Fig. 5From: Infrared thermography for assessment of thoracic paravertebral block: a prospective observational studyTd increase at T4 in patients with successful and failed TPVB. A cut-off value of 0.63 °C at 15 min after the block is marked. Horizontal lines represent medians, boxes represent quartiles, and whiskers represent ranges. Td: difference of skin temperature between the blocked and the unblocked side at a certain dermatome. TPVB: thoracic paravertebral blockBack to article page