Evidence map›Paper›PMID 34873007›Full record

ArticleBMJ open2021

Causes of infective endocarditis in the Western Cape, South Africa: a prospective cohort study using a set protocol for organism detection and central decision making by an endocarditis team.

Alfonso Jan Kemp Pecoraro, Colette Pienaar, Philippus George Herbst, Simon Poerstamper, Lloyd Joubert, Jantjie Taljaard, Hans Prozesky, Jacques Janson, Mae Newton-Foot, Anton Frans Doubell

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. A case series of confirmedEuropean heart journal. Case reports · 2026
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  3. Open heart · 2025
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  4. Including louse-borneLancet regional health. Americas · 2025
    Article
  5. Infective endocarditis: it takes a team.European heart journal · 2025
    Review
  6. Favourable outcome ofSouthern African journal of infectious diseases · 2025
    Article
  7. Article
  8. Hidden Burden ofOpen forum infectious diseases · 2024
    Review
  9. Article
  10. Article
  11. Article
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

10 authors at 1 institution in 1 country.

Alfonso Jan Kemp PecoraroMedicine, Division of Cardiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa pecoraro@sun.ac.za.ORCID 0000-0001-6549-9402
Colette PienaarMicrobiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Philippus George HerbstMedicine, Division of Cardiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Simon PoerstamperMedicine, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Lloyd JoubertMedicine, Division of Cardiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Jantjie TaljaardMedicine, Division of Cardiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Hans ProzeskyMedicine, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Jacques JansonSurgery, Division of Cardiothoracic Surgery, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Mae Newton-FootMicrobiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Anton Frans DoubellMedicine, Division of Cardiology, Stellenbosch University Faculty of Medicine and Health Sciences, Cape Town, Western Cape, South Africa.
Western Cape Department of Health · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBlood culture negative infective endocarditis (BCNIE) poses both a diagnostic and therapeutic challenge. High rates of BCNIE reported in South Africa have been attributed to antibiotic use prior to blood culture sampling.

objectivesTo assess the impact of a systematic approach to organism detection and identify the causes of infective endocarditis (IE), in particular causes of BCNIE.

designProspective cohort study.

methodsThe Tygerberg Endocarditis Cohort study prospectively enrolled patients with IE between November 2019 and February 2021. A set protocol for organism detection with management of patients by an endocarditis team was employed. This prospective cohort was compared with a retrospective cohort of patients with IE admitted between January 2017 and December 2018.

resultsOne hundred and forty patients with IE were included, with 75 and 65 patients in the retrospective and prospective cohorts, respectively. Baseline demographic characteristics were similar with a mean age of 39.6 years and male predominance (male sex=67.1%). The rate of BCNIE was lower in the prospective group (28/65 or 43.1%) compared with the retrospective group (47/75 or 62.7%; p=0.039). The BCNIE in-hospital mortality rate in the retrospective cohort was 23.4% compared with 14.2% in the prospective cohort (p=0.35). A cause was identified (including non-culture techniques) in 86.2% of patients in the prospective cohort, with

conclusionThe introduction of a set protocol for organism detection, managed by an endocarditis team, has identified

Indexed as

EndocarditisAdultCohort StudiesDecision MakingHumansMaleProspective StudiesRetrospective StudiesSouth Africaadult cardiologydiagnostic microbiologyepidemiologymicrobiologyvalvular heart disease

Identifiers

PMID34873007
PMCPMC8650472
OpenAlexW4200450791

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.