Daily Ards Research Analysis
Analyzed 1 papers and selected 1 impactful papers.
Summary
A registered systematic review and meta-analysis of 40 studies (N=477,701) finds that preoperative hypoalbuminaemia is strongly associated with postoperative pulmonary complications and mortality after general anaesthesia. The pooled adjusted odds ratio was 2.88, with signal varying by surgery type, supporting albumin as a perioperative prognostic biomarker.
Research Themes
- Perioperative risk stratification
- Biomarkers for postoperative pulmonary complications
- Prognostic meta-analysis in anesthesia
Selected Articles
1. Hypoalbuminaemia contributes to postoperative pulmonary complications and mortality: a systematic review and meta-analysis.
This PROSPERO-registered systematic review and meta-analysis (40 studies; 477,701 patients) shows that preoperative hypoalbuminaemia is associated with markedly higher odds of postoperative pulmonary complications and mortality after general anaesthesia (adjusted OR 2.88, 95% CI 2.50–3.32). The strength of association varies by surgical type, indicating context-specific risk.
Impact: It synthesizes a large body of evidence linking a readily measurable biomarker (albumin) to postoperative pulmonary outcomes and mortality, informing perioperative risk stratification.
Clinical Implications: Incorporate preoperative serum albumin into perioperative risk assessment; consider optimization strategies (e.g., nutritional support) for hypoalbuminaemic patients while recognizing association does not prove benefit from albumin correction.
Key Findings
- Across 40 studies (N=477,701), preoperative hypoalbuminaemia was associated with higher PPCs and mortality after general anaesthesia.
- Pooled adjusted analysis of 18 studies yielded OR 2.88 (95% CI 2.50–3.32; P<0.01).
- Association strength differed by surgery type; sensitivity analysis was performed.
- The review was registered (PROSPERO CRD42024540493) and used Newcastle–Ottawa Scale for study quality.
Methodological Strengths
- Prospective registration (PROSPERO) and predefined protocol
- Use of adjusted effect estimates with sensitivity analysis
Limitations
- Predominantly observational evidence with potential residual confounding and selection bias
- Heterogeneity across surgical types and possible publication bias; causal inference is limited
Future Directions: Prospective interventional trials to test whether correcting hypoalbuminaemia reduces PPCs; develop calibrated risk models integrating albumin with other perioperative predictors; standardize albumin thresholds by surgery type.
OBJECTIVE: This review aimed to assess whether hypoalbuminaemia can predict postoperative pulmonary complications (PPCs) and mortality in patients receiving general anaesthesia for surgery. METHODS: PubMed, Web of Science, EMBASE, and the Cochrane Library were searched for relevant articles published up to 18 July 2024. Three authors independently reviewed the studies and assessed the quality of related articles via the Newcastle‒Ottawa Scale. The data were recorded, and a meta-analysis was performed using Review Manager version 5.4.1. RESULTS: A total of 40 studies with 477,701 patients were included in the meta-analysis. Adjusted data were pooled to calculate the odds ratio (OR). A sensitivity test was conducted. A meta-analysis of 18 studies demonstrated that hypoalbuminaemia was a significant predictor of PPCs and mortality after general anaesthesia (OR: 2.88, 95% CI 2.50 to 3.32, P < 0.01, I CONCLUSIONS: Preoperative hypoalbuminaemia is significantly associated with postoperative pulmonary complications and has different correlation coefficients in different types of surgeries. TRIAL REGISTRATION: This systematic review and meta-analysis was registered at the International Prospective Register of Systematic Reviews (Number CRD42024540493).