Key result
Thoracic radiotherapy heart doses linked to ~10% greater cardiac death risk per Gy.
Why the study?
Does thoracic radiotherapy dose increase the risk of mortality and adverse cardiac endpoints in patients receiving radiation for cancer?
Does thoracic radiotherapy dose increase the risk of mortality and adverse cardiac endpoints in patients receiving radiation for cancer?
Thoracic radiotherapy exhibits a dose-dependent association with long-term adverse cardiac endpoints, highlighting the necessity for close follow-up and cardiovascular risk factor mitigation in cancer survivors.
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May warrant cardiac surveillance in survivors; extends low-certainty data but leaves mitigation strategies open.
Niska et al. (2018) studied this question. High heart doses (>40 Gy) after radiotherapy are linked to decreased survival and increased absolute risk of cardiac death, with a 10% relative risk increase per Gy mean heart dose.
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