Evidence map›Paper›PMID 27965248›Full record

ArticleBMJ open2016

Gender disparities in red blood cell transfusion in elective surgery: a post hoc multicentre cohort study.

Hans Gombotz, Günter Schreier, Sandra Neubauer, Peter Kastner, Axel Hofmann

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

19 citing papers in PubMed, 45 citations in OpenAlex.

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  16. Perioperative Transfusions for Gastroesophageal Cancers: Risk Factors and Short- and Long-Term Outcomes.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2021
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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

5 authors at 2 institutions in 3 countries.

Hans GombotzDepartment of Anaesthesiology and Intensive Care, General Hospital Linz, Vienna, Austria.
Günter SchreierAIT Austrian Institute of Technology GmbH 8020, Graz, Austria.
Sandra NeubauerAIT Austrian Institute of Technology GmbH 8020, Graz, Austria.
Peter KastnerAIT Austrian Institute of Technology GmbH 8020, Graz, Austria.
Axel HofmannDepartment of Anaesthesiology, University Hospital Zurich, Zurich, Switzerland.
Austrian Institute of Technology · ATUniversity of Western Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesA post hoc gender comparison of transfusion-related modifiable risk factors among patients undergoing elective surgery. SETTINGS: 23 Austrian centres randomly selected and stratified by region and level of care.

participantsWe consecutively enrolled in total 6530 patients (3465 women and 3065 men); 1491 underwent coronary artery bypass graft (CABG) surgery, 2570 primary unilateral total hip replacement (THR) and 2469 primary unilateral total knee replacement (TKR).

main outcome measuresPrimary outcome measures were the number of allogeneic and autologous red blood cell (RBC) units transfused (postoperative day 5 included) and differences in intraoperative and postoperative transfusion rate between men and women. Secondary outcomes included perioperative blood loss in transfused and non-transfused patients, volume of RBCs transfused, perioperative haemoglobin values and circulating red blood volume on postoperative day 5.

resultsIn all surgical groups, the transfusion rate was significantly higher in women than in men (CABG 81 vs 49%, THR 46 vs 24% and TKR 37 vs 23%). In transfused patients, the absolute blood loss was higher among men in all surgical categories while the relative blood loss was higher among women in the CABG group (52.8 vs 47.8%) but comparable in orthopaedic surgery. The relative RBC volume transfused was significantly higher among women in all categories (CABG 40.0 vs 22.3; TKR 25.2 vs 20.2; THR 26.4 vs 20.8%). On postoperative day 5, the relative haemoglobin values and the relative circulating RBC volume were higher in women in all surgical categories.

conclusionsThe higher transfusion rate and volume in women when compared with men in elective surgery can be explained by clinicians applying the same absolute transfusion thresholds irrespective of a patient's gender. This, together with the common use of a liberal transfusion strategy, leads to further overtransfusion in women.

Indexed as

Sex FactorsAgedAged, 80 and overArthroplasty, Replacement, HipArthroplasty, Replacement, KneeAustriaBlood Loss, SurgicalCohort StudiesCoronary Artery BypassElective Surgical ProceduresErythrocyte TransfusionFemaleHealthcare DisparitiesHemoglobinsHumansLogistic ModelsHemoglobinsgenderoverusePatient blood managementtransfusion

Identifiers

PMID27965248
PMCPMC5168603
OpenAlexW2563606822

What OpenQuestion holds

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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.