Clinical Assessment of a New Neuromuscular Monitoring System: TOF Guard® — A Comparison with the Conventional Method

TOF Guard® is one of the latest developments in the field of neuromuscular monitoring equipment. This system uses a miniature acceleration transducer (a piezo-electric ceramic wafer is used), simply fastened to the thumb with tape. The rational behind the method is Newton’s second law, stating that the acceleration is directly proportional to the force. This study was designed to the accuracy of this system in clinical use, comparing with the force transducer method (mechanomyograph).