Evidence map›Paper›PMID 32607936›Full record

ArticleSpine deformity2020

Revision surgery and mortality following complex spine surgery: 2-year follow-up in a prospective cohort of 679 patients using the Spine AdVerse Event Severity (SAVES) system.

Tanvir Johanning Bari, Sven Karstensen, Mathias Dahl Sørensen, Martin Gehrchen, John Street, Benny Dahl

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Article in Spine deformity, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.7field-weighted citation impact, top 15% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 17 citations in OpenAlex.

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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 3 institutions in 3 countries.

Tanvir Johanning BariSpine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark. bari.tanvir@gmail.com.ORCID http://orcid.org/0000-0003-0513-7316
Sven KarstensenSpine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark.
Mathias Dahl SørensenSpine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark.
Martin GehrchenSpine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, 2100, Copenhagen, Denmark.
John StreetCombined Neurosurgical and Orthopedic Spine Program, Vancouver General Hospital, University of British Columbia, Floor 6, Blusson Spinal Cord Center, 818 West 10th Ave., Vancouver, BC, V5Z 1M9, Canada.
Benny DahlDepartment of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, 6621 Fannin St, Houston, TX, 77030, USA.
Copenhagen University Hospital · DKBaylor College of Medicine · USUniversity of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designProspective study.

objectiveTo determine the 2-year risk of revision surgery and all-cause mortality after complex spine surgery, and to assess if prospectively registered adverse events (AE) could predict either outcome. Revision surgery and mortality are serious complications to spine surgery. Previous studies of frequency have mainly been retrospective and few studies have employed competing risk survival analyses. In addition, assessment of predictors has focused on preoperative patient characteristics. The effect of perioperative AEs on revision and all-cause mortality risks are not fully understood.

methodsBetween January 1 and December 31, 2013, we prospectively included all patients undergoing complex spine surgery at a single, tertiary institution. Complex spine surgery was defined as conditions deemed too complicated for surgery at a secondary institute, or patients with severe comorbidities requiring multidisciplinary observation and treatment. AEs were registered using the Spine Adverse Event Severity system and patients were followed for minimum 2 years regarding revision surgery and all-cause mortality. Incidences were estimated using competing risk survival analyses and correlation between AEs and either outcome was assessed using proportional odds models.

resultsWe included a complete and consecutive cohort of 679 adult and pediatric patients. Demographics, surgical data, AEs, and events of revision or all-cause mortality were registered. The cumulative incidence of 2-year all-cause revision was 19% (16-22%) and all-cause mortality was 15% (12-18%). Deformity surgery was the surgical category with highest incidence of revision and the highest incidence of all-cause mortality was seen in the tumor group. Across surgical categories, cumulative incidences of 2-year revision ranged between 11% (tumor) and 33% (deformity), whilst 2-year all-cause mortality ranged between 3% (deformity) and 33% (tumor). We found that major intraoperative AEs were associated to increased odds of revision. Deep wound infection was associated to increased odds of all-cause mortality.

conclusionsWe report the cumulative incidences of revision surgery and all-cause mortality following complex spine surgery. We found higher incidences of revision compared to previous retrospective studies. Prospectively registered AEs were correlated to increased odds of revision surgery and all-cause mortality. These results may serve as reference for future interventional studies and aid in identifying at-risk patients. LEVEL OF EVIDENCE: I.

Indexed as

AdultAgedCause of DeathFemaleFollow-Up StudiesHumansIncidenceMaleMiddle AgedOrthopedic ProceduresProspective StudiesReoperationRiskSeverity of Illness IndexSpinal DiseasesSpine2-year outcome2-year revisionAdverse eventMortalityOutcomePostoperative complicationsprospective studyRevisionRisk predictionSpine

Identifiers

PMID32607936
OpenAlexW3040591100

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Registered trials

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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.