Pulmonary artery involvement in Takayasu's arteritis

Area of Science:

• Cardiovascular Medicine
• Rheumatology
• Pulmonary Medicine

Background:

• Pulmonary artery disease in Takayasu's arteritis (TA) is historically under-recognized.
• Takayasu's arteritis is a large-vessel vasculitis affecting the aorta and its branches.

Purpose of the Study:

• To investigate the clinical, hemodynamic, and angiographic characteristics of pulmonary involvement in patients with Takayasu's arteritis.
• To assess the prevalence and nature of pulmonary artery lesions in TA.

Main Methods:

• Retrospective analysis of 22 patients diagnosed with Takayasu's arteritis.
• Inclusion of clinical, hemodynamic, and angiographic data to evaluate pulmonary circulation.

Main Results:

• Pulmonary involvement was identified in 50% of patients.
• Moderate pulmonary hypertension was present in 73% of cases, with lesions in large and medium pulmonary vessels.
• Subtle clinical, radiologic, and electrocardiographic signs of pulmonary hypertension or right heart strain were observed in 63% of patients, despite the absence of pulmonary symptoms.

Conclusions:

• Pulmonary artery disease is a significant and common complication of Takayasu's arteritis.
• Routine evaluation of the pulmonary circulation is recommended for all patients with Takayasu's arteritis.
• Pulmonary involvement should be considered in the classification and management of Takayasu's arteritis.