Evidence map›Paper›PMID 35979163›Full record

Observational studyWorld journal of gastroenterology2022

Usefulness of serum C-reactive protein and calprotectin for the early detection of colorectal anastomotic leakage: A prospective observational study.

Nuno J G Rama, Marlene C C Lages, Maria Pedro S Guarino, Óscar Lourenço, Patrícia C Motta Lima, Diana Parente, Cândida S G Silva, Ricardo Castro, Ana Bento, Anabela Rocha and 2 more

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in World journal of gastroenterology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 12% 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

12 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. 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
    Review
  8. Article
  9. Review
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  11. Article
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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

12 authors at 3 institutions in 2 countries.

Nuno J G RamaColorectal Surgical Division, Leiria Hospital Centre, Leiria 2410-021, Portugal.
Marlene C C LagesCenter for Innovative Care and Health Technology (ciTechCare), Polytechnic of Leiria, Leiria 2410-541, Portugal.
Maria Pedro S GuarinoCenter for Innovative Care and Health Technology (ciTechCare), Polytechnic of Leiria, Leiria 2410-541, Portugal.
Óscar LourençoFaculty of Economics, CeBER, University of Coimbra, Coimbra 3000-137, Portugal.
Patrícia C Motta LimaColorectal Surgical Division, Leiria Hospital Centre, Leiria 2410-021, Portugal.
Diana ParenteColorectal Surgical Division, Leiria Hospital Centre, Leiria 2410-021, Portugal.
Cândida S G SilvaCenter for Innovative Care and Health Technology (ciTechCare), Polytechnic of Leiria, Leiria 2410-541, Portugal.
Ricardo CastroClinical Pathology Division, Leiria Hospital Centre, Leiria 2410-541, Portugal.
Ana BentoClinical Pathology Division, Leiria Hospital Centre, Leiria 2410-541, Portugal.
Anabela RochaAbel Salazar Biomedical Institute (ICBAS), University of Oporto, Oporto 4099-002, Portugal.
Fernando Castro-PocasAbel Salazar Biomedical Institute (ICBAS), University of Oporto, Oporto 4099-002, Portugal.
João PimentelFaculty of Medicine, University of Coimbra, Coimbra 3004-531, Portugal.
Instituto Politécnico de Leiria · PTInstitute of Biomedical Science · GBUniversity of Coimbra · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundColorectal anastomotic leakage (CAL) is one of the most dreaded complications after colorectal surgery, with an incidence that can be as high as 27%. This event is associated with increased morbidity and mortality; therefore, its early diagnosis is crucial to reduce clinical consequences and costs. Some biomarkers have been suggested as laboratory tools for the diagnosis of CAL.

aimTo assess the usefulness of plasma C-reactive protein (CRP) and calprotectin (CLP) as early predictors of CAL.

methodsA prospective monocentric observational study was conducted including patients who underwent colorectal resection with anastomosis, from March 2017 to August 2019. Patients were divided into three groups: G1 - no complications; G2 - complications not related to CAL; and G3 - CAL. Five biomarkers were measured and analyzed in the first 5 postoperative days (PODs), namely white blood cell (WBC) count, eosinophil cell count (ECC), CRP, CLP, and procalcitonin (PCT). Clinical criteria, such as abdominal pain and clinical condition, were also assessed. The correlation between biomarkers and CAL was evaluated. Receiver operating characteristic (ROC) curve analysis was used to compare the accuracy of these biomarkers as predictors of CAL, and the area under the ROC curve (AUROC), specificity, sensitivity, positive predictive value, and negative predictive value (NPV) during this period were estimated.

resultsIn total, 25 of 396 patients developed CAL (6.3%), and the mean time for this diagnosis was 9.0 ± 6.8 d. Some operative characteristics, such as surgical approach, blood loss, intraoperative complications, and duration of the procedure, were notably related to the development of CAL. The length of hospital stay was markedly higher in the group that developed CAL compared with the group with complications other than CAL and the group with no complications (median of 21 d

conclusionCRP and CLP are moderate predictors of CAL. However, the combination of these biomarkers presents an increased diagnostic accuracy, potentially decreasing the time to CAL diagnosis.

Indexed as

Anastomotic LeakColorectal NeoplasmsAbdominal PainBiomarkersC-Reactive ProteinEarly DiagnosisHumansLeukocyte L1 Antigen ComplexProspective StudiesROC CurveBiomarkersC-Reactive ProteinLeukocyte L1 Antigen ComplexAnastomotic leakageBiomarkersCalprotectinColorectalC-reactive proteinSurgery

Identifiers

PMID35979163
PMCPMC9260864
OpenAlexW4283370130

What OpenQuestion holds

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LicenceCC BY-NC
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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.