily insulin injections or continuous subcutaneous administration via an insulin pump
  • Intensive insulin replacement therapy can lower A1C and improve long-term outcomes.

Adverse Effects of Lack of Insulin

  • Lack of insulin can result in hyperglycemia
  • Ketoacidosis: Acidic buildup, fruity breath, high blood sugar, weight loss, and elevated lipids and triglycerides. Nausea, vomiting, and abdominal pain are also symptoms
  • Tissue catabolism: Breakdown of body tissues
  • Hypertriglyceridemia: Elevated triglycerides in the blood

Basal Insulin Function

  • Basal insulin suppresses hepatic glucose production, maintaining near-normal blood sugar levels in the fasting state.

Bolus Insulin Purpose

  • Bolus insulin (prandial/premeal) controls postprandial glucose excursions, compensating for the increased glucose requirements after food absorption.

Basal Insulin Types

  • NPH: One type of basal, long-acting insulin with longer duration of action, and flatter, more constant plasma levels
  • Long-acting insulin analogs (e.g., glargine, detemir, degludec): Flatter, more predictable glucose control.
  • Continuous delivery of rapid-acting insulin pumps another option.

Bolus Insulin Types

  • Regular insulin: One type of short-acting insulin.
  • Rapid-acting insulin analogs (e.g., lispro, aspart, glulisine): Quick onset, short duration of action, less weight gain, and fewer episodes of low blood sugar.

Lispro Insulin Onset

  • Lispro insulin onset = 15-30 minutes

Insulin Glargine Duration of Action

  • Insulin glargine duration of action = 20 hours or more.

General Insulin Needed for Type 1 Diabetes

  • Newly diagnosed type 1 diabetics may initially need a 50/50 balance between basal and bolus insulin.

Factors to Consider with Insulin Dosing

  • Carbohydrate intake
  • Pregnancy, puberty, and medical illness may require adjustments to insulin doses
  • Illness usually requires increasing insulin

Bolus Insulin Factors

  • Regular, rapid-acting, inhaled insulin
  • Pre-meal glucose levels
  • Carbohydrate consumption (consider fat and protein levels)
  • Anticipated activity levels: Muscle activity uses glucose and can affect insulin needs

Insulin Injection Sites

  • Subcutaneous injection sites like abdomen, thigh, buttock, and upper arms are recommended
  • Rotate injection sites to prevent lipohypertrophy, an abnormal fat accumulation.

Five Factors Associated with Type II Diabetes

  • Insulin resistance
  • Impaired insulin secretion
  • Elevated glucose production by the liver
  • Decreased liver's ability to reduce glucose productions
  • Lean patients with type II

Self-Management for Type II Diabetic

  • Lifestyle factors like diabetes self-management, education, support, and avoidance of clinical inertia
  • Social determinants of health
  • Established/high-risk atherosclerotic cardiovascular disease (CVD), heart failure (HF), and chronic kidney disease (CKD).
  • Use agents that reduce cardiovascular and kidney risk factors
  • Weight management
  • Appropriate medication use

Metformin MOA

  • Metformin's MOA is to decrease hepatic glucose production, decrease intestinal glucose absorption, and improve insulin sensitivity

SGLT2 Inhibitors & Adverse Effects

  • SGLT2 inhibitors work to inhibit sodium-glucose co-transporter 2, increasing urine glucose excretion.
  • Potential adverse effects include hypotension, urogenital infections, and acute kidney injury, especially in certain patient populations with chronic kidney disease.

GLP-1 Receptor Agonists MOA

  • GLP-1 receptor agonists enhance glucose-dependent insulin secretion, slow gastric emptying, and reduce postprandial glucagon secretion.

Medications/Cancer associated with GLP-1

  • Liraglutide, Lixisenatide, Semaglutide, Dulaglutide, and Exenatide are some GLP-1 medications
  • Medulary thyroid cancer, thyroid C-cell tumors

Thiazolidinediones (TZDs) Impact on Insulin

  • Improve insulin sensitivity in fat, liver, and muscle tissue
  • Don't directly increase insulin production

Sulfonylureas and Adverse Effects

  • Serious adverse effect is hypoglycemia
  • Other possible side effects associated with use.

GERD Treatment

  • Antacids work more quickly
  • PPIs work longer
  • H2 antagonists are an alternative option but slower than PPIs

PPI Use in Elderly

  • Possible adverse effect of osteoporosis when taken for more than a year

Magnesium-based Antacids Side Effects

  • Diarrhea is a potential side effect

Aluminum-based Antacids Side Effects

  • Constipation

Sucralfate Mechanism of Action

  • Forms a complex with exudate or injured tissue in the stomach, helping prevent further damage by peptic acid, pepsin, and bile salts.

Topical Corticosteroids Usage

  • Topical corticosteroids with high potency may be used for significant skin issues such as severe dermatitis, psoriasis or eczema.
  • It is important to avoid using them on infected or damaged skin.

Potency of Topical Corticosteroids

  • Ranked from weakest to strongest, potency levels are given for each medication listed

Isotretinoin Monitoring Parameters

  • Two negative pregnancy tests before treatment. Monthly pregnancy tests throughout the treatment period.
  • Monitoring Cholesterol, triglycerides, CBC, and Liver Function tests at treatment initiation and 4 weeks into the treatment. Regular monitoring as needed.

Hypothyroidism Lab Tests

  • High TSH and low T4 levels are indicative

Levothyroxine Mechanism of Action

  • Replaces missing thyroid hormone, to normalize the thyroid levels in the body.

Monitoring Hypothyroidism Treatment

  • Monitor TSH every 6-8 weeks. T4 levels may not be necessary.

Hashimoto's Disease

  • Enlarged thyroid, fatigue, weight gain, cold intolerance, dry skin, hair loss, constipation, depression, and muscle aches.

Desiccated Thyroid Origin

  • Derived from dried animal thyroid glands (cow/pig)

Hypothyroidism Target TSH Level

  • 0.4 to 4.0 mU/L

Hyperthyroidism Signs & Symptoms

  • Heat intolerance, increased sweating, nervous and anxiety related symptoms. Elevated T4, Low TSH levels.

Hyperthyroidism Complication

  • untreated hyperthyroidism can cause potential complications such as atrial fibrillation, congestive heart failure, thrombotic events, and/or osteoporosis (bone damage).

Hyperthyroidism Treatment

  • Antithyroid drugs - Methimazole (MMI) and propylthiouracil (PTU)
  • Radioactive iodine (RAI) therapy

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