Evaluation of the New Acceleromyograph TOF 3D

Evaluation of the New Three-dimensional Acceleromyograph TOF 3D Compared With the Established TOF Watch SX.

The TOF 3D is a new acceleromyograph designed to assess the degree of a neuromuscular block during anesthesia. The study compares the new three-dimensional technique with the established TOF Watch SX.

The TOF 3D is a new acceleromyograph designed to assess the degree of a neuromuscular block during anesthesia. The study compares the new three-dimensional technique with the established TOF Watch SX. The time course of a neuromuscular block (onset, maximal block, time to recovery) is assessed simultaneously with both devices in 50 patients undergoing elective gynecologic surgery requiring neuromuscular block. The validity and reliability of the new technique is evaluated with a Bland-Altman- analysis.

Inclusion Criteria:

• Patients undergoing elective gynecologic surgery requiring general anesthesia and neuromuscular block

Exclusion Criteria:

• anticipated difficult airway
• Risk of pulmonary aspiration
• acute infection
• pregnancy
• renal or hepatic insufficiency
• neuromuscular disease
• chronic intake of drugs influencing neuromuscular block