
Post-Treatment “Cardiac Function Changes and Fatigue” in Cancer Patients
After completing chemotherapy, radiotherapy, or targeted therapy, many cancer patients notice heart-related discomfort.
They often experience sudden rapid heartbeat, chest tightness, shortness of breath when climbing stairs or walking, noticeable palpitations when lying down, or overall fatigue that feels heavier than before treatment.
These issues are not simply due to poor stamina or stress.
They result from the long-term effects of treatment on the heart and circulatory system.
Medically, this is known as “Treatment-Related Cardiotoxicity and Fatigue.”
This change is especially common in breast cancer patients (using anthracyclines or trastuzumab), lung cancer, lymphoma, or multiple myeloma patients.
Cardiac function changes not only affect physical stamina but also bring anxiety, poor sleep, and reduced quality of life. It is one of the most overlooked yet most impactful long-term side effects after treatment.








