The decrease in quadriceps strength after anterior quadratus lumborum block (AQLB) has not been quantified. This prospective cohort study investigated the incidence of quadriceps weakness after AQLB. We enrolled patients undergoing robot-assisted partial nephrectomy, and AQLB was performed at the L2 level with 30 mL of 0.375% ropivacaine. We evaluated each quadriceps’ maximal voluntary isometric contraction using a handheld dynamometer preoperatively and postoperatively at 1 and 4 days. The incidence of muscle weakness was defined as a 25% reduction in muscle strength compared with the preoperative baseline, and “muscle weakness possibly caused by nerve block” was defined as a 25% reduction compared with the non-block side. We also assessed the numerical rating scale and quality of recovery-15 scores. Thirty participants were analyzed. The incidence of muscle weakness compared with preoperative baseline and the non-block side was 13.3% and 30.0%, respectively. Patients with a numerical rating scale ≥ 4 or quality of recovery-15 score < 122, which was classified as moderate or poor, had decreased muscle strength with relative risks of 1.75 and 2.33, respectively. All patients ambulated within 24 h after surgery. The incidence of quadriceps weakness possibly caused by nerve block was 13.3%; however, all patients could ambulate after 1 day.

Modified thoracoabdominal nerves block through a perichondrial approach (M-TAPA) provides a wide analgesic range. Herein, we examined the quality of recovery (QoR) of M-TAPA for total laparoscopic hysterectomy (TLH) compared with oblique subcostal transversus abdominis plane block (OSTAPB) and measured plasma levobupivacaine concentrations (PC_levo). Forty female patients undergoing TLH were randomized to each group. Nerve blocks were performed bilaterally with 25 mL of 0.25% levobupivacaine administered per side. The primary outcome was changes in QoR-15 scores on postoperative days (POD) 1 and 2 from the preoperative baseline. The main secondary outcomes were PC_levo at 15, 30, 45, 60, and 120 min after performing nerve block. Group differences (M-TAPA—OSTAPB) in mean changes from baseline in QoR-15 scores on POD 1 and 2 were −11.3 (95% confidence interval (CI), −24.9 to 2.4, p = 0.104; standard deviation (SD), 22.8) and −7.0 (95% CI, −20.5 to 6.6, p = 0.307; SD, 18.7), respectively. Changes in PC_levo were similar in both groups. The post hoc analysis using Bayesian statistics revealed that posterior probabilities of M-TAPA being clinically more effective than OSTAPB were up to 22.4 and 24.4% for POD 1 and 2, respectively. In conclusion, M-TAPA may not be superior to OSTAPB for TLH.

Background: External oblique intercostal block (EOIB) is effective in relieving pain in the T6 to T10 dermatomes; however, there is limited evidence comparing EOIB with conventional regional anesthesia. In this randomized controlled trial, it was hypothesized that EOIB would provide more effective analgesia than wound infiltration (WI) in laparoscopic gastrectomy. Methods: Thirty-two patients (aged 20–85 years) with American Society of Anesthesiologists Performance Status of 1 to 2, scheduled for laparoscopic gastrectomy, were randomly divided into EOIB and WI groups. Both procedures were performed using 40 mL of 0.25% levobupivacaine. The primary outcome was the numerical rating scale (NRS) score 12 h postoperatively. Secondary outcomes were NRS at 2, 24, and 48 h postoperatively, variation in quality of recovery-15 score on postoperative days 1 and 2 from preoperative baseline, postoperative fentanyl consumption, and variation in World Health Organization Disability Assessment Scale 2.0 scores between baseline and 3 months postoperatively. Plasma concentrations of levobupivacaine and pinprick sensation in the T4–11 dermatomes post-EOIB were evaluated to determine the exploratory endpoints. Results: There were no differences in the NRS scores 12 h postoperatively at rest and during movement between the EOIB and WI groups (mean standard deviation 1.3 [1.1] vs. 1.5 [1.4] and 3.1 [1.6] vs. 3.8 [1.7], respectively). Secondary outcomes did not differ significantly between the groups. The time to peak plasma concentration of levobupivacaine following EOIB was 45 min. Conclusions: No significant differences in NRS scores were observed between the analgesic effects of EOIB and WI at 12 h postoperatively.

Background: There has been increasing attention regarding quadratus lumborum block (QLB) and erector spinae plane block (ESPB) as effective truncal blocks. There have been reports of combined QLB and ESPB usage in hip surgery resulting in a symbiotic increase in effectiveness. However, there have been no reports regarding robot-assisted partial nephrectomy (RAPN), which requires multiple port holes ranging from near the xiphoid process to below the umbilicus. We hypothesized that the combined use of QLB and ESPB was an option for anesthesia and analgesia during RAPN. Case presentation: Anterior QLB and ESPB were applied to two patients undergoing scheduled RAPN. With intravenous patient-controlled analgesia, the post-surgery numerical rating scale scores were < 3/10 at rest and < 5/10 upon movement, throughout the perioperative time. Conclusions: The combination of QLB and ESPB could be an option for the postoperative analgesia in RAPN.

Background: Klippel-Feil syndrome (KFS) occurs in 1/40,000 individuals and is characterized by cervical fusion. Thirty percent of patients with KFS present with Sprengel deformity, leading to orthopedic problems and limited shoulder abduction. No reports exist regarding anesthetic procedures for pediatric scapular osteotomies. Case presentation: We report a case of a 4-year-and-7-month-old boy (95.6 cm, 14.7 kg) who underwent left scapular osteotomy. At the age of 8 months, he also underwent a right lower lobectomy due to a congenital pulmonary airway malformation. We decided to use a combination of suprascapular nerve block (SSNB), erector spinae plane block (ESPB), and general anesthesia. He received regular acetaminophen administration and fentanyl 5–10 μg/hour intravenously until 20 h postoperatively and remained on ≤ 2/10 in the Wong-Baker Face Scale (0: no hurt; 10: hurts worst). Conclusion: The combination of SSNB and ESPB could be an option for perioperative analgesia for scapular osteotomies.