Carpal tunnel release under wide awake local anesthesia with no tourniquet in hemodialysis patients with arteriovenous shunt

A prospective comparison of WALANT technique and general anesthesia in forefoot surgery

INTRODUCTION

Wide Awake Local Anesthesia No Tourniquet (WALANT) technique has been widely used in hand surgery, but there are few prospective data on its use in forefoot surgery.

HYPOTHESIS

The WALANT technique reduces pain compared to general anesthesia for bone surgery on the first ray of forefoot.

METHODS

This was a prospective, longitudinal, comparative, non-randomized cohort study in adult patients undergoing bone surgery on the first ray of forefoot. The primary objective was the level of pain (0-10 visual analogic scale) 4 h after the procedure with WALANT technique versus general anesthesia supplemented by ropivacaine infiltration.

RESULTS

A total 37 patients were analyzed in the WALANT group and 24 in the general anesthesia group (women, 90.2%; mean age, 51.3 years; hallux valgus, 85.2%; first metatarsal osteotomy, 80.3%). After generalized linear regression adjusted on a priori defined factors, there was no statistically difference for pain ≤3 at 4 h in WALANT vs. general anesthesia (odds-ratio 1.66; 95% CI, 0.17-20.49; p = 0.2548). At 24 h, pain level was also comparable in the two groups. Time spent in operating room was significantly shorter with WALANT (40.8 vs. 49.7 min; p = 0.0001). Mean length of stay in the recovery room was also significantly shorter with WALANT (4.4 vs. 75.6 min; p < 0.0001). Anxiety before/after surgery, uptake of analgesic/anti-inflammatory drugs and quality of life were comparable in the two anesthesia groups.

CONCLUSION

Postoperative pain with WALANT technique or general anesthesia was comparable. Time spent in the operating room and in recovery room was significantly shorter with WALANT technique.

LEVEL OF EVIDENCE

III; prospective non-randomized comparative study.

Patient satisfaction using wide-awake local anaesthesia no tourniquet (WALANT) in adults undergoing elective hand surgery: A systematic review and meta-analysis

BACKGROUND

Wide-awake local anaesthesia no tourniquet (WALANT) is increasing in popularity within hand surgery. However, evidence is unclear on patient satisfaction rates when WALANT is compared against more traditional anaesthetic techniques where pneumatic tourniquets are used. The present study aimed to evaluate the satisfaction rates of patient with the WALANT technique.

METHODS

A literature search was performed using the PubMed, Embase and Cochrane databases for observational studies and randomised controlled trials (RCTs) from 2003 up to June 2023. The review was carried out among adults undergoing elective hand surgery. The mean difference in operation time and standardised mean difference (SMD) for patient satisfaction and post-operative pain (<24 h) were computed using the random effects model. The quality of studies was evaluated using RoB-2 for RCTs and risk of bias in non-randomised studies ROBINS-I for observational studies. Data were collated and a meta-analysis was performed.

RESULTS

Five RCTs and 15 observational studies were included in our analysis, comprising a total cohort of 1800 patients. Among them, 899 patients received WALANT (50.0%). Among the RCTs, patient satisfaction was found to be higher in patients receiving WALANT (SMD 1.01, 95% CI 0.11-1.92, p = 0.03, I² = 93%). Post-operative pain was found to be non-significant using WALANT (95% CI -3.72-0.03, p = 0.10, I² = 99%), as was operative time difference (95% CI -0.42-0.40, p = 0.96, I² = 0%).

CONCLUSION

The use of WALANT in elective hand surgery potentially results in higher satisfaction rates compared with anaesthesia with tourniquets. Post-operative pain and operation time were also found to be non-inferior in WALANT, but more robust studies are needed to verify these findings.

Complications and side effects of Wide-Awake Local Anaesthesia No Tourniquet (WALANT) in upper limb surgery: a systematic review and meta-analysis

PURPOSE

Wide-Awake Local Anaesthesia No Tourniquet (WALANT), a groundbreaking anaesthetic technique resurging in practice, warrants a comprehensive safety analysis for informed adoption. Our study aimed to identify complications/side effects of WALANT upper limb procedures through a systematic review and meta-analysis.

METHODS

This PROSPERO-registered study was performed with strict adherence to PRISMA guidelines. Embase, OVIDMedline, Cochrane, Web of Science, and Scopus databases were searched until February 2023. Inclusion criteria involved English articles, reporting complications/side effects in primary WALANT upper limb surgeries. Outcomes included all complications and side effects, data on the anaesthetic mixture, publication year/location, study type, and procedures performed. The meta-analysis employed the Freeman-Tukey Double Arcsine Transformation, computed I2 statistics, and utilized common or random effects models for pooled analysis.

RESULTS

2002 studies were identified; 79 studies met the inclusion criteria representing 15,595 WALANT patients. A total of 301 patients had complications, and the meta-analysis using a random effects model provided a complication rate of 1.7% (95% CI: 0.93-2.7%). The most reported complications were superficial infection (41%, n = 123/300), other/specified (12%, n = 37/300), and recurrent disease (6.7%, n = 20/300). A decade-by-decade analysis revealed no statistically significant difference in complication rates spanning the last three decades (p = 0.42). Adding sodium bicarbonate to the anaesthetic solution significantly reduced postoperative complications (p = 0.025).

CONCLUSION

WALANT has a low overall complication rate of 1.7%, with no significant temporal variation and a significant reduction in complications when sodium bicarbonate is added to the anaesthetic solution. Our findings support the safety of WALANT in upper limb procedures.

REGISTRATION

PROSPERO: CRD42023404018.