Effect of Scalp Blocks with Levobupivacaine on Recovery Profiles After Craniotomy for Aneurysm Clipping: A Randomized, Double-Blind, and Controlled Study

Objective This study was conducted to evaluate the effect of scalp blocks using levobupivacaine on recovery profiles including postoperative pain, patient-controlled analgesia (PCA) consumption, postoperative nausea and vomiting (PONV), and other adverse events in patients undergoing frontoparietal craniotomy for aneurysm clipping. Methods Fifty-two patients scheduled for elective frontoparietal craniotomy for unruptured aneurysm clipping were enrolled. After surgery, scalp blocks were performed using normal saline (group C, n = 26) or 0.75% levobupivacaine (group L, n = 26). Postoperative pain scores and PCA consumption were recorded for 72 hours after recovery of consciousness. The time from patient recovery to the first use of PCA drug and rescue analgesics, the requirement for vasoactive agents, and adverse effects related to PCA and local anesthetics also were recorded. Results Postoperative pain scores and PCA consumption in group L were lower than in group C ( P < .05). The time intervals from patient recovery to the first use of PCA drug ( P < .001) and rescue analgesics ( P = .038) was longer in group L than in group C. Additionally, less antihypertensive agent was required ( P = .017), and PONV occurred less frequently ( P = .039) in group L than in group C. Conclusions Scalp blocks with 0.75% levobupivacaine improved recovery profiles in that it effectively lowered postoperative pain and PCA consumption without severe adverse events and also reduced the requirement for a postoperative antihypertensive agent and the incidence of PONV in patients who underwent frontoparietal craniotomy for aneurysm clipping.