Predictive value of stool examination in acute diarrhea

Area of Science:

• Gastroenterology
• Infectious Diseases
• Clinical Diagnostics

Background:

• Acute diarrhea is a common outpatient complaint.
• Identifying bacterial pathogens is crucial for appropriate treatment.
• Predictive markers for bacterial gastroenteritis are needed.

Purpose of the Study:

• To evaluate the diagnostic value of fecal blood and fecal leukocytes in predicting bacterial gastroenteritis.
• To determine the effectiveness of these markers in an adult outpatient setting.

Main Methods:

• Prospective study of 113 adult patients with acute diarrhea.
• Stool cultures performed for enteric pathogens.
• Analysis of fecal blood and fecal leukocytes presence.

Main Results:

• 47% of patients had positive stool cultures for bacterial pathogens.
• The combination of fecal leukocytes and fecal blood showed high predictive value (sensitivity 81%, specificity 74%).
• This combination remained the best predictor across different demographic subgroups.

Conclusions:

• Fecal leukocytes and fecal blood are reliable, inexpensive indicators of bacterial diarrhea.
• These markers aid in differentiating bacterial from non-bacterial causes of acute diarrhea in adults.
• The findings support the use of these simple tests in acute care settings.