Effect of Paravertebral Muscle Fat Infiltration on Rocuronium Use in Lumbar Surgery

To investigate the effect of different degrees of fat infiltration on rocuronium use in lumbar surgery was monitored by trapezius muscle relaxation.

Inclusion Criteria:Age: 18-65; ASA grade I-II; no significant cardiopulmonary disease; no history of surgery in the corresponding surgical area; no coagulopathy.Exclusion Criteria:refusal to participate by the present experimenter; those with severe cardio-cerebrovascular disease, severe hepatic and renal dysfunction; taking medications affecting the neuromuscular junction; area of monitoring site for skin breakers; patients with intraoperative bleeding, anaphylactic shock, or other serious complications; patients requiring intraoperative neurophysiological monitoring (including sensory, motor evoked potentials).