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[The echocardiography in thalassemia major (author's transl)]
Insights
Echocardiography can detect early cardiac changes in beta-thalassemia major due to iron overload. However, this study couldn't confirm if desferrioxamine prevents these heart lesions in young patients.
Area of Science:
- Cardiology
- Hematology
- Medical Imaging
Context:
- Beta-thalassemia major is a genetic blood disorder requiring lifelong transfusions.
- Iron overload is a common complication of transfusions, leading to organ damage.
- Cardiac complications significantly impact morbidity and mortality in beta-thalassemia major patients.
Purpose:
- To investigate the relationship between cardiac lesions caused by iron overload and patient age/chelation therapy in beta-thalassemia major.
- To assess the utility of echocardiography in early detection of cardiac involvement.
- To evaluate the potential protective effect of desferrioxamine treatment.
Summary:
- Echocardiography revealed cardiac alterations in beta-thalassemia major patients, including posterior wall thickening and altered left ventricular diastolic diameter, correlating with iron overload.
- These echocardiographic findings were detectable even in the absence of clinical cardiac dysfunction or significant ECG changes.
- The study included 17 patients; however, due to a small number of patients on regular desferrioxamine therapy and their younger age, the efficacy of desferrioxamine in preventing cardiac lesions could not be definitively established.
Impact:
- Echocardiography serves as a valuable tool for early, non-invasive detection of cardiac iron overload in beta-thalassemia major.
- Findings highlight the need for ongoing monitoring of cardiac health in these patients.
- Further research with larger cohorts is warranted to confirm the long-term benefits of chelation therapy in preventing cardiac complications.
Abstract:
Echocardiographic findings were studied in seventeen subjects with beta-Thalassemia major in order to see whether cardiac lesions caused by iron were related to the age and chelating therapy. The results demonstrate that the alterations of the heart can be early detected by echocardiography. In fact no patient with echocardiographic alterations showed clinical signs of cardiac dysfunction and only four patients showed E.C.G. alterations. Moreover the thickening of posterior wall and left ventricular diastolic diameter were related to iron overload, as demonstrated by urinary excretion after desferrioxamine. Since the patients regularly treated with desferrioxamine were few and younger aged it is not possible in this study to show the positive effect of desferrioxamine treatment in preventing cardiac lesions due to iron overload.