Heart failure from thyrotoxicosis due to Graves' disease

Area of Science:

• Internal Medicine
• Cardiology
• Endocrinology

Background:

• Pernicious anemia can present with non-specific symptoms.
• Thyroid dysfunction, particularly Graves' disease, can lead to significant cardiovascular complications.
• Pneumonia is a common and serious respiratory illness.

Observation:

• A 30-year-old female with pernicious anemia presented with pleuritic chest pain, palpitations, fatigue, coryzal symptoms, and fever.
• The patient was hypoxic and tachycardic, requiring extensive investigation and treatment.
• A clinical "gut feeling" prompted thyroid function testing.

Findings:

• Thyroid function tests revealed deranged results, indicating Graves' disease.
• The Graves' disease was causing heart failure, complicated by pneumonia.
• The patient developed thrombocytopenia while on carbimazole.

Implications:

• This case highlights the importance of considering thyroid dysfunction in patients presenting with cardiopulmonary symptoms.
• Prompt diagnosis and management of Graves' disease are essential to prevent severe complications like heart failure.
• Alternative antithyroid medications may be necessary in cases of adverse drug reactions, such as thrombocytopenia.