Evaluation of Seismocardiography(SCG) for Assessing Fitness and Predicting Outcomes in Oesophageal Cancer Surgery

Oesophageal cancer is a common cause of cancer death worldwide. Curative treatment involves chemotherapy and surgery but has significant risks. Therefore, patient selection and improving physical fitness to withstand such major treatment is important to reduce the risk of complications. Physical fitness is traditionally measured by a specialised exercise test called Cardiopulmonary exercise testing (CPET), which can take up to one hour and requires specialised staff and expensive equipment such as a graded exercise bike or treadmill. Seismofit is a small device (smaller than a smartphone) used to estimate fitness in patients in under three minutes while lying down at rest. It measures the vibrations generated by the heart and, together with patient height, weight, age, and gender, accurately estimates fitness using an algorithm developed in healthy patients. The device has never been tes