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Evaluation of cardiac functions in patients with thalassemia major

N O Küçük1, G Aras, T Sipahi

  • 1Department of Nuclear Medicine, Ankara University Medical School, Turkey.

Annals of Nuclear Medicine
|August 6, 1999
PubMed

Insights

Blood transfusions for thalassemia can cause heart problems. Radionuclide ventriculography (RNV) is preferred for early detection of subclinical cardiomyopathy, showing diastolic dysfunction before systolic issues appear.

Area of Science:

  • Cardiology
  • Hematology
  • Nuclear Medicine

Background:

  • Blood transfusions are vital for thalassemia patients but can lead to myocardial siderosis and dysfunction.
  • Cardiac complications, including myocardial dysfunction, are a significant concern in patients with thalassemia.

Purpose of the Study:

  • To evaluate myocardial perfusion using stress thallium scanning (MPS).
  • To assess left ventricular functions with rest radionuclide ventriculography (RNV).
  • To investigate early cardiac changes in thalassemia patients receiving regular blood transfusions.

Main Methods:

  • Included 21 pediatric patients (ages 9-16) with thalassemia diagnosed 4-15 years prior.
  • Patients underwent MPS and RNV within two days post-transfusion.
  • Analyzed systolic and diastolic parameters of left ventricular function.

Main Results:

  • MPS indicated normal perfusion in 18 patients and ischemia in 3.
  • RNV showed normal systolic parameters (wall motion, ejection fraction, peak ejection rate, time to peak ejection).
  • RNV revealed significantly diminished diastolic parameters (time to peak filling, peak filling rate) compared to normal values (p < 0.05).

Conclusions:

  • Stress MPS may reveal ischemia or fixed defects due to cardiac involvement in thalassemia.
  • RNV is a valuable tool for early detection of subclinical cardiomyopathy in these patients.
  • RNV can identify diastolic abnormalities preceding systolic dysfunction in thalassemia patients.

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