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Postoperative complications elevated for patients with systemic lupus erythematosus (opens in a new tab)

medicalxpress.com · 2026-11-03

Short answerEvidenceSource

Short answer

Supported

Supported.

The story matches what the study reports.

  • 7 supported

Checked against the study summary. The full text wasn't available, so some details couldn't be settled either way.

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Follow the evidence trail
1
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NewsLink checks it

Supported

Every claim holds up. All seven claims match what the study reports.

  • 7 supported
Open claim evidence
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Then inspect each claim

Evidence layer

Claim by claim

Each claim gets a verdict. Expand it to see the evidence directly below.

7 claims in this story

Showing all 7 claimsChoose a verdict to focus the list.

Claim 1 of 7SupportedPatients with systemic lupus erythematosus (SLE) have an increased risk for postoperative complications, according to a study published online Oct. 9 in Rheumatology International.View evidenceHide evidence

Why this verdict

The abstract reports that SLE was associated with increased risks of several 180-day postoperative complication categories versus matched controls. The claim is framed as a study finding about increased risk and is consistent with the abstract-level evidence.

1

Study evidence

SLE was associated with increased risk of surgical complications compared with matched controls.RR 2.20 (95% CI 1.91-2.54)

“We conducted a nationwide retrospective matched cohort study using DATASUS data.”
Claim 2 of 7SupportedThe researchers conducted a nationwide retrospective matched cohort study to compare postoperative outcomes between patients with SLE and matched controls, including 1,708 patients with SLE and 8,540 controls.View evidenceHide evidence

As stated1,708 patients with SLE and 8,540 controls

Why this verdict

The abstract profile supports a nationwide retrospective matched cohort design comparing SLE patients with matched controls, with 1,708 SLE patients and 8,540 controls.

1

Study evidence

SLE was associated with increased risk of surgical complications compared with matched controls.RR 2.20 (95% CI 1.91-2.54)

“We conducted a nationwide retrospective matched cohort study using DATASUS data.”
Claim 3 of 7SupportedSLE was associated with increased risks for surgical, clinical, infectious, and other procedure- or care-related complications, with risk ratios of 2.20, 3.30, 3.66, and 11.33, respectively.View evidenceHide evidence

As statedrisk ratios 2.20, 3.30, 3.66, and 11.33

Why this verdict

The stated categories and risk ratios match the abstract-reported estimates: surgical RR 2.20, clinical RR 3.30, infectious RR 3.66, and other procedure- or care-related complications RR 11.33.

1

Study evidence

SLE was associated with increased risk of surgical complications compared with matched controls.RR 2.20 (95% CI 1.91-2.54)

“We conducted a nationwide retrospective matched cohort study using DATASUS data.”
Claim 4 of 7SupportedSLE was associated with obstetric complications among patients undergoing obstetric procedures, with a risk ratio of 1.87.View evidenceHide evidence

As statedrisk ratio 1.87

Why this verdict

The abstract reports that among patients undergoing obstetric procedures, SLE was associated with obstetric complications with RR 1.87.

1

Study evidence

SLE was associated with increased risk of surgical complications compared with matched controls.RR 2.20 (95% CI 1.91-2.54)

“We conducted a nationwide retrospective matched cohort study using DATASUS data.”
Claim 5 of 7SupportedWithin the SLE cohort, cardiovascular risk was independently associated with higher odds of clinical and other procedure- or care-related complications, with adjusted odds ratios of 2.75 and 5.46, respectively.View evidenceHide evidence

As statedadjusted odds ratios 2.75 and 5.46

Why this verdict

The abstract-level profile reports that within the SLE cohort, cardiovascular risk was independently associated with higher odds of clinical complications and other procedure- or care-related complications, with adjusted ORs of 2.75 and 5.46, respectively.

1

Study evidence

Cardiovascular risk independently associated with higher odds of clinical postoperative complications within the SLE cohort.adjusted OR 2.75 (95% CI 1.36–5.54)

“Multivariable analyses assessed factors associated with outcomes within the SLE cohort.”
Claim 6 of 7SupportedIn sensitivity analyses restricted to elective procedures and excluding patients classified with cutaneous lupus, the associations between SLE and surgical, clinical, and infectious complications remained significant.View evidenceHide evidence

Why this verdict

The abstract reports sensitivity analyses restricted to elective procedures and excluding cutaneous lupus classifications, and states that associations between SLE and surgical, clinical, and infectious complications remained significant.

