Exploratory observational study evaluates sensory block characteristics in patients undergoing thoracic procedures, implicating anesthetic techniques.
The exact mechanism of the erector spinae plane block (ESPb) remains unclear.[1 2][1] It is assumed that local anesthetic spreads cranio-caudally within the fascial plane and reaches the paravertebral space, affecting both the dorsal and ventral rami of the spinal nerves, with systemic absorption
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Lupelli et al. (2026) studied this question.
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