Variability and Post-op AEs: Does Preoperative CardioPulmonary Variability Assessment Identify Risk of Postoperative Adverse Events Following Thoracic Surgery

The Preoperative CardioPulmonary Variability Assessment (CPVA) will assess baseline HRV \& RRV and the ability to tolerate mild physiologic stress. The assessment will involve a a Philips MP50 monitor that will collect continuous ECG (Lead II) and CO2-based respiratory waveform data with intermittent blood pressure (BP) measurements over a test of less than 60 minutes. We will measure the response to mild physiological stress which reflects adaptability, autonomic function and functional mobility by having the participant perform certain tasks such as sitting, standing, deep breathing, valsalva manoeuvres, and marching.