This study will be the first study to report the combined use of three independent closed-loop systems together to assist clinicians in titrating anesthesia, analgesia, fluid and optimize ventilation in frailty old patients undergoing moderate to high risk surgery. The potential benefits of optimizing the control of these variables by advanced closed loop systems are two-fold. Firstly, this will likely decrease the variance of delivered care and reduce deviation from the established standards, resulting in improved post operative cognitive outcomes in elderly patients. Secondly, this would establish a precedent that automated intraoperative systems have strong clinical significance and are more than "complicated toys", which is unfortunately how they are perceived now.