Preoperative Walking Evaluation and Postoperative Outcome in Non-cardiac Surgery

Project Description Method This is a non-interventional prospective observational multicenter study of the association between physical activity and peri/postoperative outcomes, planned to be conducted in two stages. First, as a pilot study involving multiple participating anesthesia/surgery clinics. Following this, the plan is to analyze data from the mentioned pilot study and then launch a global multicenter study on a more defined patient group.

Procedures/Data Collection Preoperatively: The investigators will record age, gender, comorbidities, and ongoing medication, as well as ASA classification, frailty score, and mDASI (modified Duke Activity Status Index), which is a measure of functional ability. Routine preoperative laboratory tests will be noted. Furthermore, the investigators intend to record average physical activity, including daily step count on average at one, six, and twelve months before surgery, based on data from the patient's mobile phone*. Type of planned surgery will be recorded.

*The dominant mobile phones on the market (iOS and Android-based) use different types of systems to count steps. Some mobile phones completely lack such systems. The validation of how accurately they count steps per day also varies. We will record the model and operating system, as well as the type of app used. Not all patients carry their phones all the time; we intend to register their own estimate of how often it is carried. A few patients do not have a mobile phone and cannot contribute step per day data.

Intraoperatively: The investigators will record anesthesia method, operation time (incision time and total operation time), fluid balance, bleeding, and transfusion requirements, as well as adverse events such as blood pressure drops, hypoxia, tachycardia.