NoL Monitor Performances of Nociceptive and Non-nociceptive Stimuli Discrimination During Robotic Surgery

In the researchers' words

Anesthesia quality and safety have improved over the past decades, thanks to improved monitoring devices. No nociception monitoring is currently part of the standard of care. Usually, hemodynamic parameters are used to evaluate nociception (heart rate, HR, and mean arterial pressure, MAP), but none of them are specific. However, nociception evaluation is critical. Indeed, where excess of nociception can lead to arterial hypotension and respiratory depression, insufficient nociception can lead to acute postoperative pain, which is followed by persistent chronic pain in 10-50% of patients. Different monitoring devices have been developed but none of them are still used in current practice. Recently developed, the nociception level (NoL) index (MEDASENSE BIOMETRICS Ltd®, Ramat Gan, Israel) is an index of nociception, based on a nonlinear algorithm combination of heart rate, heart rate variability, photoplethysmograph wave amplitude, skin conductance, skin conductance fluctuations, and their time derivatives. Robotic surgeries have started to spread over the world 20 years ago, claiming to be mini-invasive with less hemorrhage complications, with better success based on the technical advantages of the robot allowing better access during anatomical challenges procedures. Robotic surgery has been suggested to decrease pain during surgery and post-operatively, because of the…