Evidence map›Paper›PMID 40199797›Full record

SynthesisCanadian journal of anaesthesia = Journal canadien d'anesthesie2025

Optimal local anesthetic for spinal anesthesia in patients undergoing ambulatory non-arthroplasty surgery: a systematic review and Bayesian network meta-analysis of randomized controlled trials.

Narinder P Singh, Naveed T Siddiqui, Jeetinder K Makkar, Ryan Guffey, Preet M Singh

Registry-linked trialAbstract readNetwork Meta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07239999 (Randomized Controlled Trial Comparing Spinal Anesthesia With 1% Chloroprocaine Versus 1% Mepivacaine in Patients Undergoing Outpatient Primary Total Knee Arthroplasty), which is not on this map. Cited by 3 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07239999 phase4not yet recruitingnot on this mapstarted 2026, after this paper: background citation

Randomized Controlled Trial Comparing Spinal Anesthesia With 1% Chloroprocaine Versus 1% Mepivacaine in Patients Undergoing Outpatient Primary Total Knee Arthroplasty

TypeinterventionalSponsorNova Scotia Health AuthorityRan2026 to 2027Enrolled170ConditionsRecovery Period, AnesthesiaArmsMepivacaine Injection, Chloroprocaine Injection
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Narinder P SinghDepartment of Anesthesia and Pain Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada. nscjk2006@gmail.com.ORCID 0000-0002-1538-8728
Naveed T SiddiquiDepartment of Anesthesia and Pain Management, Sinai Health, Mount Sinai Hospital, Toronto, ON, Canada.
Jeetinder K MakkarDepartment of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA.
Ryan GuffeyDepartment of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA.
Preet M SinghDepartment of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDosing and types of local anesthetic agents for spinal anesthesia in ambulatory settings vary significantly. We sought to conduct a network meta-analysis to evaluate the effect of the type and dose of local anesthetic on outcomes in patients undergoing ambulatory surgery.

methodsAfter PROSPERO registration (CRD42023399356), we searched various databases for randomized controlled trials (RCTs) evaluating adult patients undergoing daycare surgery under spinal anesthesia. Most included trials focused on patients undergoing knee arthroscopy, while other covered procedures were perineal, lower abdominal, and limb surgeries. Unfortunately, we could not include trials on arthroplasty surgery owing to the lack of RCTs in this area. We used Confidence in Network Meta-Analysis (CINeMA) to assess the confidence in the estimates, and we used surface under the cumulative ranking curve (SUCRA) to determine the probability rank order. The primary outcome was the time to discharge. Intraoperative effectiveness of anesthetic, sensory, and motor blockade duration; time to first micturition; time to ambulation; and adverse effects such as urinary retention and transient neurologic symptoms (TNS) were the secondary outcomes.

resultsOverall, this study included 44 trials comprising 3,299 patients, each comprising 11 distinct agents (2-chloroprocaine, articaine, high-dose bupivacaine, low-dose bupivacaine, lidocaine, high-dose levobupivacaine, low-dose levobupivacaine, mepivacaine, prilocaine, high-dose ropivacaine, and low-dose ropivacaine). Low- to moderate-certainty evidence showed that 2-chloroprocaine, lidocaine, and mepivacaine were superior for discharge readiness, while 2-chloroprocaine ranked highest for other outcomes (sensory and motor block duration, time to first ambulation, and spontaneous voiding).

conclusionsEvidence supports 2-chloroprocaine for short-duration spinal anesthesia in the ambulatory setting. STUDY REGISTRATION: PROSPERO ( CRD42023399356 ); first submitted 13 February 2023.

Indexed as

Ambulatory Surgical ProceduresAnesthesia, SpinalAnesthetics, LocalBayes TheoremHumansRandomized Controlled Trials as TopicAnesthetics, Localambulationambulatory surgerydaycare surgerydischargemicturitionnetwork meta-analysisoutpatient surgeryspinal anesthesia

Identifiers

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.