Evidence map›Paper›PMID 34525959›Full record

ArticleBMC anesthesiology2021

Spinal versus general anesthesia for patients undergoing outpatient total knee arthroplasty: a national propensity matched analysis of early postoperative outcomes.

Mark C Kendall, Alexander D Cohen, Stephanie Principe-Marrero, Peter Sidhom, Patricia Apruzzese, Gildasio De Oliveira

Registry-linked trialOpen access · goldAbstract readComparative Study
In one paragraph

Article in BMC anesthesiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07334132 (General Anaesthesia vs Spinal Anaesthesia), which is not on this map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
6.5field-weighted citation impact, top 2% of its field
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.

NCT07334132 phase4not yet recruitingnot on this mapstarted 2026, after this paper: background citation

General Anaesthesia vs Spinal Anaesthesia: Patient Outcomes and Success in Outpatient Primary Total Knee and Hip Arthroplasty

TypeinterventionalSponsorRegion Örebro CountyRan2026 to 2029Enrolled600ConditionsOsteo Arthritis Knee and Hip, Osteo Arthritis, Inflammatory Joint Disease (IJD)ArmsGeneral Anaesthesia, Spinal Anesthesia (bupivacaine)
3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

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  11. Administration of Low-dose Hyperbaric Bupivacaine for Spinal Anesthesia in the Setting of Outpatient Arthroplasty.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2024
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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

6 authors at 2 institutions in 1 country.

Mark C KendallDepartment of Anesthesiology, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Davol #129, Providence, RI, 02903, USA. mark.kendall@lifespan.org.
Alexander D CohenDepartment of Anesthesiology, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Davol #129, Providence, RI, 02903, USA.
Stephanie Principe-MarreroDepartment of Anesthesiology, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Davol #129, Providence, RI, 02903, USA.
Peter SidhomDepartment of Anesthesiology, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Davol #129, Providence, RI, 02903, USA.
Patricia ApruzzeseDepartment of Anesthesiology, Rhode Island Hospital, Providence, RI, USA.
Gildasio De OliveiraDepartment of Anesthesiology, The Warren Alpert Medical School of Brown University, 593 Eddy Street, Davol #129, Providence, RI, 02903, USA.
Brown University · USRhode Island Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA comparison of different anesthetic techniques to evaluate short term outcomes has yet to be performed for patients undergoing outpatient knee replacements. The aim of this investigation was to compare short term outcomes of spinal (SA) versus general anesthesia (GA) in patients undergoing outpatient total knee replacements.

methodsThe ACS NSQIP datasets were queried to extract patients who underwent primary, elective, unilateral total knee arthroplasty (TKA) between 2005 and 2018 performed as an outpatient procedure. The primary outcome was a composite score of serious adverse events (SAE). The primary independent variable was the type of anesthesia (e.g., general vs. spinal).

resultsA total of 353,970 patients who underwent TKA procedures were identified comprising of 6,339 primary, elective outpatient TKA procedures. Of these, 2,034 patients received GA and 3,540 received SA. A cohort of 1,962 patients who underwent outpatient TKA under GA were propensity matched for covariates with patients who underwent outpatient TKA under SA. SAE rates at 72 h after surgery were not greater in patients receiving GA compared to SA (0.92%, 0.66%, P = 0.369). In contrast, minor adverse events were greater in the GA group compared to SA (2.09%, 0.51%), P < 0.001. The rate of postoperative transfusion was greater in the patients receiving GA.

conclusionsThe type of anesthetic technique, general or spinal anesthesia does not alter short term SAEs, readmissions and failure to rescue in patients undergoing outpatient TKR surgery. Recognizing the benefits of SA tailored to the anesthetic management may maximize the clinical benefits in this patient population.

Indexed as

AgedAmbulatory Surgical ProceduresAnesthesia, GeneralAnesthesia, SpinalArthroplasty, Replacement, KneeCohort StudiesDatabases, FactualFemaleHumansMaleMiddle AgedOutpatientsPostoperative ComplicationsPropensity ScoreUnited StatesGeneral anesthesiaKnee surgeryOutpatient total knee arthroplastyPostoperative outcomesSpinal anesthesia

Identifiers

PMID34525959
PMCPMC8442468
OpenAlexW3201075123

What OpenQuestion holds

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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.