Evidence map›Paper›PMID 37889318›Full record

Observational studyArchives of orthopaedic and trauma surgery2024

Postoperative cognitive dysfunction after beach chair positioning compared to supine position in orthopaedic surgery in the elderly.

Philipp Groene, Tanja Schaller, Catharina Zeuzem-Lampert, Margret Rudy, Ben Ockert, Georg Siebenbürger, Thomas Saller, Peter Conzen, Klaus Hofmann-Kiefer

Erratum issuedAbstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in Archives of orthopaedic and trauma surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

1 citing paper in PubMed, 4 citations in OpenAlex.

  1. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Philipp GroeneDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany. philipp.groene@med.uni-muenchen.de.ORCID http://orcid.org/0000-0001-8357-5552
Tanja SchallerDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
Catharina Zeuzem-LampertDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
Margret RudyDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
Ben OckertDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany.
Georg SiebenbürgerDepartment of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany.
Thomas SallerDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
Peter ConzenDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
Klaus Hofmann-KieferDepartment of Anaesthesiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
LMU Klinikum · DELudwig-Maximilians-Universität München · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPostoperative cognitive dysfunction (POCD) occurs in up to 26% of patients older than 60 years 1 week after non-cardiac surgery. Intraoperative beach chair positioning (BCP) is advantageous for some types of shoulder surgery. However, this kind of positioning leads to a downward bound redistribution of blood volume, with possible hypoperfusion of the brain. We hypothesized that patients > 60 years undergoing orthopaedic shoulder surgery in a BCP might experience more POCD than patients operated in the supine position (SP). MATERIAL AND

methodsA single-centre, prospective observational trial of 114 orthopaedic patients was performed. Study groups were established according to the type of intraoperative positioning. Anaesthesiological management was carried out similarly in both groups, including types of anaesthetics and blood pressure levels. POCD was evaluated using the Trail Making Test, the Letter-Number Span and the Regensburger Word Fluency Test. The frequency of POCD 1 week after surgery was considered primary outcome.

resultsBaseline characteristics, including duration of surgery, were comparable in both groups. POCD after 1 week occurred in 10.5% of SP patients and in 21.1% of BCP patients (p = 0.123; hazard ratio 2.0 (CI 95% 0.794-5.038)). After 4 weeks, the incidence of POCD decreased (SP: 8.8% vs. BCP: 5.3%; p = 0.463). 12/18 patients with POCD showed changes in their Word Fluency Tests. Near-infrared spectroscopy (NIRS) values were not lower in patients with POCD compared to those without POCD (54% (50/61) vs. 57% (51/61); p = 0.671).

conclusionPOCD at 1 week after surgery tended to occur more often in patients operated in beach chair position compared to patients in supine position without being statistically significant.

Indexed as

Orthopedic ProceduresOrthopedicsPostoperative Cognitive ComplicationsAgedHumansOxygenPatient PositioningProspective StudiesSupine PositionOxygenBeach chair positionIntraoperative positioningPostoperative cognitive dysfunctionShoulder surgerySupine position

Identifiers

PMID37889318
OpenAlexW4387965869

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.