Anthracyclines are described as having cardiotoxic effects that are dose-dependent and may lead to irreversible cardiomyopathy. Which statement best reflects this?

Anthracyclines are described as having cardiotoxic effects that are dose-dependent and may lead to irreversible cardiomyopathy. Which statement best reflects this?

• A. They cause dose-dependent cardiotoxicity leading to irreversible cardiomyopathy
• B. They cause only liver toxicity
• C. They improve heart function
• D. They have no cardiac effects

Answer: (A)

Anthracyclines cause cardiotoxicity that increases with the total amount given and can lead to lasting heart damage. As the cumulative dose rises, cardiac cells suffer oxidative stress and mitochondrial injury, which can result in dilated cardiomyopathy and heart failure that may be irreversible. That’s why the statement describing dose-dependent cardiotoxicity with the potential for irreversible cardiomyopathy best matches what is known about these drugs. The other options are inaccurate because they imply only liver toxicity, a beneficial effect on heart function, or no cardiac effects at all.

Anthracyclines cause cardiotoxicity that increases with the total amount given and can lead to lasting heart damage. As the cumulative dose rises, cardiac cells suffer oxidative stress and mitochondrial injury, which can result in dilated cardiomyopathy and heart failure that may be irreversible. That’s why the statement describing dose-dependent cardiotoxicity with the potential for irreversible cardiomyopathy best matches what is known about these drugs. The other options are inaccurate because they imply only liver toxicity, a beneficial effect on heart function, or no cardiac effects at all.