Evaluation of right ventricular function in patients with thyroid dysfunction.

Area of Science:

• Cardiology
• Endocrinology
• Diagnostic Imaging

Background:

• Thyroid dysfunction adversely affects cardiac structure and function.
• Tissue Doppler echocardiography is an emerging technique for assessing ventricular function.
• Right ventricular function evaluation is crucial in managing thyroid disease.

Purpose of the Study:

• To assess right ventricular function in patients with hypothyroidism and hyperthyroidism using tissue Doppler echocardiography.
• To compare right ventricular function between patients with thyroid disease and healthy controls.
• To investigate the correlation between thyroid hormone levels and right ventricular parameters.

Main Methods:

• Tissue Doppler echocardiography was performed on 63 patients with overt/subclinical hypothyroidism or hyperthyroidism and 20 healthy controls.
• Measurements included annular and myocardial systolic and diastolic velocities, and contraction/relaxation times of the right ventricle.
• Data from patients were compared against those of the control group.

Main Results:

• Hyperthyroidism was associated with significantly higher myocardial systolic velocity.
• Overt hypothyroidism showed significantly lower annular and myocardial late diastolic velocities.
• Hypothyroidism increased annular precontraction time, while hyperthyroidism decreased myocardial precontraction time.

Conclusions:

• Right ventricular function is demonstrably altered in individuals with thyroid diseases.
• Tissue Doppler echocardiography is effective in identifying right ventricular functional impairments.
• A significant correlation exists between serum thyroid hormone levels and measured right ventricular velocities and time intervals.