1

Study evidence

Association between SLE and surgical postoperative complications remained statistically significant after (a) restricting to elective procedures and (b) excluding patients with cutaneous lupus.

“Sensitivity analyses comprised restriction to elective procedures and exclusion of patients classified with cutaneous lupus.”
Claim 7 of 7SupportedThe authors write that the findings identify a higher-risk perioperative profile in this population, while the relative contributions of underlying disease activity and immunosuppressive treatment warrant further investigation.View evidenceHide evidence

Why this verdict

The paper profile’s discussion states that patients with SLE had a higher-risk perioperative profile and that the contributions of disease activity and immunosuppressive treatment were unresolved and warrant further investigation. The claim is appropriately hedged and presented as the authors’ interpretation.

1

Study evidence

SLE was associated with increased risk of surgical complications compared with matched controls.RR 2.20 (95% CI 1.91-2.54)

“We conducted a nationwide retrospective matched cohort study using DATASUS data.”
2

Study evidence

Cardiovascular risk independently associated with higher odds of clinical postoperative complications within the SLE cohort.adjusted OR 2.75 (95% CI 1.36–5.54)

“Multivariable analyses assessed factors associated with outcomes within the SLE cohort.”
Then look for missing context

Context layer

What the story left out

Important study details the story did not include.

  • Outcome window: postoperative complications were assessed over 180 days after surgical and obstetric procedures.

    The paper profile specifies a 180-day postoperative outcome window, but the supplied story claims and caveats do not mention the follow-up duration.

    From Retrospective matched cohort (administrative data)

  • Algorithm-defined SLE reactivation occurred in 3.3% of SLE patients.

    The paper profile identifies this as a secondary endpoint, but the supplied story claims and caveats do not mention postoperative SLE reactivation.

    From Retrospective matched cohort; administrative/claims algorithm outcome

  • Key limitation: retrospective administrative-data design creates potential for misclassification of diagnoses, procedures, and complications.

    The story mentions the retrospective matched-cohort design, but the supplied caveats do not acknowledge the administrative/claims-data misclassification limitation, which is material to interpreting the findings.

    From Retrospective matched cohort (administrative data); Within-SLE cohort multivariable regression (secondary administrative

  • Reporting limitation at abstract depth: definitions of complication categories, the SLE reactivation algorithm, full multivariable covariate set, subgroup sizes, and absolute risks are not fully provided.

    The story focuses on relative risks and odds ratios but does not mention that the abstract lacks detailed outcome definitions, model specifications, sensitivity-analysis estimates, subgroup sizes, or absolute risks.

    From Retrospective matched cohort (administrative data); Within-SLE cohort multivariable regression (secondary administrative

7 things the story did carry across
  • Primary study design: nationwide retrospective matched cohort using Brazilian DATASUS administrative data, comparing postoperative outcomes in SLE patients versus matched non-SLE controls.
  • Cohort size and matching framework: 1,708 patients with SLE and 8,540 controls, matched 1:5 on demographic, geographic, surgical-risk, and surgical-category variables.
  • Main findings: SLE was associated with higher risks of surgical, clinical, infectious, and other procedure- or care-related postoperative complications.
  • Obstetric subgroup finding: among patients undergoing obstetric procedures, SLE was associated with higher obstetric complication risk.
  • Within-SLE risk-factor modeling: cardiovascular risk was independently associated with higher odds of clinical and other procedure- or care-related complications.
  • Sensitivity analyses: associations between SLE and surgical, clinical, and infectious complications remained significant when restricted to elective procedures and when excluding cutaneous lupus classifications.
  • Key limitation: residual confounding remains possible despite matching and multivariable analyses; the paper does not resolve contributions of disease activity or immunosuppressive treatment.
Then read the study layer

Study layer

Study at a glance

Scan the study first. Expand only the parts you want to inspect.

Pieces of work

4

Evidence read

study summary

Lead result

secondary data

1Lead resultsecondary dataCompare 180-day postoperative complication risks between patients with systemic lupus erythematosus (SLE) and matched non-SLE controls for surgical and obstetric procedures using nationwide administrative data.Retrospective matched cohort (administrative data)Expand

In plain English

Nationwide retrospective matched cohort (DATASUS) comparing 180-day postoperative complication risks after surgical and obstetric procedures between patients with systemic lupus erythematosus (SLE) and matched non-SLE controls. The study found higher risks of multiple complication categories for SLE patients (surgical, clinical, infectious, other procedure- or care-related) and higher obstetric complications in the obstetric-procedure subgroup; within the SLE cohort, cardiovascular risk factors were associated with higher odds of some complication types. Algorithm-defined SLE reactivation was reported in 3.3%.

