Increased arterial stiffness in stable and severe asthma

Area of Science:

• Cardiovascular Health
• Respiratory Medicine
• Vascular Biology

Background:

• Systemic inflammation is a key factor in asthma progression.
• Brachial-ankle pulse wave velocity (baPWV) indicates early atherosclerotic changes.
• Assessing baPWV in asthma patients can reveal subclinical vascular disease.

Purpose of the Study:

• To evaluate brachial-ankle pulse wave velocity (baPWV) levels in patients with stable and severe asthma.
• To investigate the relationship between baPWV, systemic inflammation, and lung function in asthma.
• To determine the utility of baPWV for early atherosclerosis detection in asthma.

Main Methods:

• Examined baPWV, high-sensitivity C-reactive protein (CRP), lung function (FEV1, FVC), and arterial blood gases.
• Recruited 85 stable asthma patients, 85 severe asthmatics, and 85 matched control subjects.
• Performed statistical analyses to correlate baPWV with clinical parameters and disease severity.

Main Results:

• Severe asthma patients exhibited significantly higher baPWV and CRP levels than stable asthma and control groups.
• Stable asthma patients also showed elevated baPWV compared to controls.
• baPWV negatively correlated with FEV1 and FEV1/FVC, indicating impaired lung function. CRP positively correlated with baPWV in severe asthma.

Conclusions:

• baPWV levels increase with asthma severity, reflecting disease progression.
• Elevated baPWV is associated with diminished lung function in asthma patients.
• baPWV serves as a valuable marker for the early detection of subclinical atherosclerosis in asthma.