Abnormal maximal and submaximal cardiopulmonary exercise capacity in pediatric stem cell transplant recipients despite normal standard echocardiographic parameters: a pilot study

•Cardiac dysfunction is a feared complication following stem cell transplantation•Subclinical vascular and cardiac disease have been minimally studied•Patients following stem cell transplantation tend to have abnormal exercise capacity despite having normal vascular, pulmonary, and cardiac function•Exercise parameters tend to be abnormal throughout exercise, meaning submaximal effort exercise testing can provide helpful information in the event the patient is unable to complete a full effort test