Key findings

  • SLE was associated with increased risk of surgical complications compared with matched controls.RR 2.20 (95% CI 1.91-2.54)
  • SLE was associated with increased risk of clinical (non-surgical) complications compared with matched controls.RR 3.30 (95% CI 2.53-4.30)
“We conducted a nationwide retrospective matched cohort study using DATASUS data.”
What this piece can’t prove
  • Retrospective analysis of administrative (DATASUS) data; potential for misclassification of diagnoses, procedures, and complications inherent to claims data.
  • Abstract does not provide detailed definitions for complication categories, the algorithm for SLE reactivation, or the full set of variables included in multivariable models.

2 further details could not be confirmed from the summary.

2secondary dataWithin the SLE cohort, identify factors independently associated with postoperative complications (e.g., cardiovascular risk) using multivariable models.Within-SLE cohort multivariable regression (secondary administrative data)Expand

In plain English

In multivariable models restricted to the SLE cohort (n=1,708) drawn from nationwide DATASUS administrative data, cardiovascular risk was independently associated with greater odds of postoperative clinical complications (adjusted OR 2.75, 95% CI 1.36–5.54) and of other procedure- or care-related complications (adjusted OR 5.46, 95% CI 1.84–16.18) over a 180-day postoperative window.

Key findings

  • Cardiovascular risk independently associated with higher odds of clinical postoperative complications within the SLE cohort.adjusted OR 2.75 (95% CI 1.36–5.54)
  • Cardiovascular risk independently associated with higher odds of other procedure- or care-related postoperative complications within the SLE cohort.adjusted OR 5.46 (95% CI 1.84–16.18)
“Multivariable analyses assessed factors associated with outcomes within the SLE cohort.”
What this piece can’t prove
  • Abstract does not present full covariate set or detailed model specification for the within-SLE multivariable analyses.
  • Authors state that contributions of disease activity and immunosuppressive treatment to postoperative risk were not resolved and warrant further investigation.
3secondary dataEstimate frequency of algorithm-defined SLE reactivation in the postoperative period and explore associated factors (as described).Retrospective matched cohort; administrative/claims algorithm outcomeExpand

In plain English

In a nationwide retrospective matched cohort using Brazilian administrative (DATASUS) data, the authors report that algorithm-defined postoperative SLE reactivation occurred in 3.3% of patients with SLE over a 180-day postoperative window. The outcome was identified using an algorithm applied to claims/administrative data; the abstract does not provide the algorithm definition, validation, or detailed results on factors associated with reactivation.

Key findings

  • Algorithm-defined postoperative SLE reactivation occurred in 3.3% of patients with SLE over the 180-day postoperative period.3.3%
“Algorithm-defined SLE reactivation occurred in 3.3%.”
What this piece can’t prove

4 further details could not be confirmed from the summary.

4secondary dataTest robustness of the SLE–complications association via sensitivity analyses (restricting to elective procedures; excluding cutaneous lupus classifications).Sensitivity analyses (cohort restriction; case-definition exclusion)Expand

In plain English

The study reports two sensitivity analyses of the primary matched-cohort comparison of postoperative complications in patients with SLE versus matched controls: (1) restricting the cohort to elective procedures, and (2) excluding patients classified with cutaneous lupus. Re-estimation of the main associations showed that the links between SLE and surgical, clinical, and infectious postoperative complications remained statistically significant in both sensitivity analyses, suggesting the primary findings were robust to these cohort restrictions.

Key findings

  • Association between SLE and surgical postoperative complications remained statistically significant after (a) restricting to elective procedures and (b) excluding patients with cutaneous lupus.
  • Association between SLE and clinical postoperative complications remained statistically significant after (a) restricting to elective procedures and (b) excluding patients with cutaneous lupus.
“Sensitivity analyses comprised restriction to elective procedures and exclusion of patients classified with cutaneous lupus.”
What this piece can’t prove
  • The abstract does not describe whether matching or covariate adjustment were modified for the restricted/excluded cohorts.

2 further details could not be confirmed from the summary.

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Papers considered

The selected paper, plus nearby candidates.

PubMed, Europe PMC, Crossref · 36 candidate papers

SelectedOpen access

Higher postoperative complication rates in patients with systemic lupus erythematosus undergoing surgical and obstetric procedures: a nationwide retrospective matched cohort study

Rheumatology International · 2026 · PubMed, Europe PMC, Crossref

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