Ultrasound-guided intercostal nerve block [
pleural displacement
DECUBITUS
The patient was in the lateral decubitus position. Unilateral ICNB was performed at the levels of T3-T10. A linear M-Turbo ultrasound probe (FUJIFILM SonoSite, Washington, America) was placed in a longitudinal orientation to identify the rib, internal intercostal muscles, innermost intercostal muscles and pleura. An 18-gauge, 10-cm needle (TUOREN, Henan, China) was inserted to target the inferior margin of the rib at the proximal side of intercostal nerve in an inplane approach. After negative aspiration, the anesthesiologist injected 4 ml of 0.375% ropivacaine into the intercostal spaces where three incisions located and 3 ml ropivacaine for other levels. When pleural displacement was observed in all intercostal spaces, ICNB was considered successful.