Lactate Level Predicts Mortality in Patients with Upper Gastrointestinal Bleeding

Area of Science:

• Emergency Medicine
• Gastroenterology
• Clinical Biochemistry

Background:

• Upper gastrointestinal (UGI) bleeding is a common emergency department presentation.
• Predicting transfusion needs and patient outcomes is crucial for effective management.
• The Glasgow-Blatchford Bleeding Score (GBS) is a standard prognostic tool.

Purpose of the Study:

• To evaluate venous blood lactate levels as a predictor of transfusion requirements in UGI bleeding.
• To compare the predictive value of lactate levels with the GBS for patient prognosis.
• To assess lactate's utility in predicting mortality in UGI bleeding patients.

Main Methods:

• Prospective study of 139 patients with UGI bleeding in the emergency department.
• Data collected included lactate levels, GBS, clinical presentation, and outcomes.
• Statistical analysis to determine cutoff values and significance.

Main Results:

• Lactate cutoff of 1.58 mmol/L predicted red blood cell transfusion needs (GBS cutoff 9.5).
• Mean lactate levels differed significantly between survivors (2.37 mmol/L) and non-survivors (4.80 mmol/L) (p=0.044).
• Lactate cutoff of 2.32 mmol/L predicted mortality (GBS cutoff 13.5).

Conclusions:

• Venous blood lactate is a potential biomarker for predicting transfusion needs in UGI bleeding.
• Lactate levels can aid in assessing mortality risk in these patients.
• Lactate offers a complementary prognostic indicator to the GBS.