Coronary Microvascular function, Peripheral Endothelial Function and Carotid IMT in beta-thalassemia minor

Area of Science:

• Cardiology
• Vascular Biology
• Hematology

Background:

• Cardiovascular disease is more prevalent in thalassemia patients.
• Potential mechanisms include platelet activation, LDL oxidation, and nitric oxide destruction.

Purpose of the Study:

• To investigate coronary flow reserve (CFR), brachial artery flow-mediated dilation (FMD), and carotid intima-media thickness (IMT) in patients with Beta thalassemia minor (BTM).

Main Methods:

• Forty patients with BTM and 35 healthy controls were enrolled.
• Coronary flow reserve, brachial artery FMD, and carotid artery IMT were measured in all participants.

Main Results:

• Beta thalassemia minor patients exhibited significantly lower CFR (2.57 ± 0.46 vs. 3.07 ± 0.48, P < 0.0001).
• Brachial artery FMD was significantly reduced (6.22 ± 4.29% vs. 8.10 ± 4.00%, P = 0.01).
• Carotid IMT was significantly increased (0.57 ± 0.07 vs. 0.54 ± 0.04, P = 0.04).

Conclusions:

• Coronary microvascular function, assessed by CFR, is impaired in BTM patients.
• Brachial artery FMD is decreased, indicating endothelial dysfunction.
• Increased carotid IMT suggests early atherosclerotic changes in BTM.