Severe hypophosphatemia in sepsis as a mortality predictor

Area of Science:

• Critical Care Medicine
• Clinical Biochemistry
• Internal Medicine

Background:

• Hypophosphatemia is frequently observed in sepsis and linked to disease severity.
• The predictive value of severe hypophosphatemia for sepsis mortality requires further investigation.

Purpose of the Study:

• To evaluate severe hypophosphatemia as an independent predictor of mortality in patients with sepsis.
• To assess the association between low serum inorganic phosphate (Pi) levels and sepsis outcomes.

Main Methods:

• Retrospective analysis of 6,190 septic patients hospitalized between 2001-2002.
• Comparison of mortality rates between 26 patients with severe hypophosphatemia (Pi <1 mg/dl) and 29 patients without (Pi >1 mg/dl).
• Data collection included medical history, physical exams, lab results, and diagnostic imaging.

Main Results:

• Mortality rate was 80.8% in the severe hypophosphatemia group versus 34.5% in the non-severe group (p=0.001).
• Severe hypophosphatemia was associated with an approximately 8-fold increased risk of death (Odds Ratio = 7.98).

Conclusions:

• Severe hypophosphatemia is an independent predictor of mortality in sepsis.
• Monitoring serum inorganic phosphate (Pi) levels may aid in risk stratification for septic patients.