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Admission hypoalbuminemia is associated with increased mortality and acute kidney injury in burn patientsLow Serum Albumin Linked to Higher Mortality in Burn Patients

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Key Takeaway
Note that admission hypoalbuminemia is associated with increased mortality and AKI risk in patients with burn injuries.

This meta-analysis synthesized data from 9 studies to evaluate the prognostic value of admission serum albumin in patients with burn injuries. The analysis focused on mortality and acute kidney injury (AKI) as primary outcomes, with secondary outcomes including hospital length of stay, ICU length of stay, ventilatory requirements, sepsis, and pulmonary infection.

The meta-analysis found that hypoalbuminemia on admission was significantly associated with increased mortality (OR 9.51; 95% CI, 3.04-29.78). Additionally, admission hypoalbuminemia was associated with an increased risk of acute kidney injury (OR 2.83; 95% CI, 2.49-3.22). These findings suggest that serum albumin levels at admission may serve as a valuable prognostic indicator for identifying high-risk patients in the burn population.

Evidence for secondary outcomes, such as hospital length of stay and ventilatory requirements, was noted as limited and heterogeneous. While the association between hypoalbuminemia and mortality/AKI is statistically significant, these results represent associations rather than established causation. Clinical application of serum albumin as a prognostic marker should be considered within the context of these limitations.

How this fits prior evidence

This finding addresses a gap in prognostic markers for burn injuries by identifying hypoalbuminemia as a significant risk factor for mortality (OR 9.51) and acute kidney injury (OR 2.83). It complements other markers for sepsis and critical illness, such as higher PNI scores associated with lower short-term mortality and Butyrylcholinesterase activity predicting in-hospital mortality. While this study focuses on burn patients, it adds to the broader clinical understanding of biochemical indicators for mortality and acute kidney injury in critically ill populations.

Researchers analyzed data from nine studies involving patients with burn injuries. They looked specifically at serum albumin, which is a protein in the blood. The study found that patients with low albumin levels at the time of admission had a much higher risk of mortality. This finding suggests that albumin levels could be a useful tool for doctors to predict which patients might face the most serious outcomes.

In addition to mortality, the study found a link between low albumin and an increased risk of acute kidney injury. While the data showed a strong connection between these factors, it is important to note that the study shows an association rather than a direct cause. The researchers also looked at other factors like hospital stay length and infections, but the results for those specific areas were less consistent.

For patients and families, this means that albumin levels are a helpful marker for doctors to monitor during early treatment. Because the evidence for some secondary outcomes was limited, the main takeaway is that low albumin is a significant indicator for mortality and kidney issues in burn cases.

What this means for you:
Low serum albumin at admission is linked to higher mortality and kidney injury risk in patients with burn injuries.

Common questions

What is the link between albumin and burn injuries?

The study found that patients with low serum albumin levels at the time of admission had a significantly higher risk of mortality. This suggests that albumin levels can serve as a useful marker for doctors to identify patients who may face more severe outcomes after a burn injury.

Does low albumin cause kidney damage in burn patients?

The study showed that admission hypoalbuminemia was associated with an increased risk of acute kidney injury. While the study shows a link between low albumin and kidney issues, it does not prove that low albumin directly causes the injury. You should speak with a doctor about specific clinical risks.

Is albumin a reliable way to predict patient outcomes?

Serum albumin appears to be a valuable prognostic marker for patients with burn injuries. It is specifically linked to higher mortality and a higher risk of acute kidney injury. Other factors like hospital stay length and infection rates had less consistent data in this study.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedSep 2026
View Original Abstract ↓
Albumin is essential for maintaining oncotic pressure and vascular integrity. In burn injuries, increased capillary permeability leads to hypoalbuminemia, which is a recognized marker of poor outcomes in critical illness. However, its prognostic value in acute burn care remains underexplored. This study evaluated the prognostic value of admission serum albumin in predicting mortality, acute kidney injury (AKI), hospital and intensive care unit length of stay, ventilatory requirements, sepsis, and pulmonary infection in patients with burn injuries. A systematic search of PubMed, Scopus, Cochrane Library, Web of Science, MEDLINE, and Embase was conducted. Of 5587 studies screened, 19 were included in the systematic review and 9 in the meta-analysis. Statistical analysis was performed using RStudio, with pooled outcomes reported as odds ratios (ORs), standardized mean differences, and hierarchical summary receiver operating characteristic curves. Heterogeneity was assessed using Cochran's Q, I2, and tau2. Hypoalbuminemia on admission was significantly associated with increased mortality during admission (OR 9.51; 95% CI, 3.04-29.78; I2 49.3%). Admission hypoalbuminemia was also associated with an increased risk of AKI (OR 2.83; 95% CI, 2.49-3.22; I2 0%). Evidence for other outcomes was limited and heterogeneous. Admission serum albumin appears to be a valuable prognostic marker in patients with burn injuries, particularly for mortality and AKI. Further research is required to support its integration into burn-specific risk models, characterize albumin trends within the first 24 h postinjury, and establish optimal cut-off values.
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