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Selective right ventricular dysfunction following doxorubicin therapy.

A D Sperber1, A A Cantor, H Biran

  • 1Department of Medicine, Soroka Medical Center, Beer Sheva, Israel.

Israel Journal of Medical Sciences
|August 1, 1987
PubMed
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Doxorubicin chemotherapy can cause heart damage, specifically affecting the right ventricle even at lower doses. Early monitoring of right ventricular function is recommended to prevent severe cardiac complications.

Area of Science:

  • Cardiology
  • Oncology
  • Pharmacology

Background:

  • Doxorubicin is a widely used chemotherapy agent with known cardiotoxicity.
  • Cardiotoxicity typically manifests as reduced left ventricular ejection fraction at high cumulative doses (>450 mg/m2).

Observation:

  • Three patients developed selective right ventricular dysfunction after doxorubicin therapy.
  • This occurred at significantly lower cumulative doses (105-318 mg/m2).
  • Two patients received concurrent mitomycin-C, and one had prior mediastinal irradiation.

Findings:

  • Selective right ventricular dysfunction is a potential cardiotoxic effect of doxorubicin.
  • This complication can occur at lower cumulative doses than previously reported.
  • Radionuclide angiography revealed reduced right ventricular ejection fraction.

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Implications:

  • Routine monitoring of right ventricular function using radionuclide angiography during doxorubicin treatment is advised.
  • Early detection of right ventricular dysfunction may allow for treatment modification to prevent further cardiac damage.
  • Understanding selective cardiotoxicity mechanisms is crucial for optimizing cancer therapy.