Systolic Pulmonary Artery Pressure and Serum Uric Acid Levels in Patients with Hyperthyroidism

Background m of this study was to investigate systolic pulmonary artery pressure (SPAP) and serum uric acid (SUA) levels in patients with hyperthyroidism and after euthyroid state was reached. s five (10 male, 15 female, mean age 49.8 ± 11.6 years) consecutive patients with hyperthyroidism (18 due to toxic nodular goiter, seven to Gravesʹ disease) and 25 (eight male, 17 female, mean age 48.7 ± 8.7 years) healthy controls were included in the study. Thyroid hormones, SUA, glucose, urea, creatinine, and transthoracic echocardiography were performed in all patients. All tests were repeated after treatment of hyperthyroidism. s PAP and SUA levels in patients with hyperthyroidism were significantly higher than in controls (30.4 ± 8.5 vs. 22 ± 3.7 mmHg, p <0.0001, and 5.1 ± 1.1 vs. 4.3 ± 0.5 mg/dL, p = 0.004, respectively). Elevated SPAP and SUA levels in patients with hyperthyroidism decreased significantly after treatment to levels comparable with controls (24.4 ± 5.4 mmHg, p = 0.001 and 4.6 ± 0.9 mg/dL, p = 0.002, respectively). Correlation between SPAP and SUA levels, however, was not significant in hyperthyroid population and after euthyroid stage was reached (r = 0.34, p = 0.097, and r = 0.256, p = 0.216, respectively), possibly due to relatively low number of patients (overall correlation of SPAPs and SUAs was r = 0.4, p <0.0001). sions hyroidism should be included in differential diagnosis of pulmonary arterial hypertension. However, further investigations are needed to determine the exact mechanism between hyperthyroidism and pulmonary hypertension.