Determination of Sensory and Motor Levels After Spinal Anesthesia with Tetracaine

Abstract
Sensory levels are usually determined after spinal anesthesia. There are, however, other anesthetic levels (example, sympathetic and motor). The former was about 1.5 dermatome levels above the sensory level. In this study, motor levels were measured by inserting needles in the intercostal muscles to determine the height of the paralysis. In a series of 33 patients, it was determined that the motor levels will generally be between 1.3 and 2.3 spinal segment below the sensory level.

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