Analysis of relationship between pre-surgical risk established by ergometry and walking test in lung cancer patients.

Introduction Lung resection is the standard curative approach in early stage non-small cell lung cancer. In patients at moderate-severe risk, exercise testing, such as cardiopulmonary exercise testing, has been used to determine preoperative risk and hence immediate postoperative mortality. In recent years, simpler and more affordable tests to assess exercise capacity have been sought, such as the 6-minute walk test (6MTW).