case_images: PMC7148416_01
case_images: The Consolidated Standards of Reporting Trials (CONSORT) flow diagram of the study. ESPB, erector spinae plane block.
case_images: JPR-13-709-g0001.jpg
case_images: PMC7148416_01_JPR-13-709-g0001.jpg
case_images: F0001
case_images: A diagram of the overall study design is shown in Figure 1.
case_images: Longitudinal parasagittal ultrasound view (A) and extent of cutaneous sensory loss over the back at 40 minutes after the injection of 25 mL of 0.3% ropivacaine in one patient at the T12 level (B). Arrows represent the spread of local anesthetic. TP, transverse process; ESM, erector spinae muscle; LA, local anesthetic.
case_images: JPR-13-709-g0002.jpg
case_images: PMC7148416_01_JPR-13-709-g0002.jpg
case_images: F0002
case_images: A total of 25 mL ropivacaine 0.3% was then injected into the ESP (Figure 2A). Forty minutes after the ESPB, the cutaneous sensory block was assessed using a pinprick test over the back in every patient (Figure 2B).