SynthesisScientific reports2022
Pre-operative iron increases haemoglobin concentration before abdominal surgery: a systematic review and meta-analysis of randomized controlled trials.
Synthesis in Scientific reports, 2022. 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 10 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
10 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Impact of Prehabilitation in Major Gastrointestinal Oncological Surgery: a Systematic Review.Journal of gastrointestinal cancer · 2025Pooled it
- Score prediction of anastomotic leak in colorectal surgery: a systematic review.Surgical endoscopy · 2024Pooled it
- Article
- Contemporary preoperative assessment for colorectal surgery: new insights and developments.BMJ open gastroenterology · 2026Review
- Interventions for iron deficiency with or without anaemia in visceral surgery: recommendations for future research.BJA open · 2026Article
- Perioperative Blood Management.Journal of clinical medicine · 2025Review
- Management of preoperative anemia: iron replacement.Blood transfusion = Trasfusione del sangue · 2025Article
- Impact of Preoperative Nutritional Support on Surgical Outcomes in Gastrointestinal Surgeries: A Systematic Review.Cureus · 2024Review
- SucrosomialPharmaceuticals (Basel, Switzerland) · 2023Review
- Association between preoperative anemia optimization and major complications after non-cardiac surgery: a retrospective analysis.Brazilian journal of anesthesiology (Elsevier)Article
Corrections and comments
- Erratum issued
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Professional surgical societies recommend the identification and treatment of pre-operative anaemia in patients scheduled for abdominal surgery. Our aim was to determine if pre-operative iron allows correction of haemoglobin concentration and decreased incidence of peri-operative blood transfusion in patients undergoing major abdominal surgery. MEDLINE, Embase and CENTRAL were searched for RCTs written in English and assessing the effect of pre-operative iron on the incidence of peri-operative allogeneic blood transfusion in patients undergoing major abdominal surgery. Pooled relative risk (RR), risk difference (RD) and mean difference (MD) were obtained using models with random effects. Heterogeneity was assessed using the Q-test and quantified using the I
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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.