Higher cardiovascular magnetic resonance derived pulmonary capillary wedge pressure was closely associated with adverse cardiac features in beta-thalassemia major. The study, published in the International Journal of Cardiology, evaluated how PCWP relates to myocardial tissue characteristics and clinical complications in a cohort of 292 adults enrolled in the Extension Myocardial Iron Overload in Thalassemia project.

PCWP was calculated using formulas that incorporated left ventricular mass with either left atrial volume or left atrial area. Patients with myocardial fibrosis had significantly higher generic and sex-specific left atrial volume PCWP. All PCWP measures increased with advancing age and were higher in individuals who had undergone splenectomy. Values did not differ between those with and without myocardial iron overload.

Patients with cardiac complications, including heart failure, arrhythmias, and pulmonary hypertension, showed higher left atrial volume PCWP, left atrial area PCWP, and sex-specific left atrial volume PCWP compared with those without complications.

These observations suggest that cardiovascular magnetic resonance derived pulmonary capillary wedge pressure may support non-invasive cardiovascular risk assessment in beta-thalassemia major.