methimazole and Hypertension--Pulmonary

Topics: Adult; Antithyroid Agents; Computed Tomography Angiography; Conservative Treatment; Echocardiography, Transesophageal; Electrocardiography; Female; Graves Disease; Heart Failure; Humans; Hypertension, Pulmonary; Image Processing, Computer-Assisted; Methimazole; Propylthiouracil; Scimitar Syndrome; Thyroid Function Tests; Treatment Outcome; Tricuspid Valve Insufficiency; Vena Cava, Inferior

Right-sided heart failure with clinical manifestation is only occasionally seen in patients with Graves' disease (GD). Recent studies revealed that pulmonary hypertension (PHT) detected by echocardiography was not rare in patients with GD. We performed this study to investigate the prevalence of PHT in patients with GD before and after antithyroid treatment, and to assess potential mechanisms from the relationship with clinical and echocardiographic features.. Serial echocardiographic examinations were performed in 64 patients with newly diagnosed GD before and after antithyroid treatment to measure cardiac factors, such as pulmonary artery systolic pressure (PAPs), cardiac output, total vascular resistance, left ventricular filling pressure and right ventricular (RV) function. PHT was defined as PAPs of at least 35 mmHg.. The prevalence of PHT in untreated GD patients was 44% (28 out of 64 patients). The presence of systemic hypertension was associated with PHT, especially with pulmonary venous hypertension. GD patients with PHT showed reduced RV function represented by higher RV myocardial performance index without difference of pulmonary vascular resistance, RV wall thickness and peak systolic velocity of free wall side of tricuspid annulus. Follow-up echocardiography was performed in 20 out of 28 GD patients with PHT, and PHT disappeared in all except one patient.. PHT is a frequent and reversible complication in patients with GD. Our study suggests that PHT in GD may not be related to underlying autoimmune process and increased pulmonary blood flow from thyrotoxicosis might contributes to the pathogenesis of PHT related to GD.

Topics: Adolescent; Adult; Aged; Antithyroid Agents; Echocardiography; Female; Graves Disease; Humans; Hypertension, Pulmonary; Male; Methimazole; Middle Aged; Thyroid Hormones; Young Adult

Hyperthyroidism may present with signs and symptoms related to dysfunction of a variety of organs. Cardiovascular pathology in hyperthyroidism is common. A few case reports describe isolated right heart failure, tricuspid regurgitation, and pulmonary hypertension as the prominent cardiovascular manifestations of hyperthyroidism. Although most textbooks do not mention hyperthyroidism as a cause of pulmonary hypertension and isolated right heart failure, the literature suggests that some hyperthyroid patients may develop reversible pulmonary hypertension and isolated right heart failure. We report a case of hyperthyroidism presenting with signs and symptoms of isolated right heart failure, tricuspid regurgitation, and pulmonary hypertension, which resolved with treatment of hyperthyroidism.

Topics: Antithyroid Agents; Female; Graves Disease; Heart Failure; Humans; Hypertension, Pulmonary; Methimazole; Middle Aged; Tricuspid Valve Insufficiency; Ventricular Dysfunction, Right

Topics: Aged; Amlodipine; Atrial Fibrillation; Digoxin; Female; Graves Disease; Humans; Hypertension, Pulmonary; Methimazole; Recurrence; Syncope; Treatment Outcome; Vertigo