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Full-Text Articles in Internal Medicine
Influence Of Extracellular Volume Fraction On Peak Exercise Oxygen Pulse Following Thoracic Radiotherapy, Justin M. Canada, Elisabeth Weiss, John D. Grizzard, Cory R. Trankle, Leila Rezai Gharai, Franklin Dana, Leo F. Buckley, Salvatore Carbone, Dinesh Kadariya, Anthony Ricco, Jennifer H. Jordan, Ronald K. Evans, Ryan S. Garten, Benjamin W. Van Tassell, W. Gregory Hundley, Antonio Abbate
Influence Of Extracellular Volume Fraction On Peak Exercise Oxygen Pulse Following Thoracic Radiotherapy, Justin M. Canada, Elisabeth Weiss, John D. Grizzard, Cory R. Trankle, Leila Rezai Gharai, Franklin Dana, Leo F. Buckley, Salvatore Carbone, Dinesh Kadariya, Anthony Ricco, Jennifer H. Jordan, Ronald K. Evans, Ryan S. Garten, Benjamin W. Van Tassell, W. Gregory Hundley, Antonio Abbate
Internal Medicine Publications
Background
Radiation-induced myocardial fibrosis increases heart failure (HF) risk and is associated with a restrictive cardiomyopathy phenotype. The myocardial extracellular volume fraction (ECVF) using contrast-enhanced cardiac magnetic resonance (CMR) quantifies the extent of fibrosis which, in severe cases, results in a noncompliant left ventricle (LV) with an inability to augment exercise stroke volume (SV). The peak exercise oxygen pulse (O2Pulse), a noninvasive surrogate for exercise SV, may provide mechanistic insight into cardiac reserve. The relationship between LV ECVF and O2Pulse following thoracic radiotherapy has not been explored.
Methods
Patients who underwent thoracic radiotherapy for chest malignancies with significant incidental heart …