Patient satisfaction after distal upper limb surgery under WALANT versus axillary block: A propensity-matched comparative cohort study

Abstract

Distal upper limb surgery is performed under WALANT (Wide Awake Local Anesthesia No Tourniquet) in many outpatient centers because the benefits are numerous: simple, low-cost technique, with fast turnover and short length of stay. In view of a paucity of data concerning patient satisfaction, this non-randomized cohort study was designed to compare EVAN-LR anesthesia satisfaction questionnaire results (information, pain, expectation, attention, discomfort: 0-100 points) between patients receiving WALANT or axillary nerve block (AxB). After IRB approval, patients (>18 years, stable ASA 1-3) scheduled for outpatient distal upper limb surgery were prospectively enrolled in the two groups. At discharge, patients in both groups received standard information on postoperative recovery and care, with a multimodal analgesic regime (acetaminophen and ketoprofen for 5 days). The primary endpoint was EVAN-LR score before discharge. Secondary endpoints were pain relief and side-effects over a 7-day period. Results were recorded as median and 25-75% interquartile range. Propensity-score-matched analysis was performed. Over the study period, from October 2019 to November 2020, 183 patients were included; 48 WALANT patients were propensity-score matched to 48 AxB patients. Pre-procedural APAIS anxiety score was lower in the WALANT than the AxB group: 9 (IQR, 6-12) vs 12 (IQR, 8-14) (p = 0.01). EVAN-LR scores were similar between the WALANT (78 [72-82]) and the AxB group (73 [67-80]). Incidences of paresthesia and of pain (NRS pain score, opioid rescue) were similar. WALANT patients had shorter length of stay: 135 (110-175) min vs 170 (110-250) min (p = 0.01). The present study demonstrated that WALANT was associated with a high level of patient satisfaction. For clinical relevance and quality of care, WALANT should be proposed in first line for distal limb surgery.

Keywords: Axillary block; Bloc axillaire; Douleur; EVAN score; Pain; Paresthesia; Paresthésie; Satisfaction; Score EVAN; WALANT.