Brief Review: Atrial Fibrillation in Hyperthyroidism Increases Propensity to Stroke

Context: Deregulations of the bodily systems increase the predisposition to cerebrovascular diseases (CVDs). Thyroid hormone deregulations lead to an observed increase in predisposing such patients to stroke. Evidence Acquisition: Online literature search was conducted using PubMed, Google Scholar, and Cochrane as databases. Results: Increase in thyroid hormone level a ects the cardiovascular system by increasing the density of beta-adrenergic receptors on cardiomyocytes. The highest post diagnosis risk in hyperthyroidism has been reported for atrial fibrillation and arterial em-bolism, which increases the risk of ischemic and nonischemic stroke. Atrial fibrillation has thromboembolic stroke as one of the feared outcomes. Conclusions: Preexisting literature has considerable evidence of increased risk of CVDs in patients with hyperthyroidism and atrial fibrillation together, compared with patients who have either of these diseases.