Evidence map›Paper›PMID 33688947›Full record

Observational studyBJS open2021

Impact of bodyweight-adjusted antimicrobial prophylaxis on surgical-site infection rates.

L Salm, W R Marti, D J Stekhoven, C Kindler, M Von Strauss, E Mujagic, W P Weber

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BJS open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 19% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Observational
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

7 authors at 3 institutions in 1 country.

L SalmDepartment of General Surgery, Kantonsspital Aarau, Aarau, Switzerland.
W R MartiChirurgie Aarau, Aarau, Switzerland.
D J StekhovenNEXUS Personalized Health Technologies, ETH Zurich, Zurich, Switzerland.
C KindlerDepartment of Anaesthesia, Kantonsspital Aarau, Aarau, Switzerland.
M Von StraussDepartment of General Surgery, University Hospital Basle, Basle, Switzerland.
E MujagicDepartment of General Surgery, University Hospital Basle, Basle, Switzerland.
W P WeberDepartment of General Surgery, University Hospital Basle, Basle, Switzerland.
Kantonsspital Aarau · CHETH Zurich · CHHirslanden Klinik Aarau · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAntimicrobial prophylaxis (AMP) adjustment according to bodyweight to prevent surgical-site infections (SSI) is controversial. The impact of weight-adjusted AMP dosing on SSI rates was investigated here.

methodsResults from a first study of patients undergoing visceral, vascular or trauma operations, and receiving standard AMP, enabled retrospective evaluation of the impact of bodyweight and BMI on SSI rates, and identification of patients eligible for weight-adjusted AMP. In a subsequent observational prospective study, patients weighing at least 80 kg were assigned to receive double-dose AMP. Risk factors for SSI, including ASA classification, duration and type of surgery, wound class, diabetes, weight in kilograms, BMI, age, and AMP dose, were evaluated in multivariable analysis.

resultsIn the first study (3508 patients), bodyweight and BMI significantly correlated with higher rates of all SSI subclasses (both P < 0.001). An 80-kg cut-off identified patients receiving single-dose AMP who were at higher risk of SSI. In the prospective study (2161 patients), 546 patients weighing 80 kg or more who received only single-dose AMP had higher rates of all SSI types than a group of 1615 who received double-dose AMP (odds ratio (OR) 4.40, 95 per cent c.i. 3.18 to 6.23; P < 0.001). In multivariable analysis including 5021 patients from both cohorts, bodyweight (OR 1.01, 1.00 to 1.02; P = 0.008), BMI (OR 1.01, 1.00 to 1.02; P = 0.007) and double-dose AMP (OR 0.33, 0.23 to 0.46; P < 0.001) among other variables were independently associated with SSI rates.

conclusionDouble-dose AMP decreases SSI rates in patients weighing 80 kg or more.

Indexed as

Body WeightAdultAgedAnti-Bacterial AgentsAntibiotic ProphylaxisBody Mass IndexFemaleHumansMaleMiddle AgedProspective StudiesRetrospective StudiesRisk FactorsSurgical Wound InfectionAnti-Bacterial Agents

Identifiers

PMID33688947
PMCPMC7944861
OpenAlexW3133796564

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.