Evidence map›Paper›PMID 33555423›Full record

SynthesisInternational journal of colorectal disease2021

C-reactive protein can predict anastomotic leak in colorectal surgery: a systematic review and meta-analysis.

Denise E Yeung, Elizabeth Peterknecht, Shahab Hajibandeh, Shahin Hajibandeh, Andrew W Torrance

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in International journal of colorectal disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
6.3field-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.

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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 99 citations in OpenAlex.

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  18. C-reactive protein and digestive pathologies: A narrative review for daily clinical use.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2025
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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 1 country.

Denise E YeungDepartment of General Surgery, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK. denise.yeung@nhs.net.ORCID http://orcid.org/0000-0001-9118-4818
Elizabeth PeterknechtDepartment of General Surgery, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK.ORCID https://orcid.org/0000-0003-2848-8848
Shahab HajibandehDepartment of General Surgery, Glan Clwyd Hospital, Rhyl, Denbighshire, UK.ORCID https://orcid.org/0000-0002-3294-4335
Shahin HajibandehDepartment of General Surgery, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK.ORCID https://orcid.org/0000-0001-6159-1068
Andrew W TorranceDepartment of General Surgery, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK.ORCID https://orcid.org/0000-0003-0558-8280
Sandwell & West Birmingham Hospitals NHS Trust · GBGlan Clwyd Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnastomotic leakage (AL) is one of the most significant complications after colorectal surgery, affecting length of stay, patient morbidity, mortality, and long-term oncological outcome. Serum C-reactive protein (CRP) level rises in infective and inflammatory states. Elevated CRP has been shown to be associated with anastomotic leak.

objectivePerform a meta-analysis of current CRP data in AL after colorectal surgery. DATA SOURCES: MEDLINE, EMBASE, CINAHL, CENTRAL databases STUDY SELECTION: Comparative studies studying serum CRP levels in adult patients with and without AL after colorectal surgery. INTERVENTION(S): Elective and emergency open, laparoscopic or robotic colorectal excisions for cancer and benign pathology.

main outcome measuresMean serum CRP measurements between post-operative days (POD) 1 through 7 in patients with and without AL. Perform ROC analysis to determine cut-off CRP values to indicate AL.

resultsTwenty-three studies with 6647 patients (482 AL). Pooled mean time to diagnosis of AL was 7.70 days. AL associated with higher CRP on POD1 (mean difference (MD) 15.19, 95% CI 5.88-24.50, p = 0.001), POD2 (MD 51.98, 05% CI 37.36-66.60, p < 0.00001), POD3 (MD 96.92, 95% CI 67.96-125.89, p < 0.00001), POD4 (MD 93.15, 95% CI 69.47-116.84, p < 0.00001), POD5 (MD 112.10, 95% CI 89.74-134.45, p < 0.00001), POD6 (MD 98.38, 95% CI 80.29-116.46, p < 0.00001), and POD7 (MD 106.41, 95% CI 75.48-137.35, p < 0.00001) compared with no AL. ROC analysis identified a cut-off CRP of 148 mg/l on POD3 with sensitivity and specificity of 95%. On POD4 through POD7, cut-off levels were 123 mg/l, 115 mg/l, 105 mg/l, and 96 mg/l, respectively, with sensitivity and specificity of 100%. LIMITATIONS: Study heterogeneity, some characteristics unreported, no RCT

conclusionsAL is associated with higher CRP levels on each post-operative day compared to no AL after colorectal surgery. The cut-off CRP values can be used to predict AL to expedite investigation and treatment.

Indexed as

Colorectal SurgeryDigestive System Surgical ProceduresAdultAnastomotic LeakBiomarkersC-Reactive ProteinHumansROC CurveBiomarkersC-Reactive ProteinAnastomotic leakColorectal surgeryC-reactive protein

Identifiers

PMID33555423
OpenAlexW3128516092

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.