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Predictive utility of clinical and stool parameters in bacterial diarrhoea in children
1Department of Pediatrics, Christian Medical College Ludhiana, Punjab.
Insights
Predicting bacterial diarrhea in hospitalized children is challenging. Absence of clinical symptoms and specific stool findings, like mucus or pus cells, are more reliable indicators for ruling out bacterial infection than their presence.
Area of Science:
- Pediatrics
- Infectious Diseases
- Clinical Diagnostics
Background:
- Bacterial diarrhea is a common cause of hospitalization in children.
- Accurate and timely diagnosis is crucial for effective treatment and preventing complications.
- Predictive value of clinical signs and stool analysis for bacterial diarrhea requires further investigation.
Purpose of the Study:
- To evaluate the diagnostic utility of clinical and stool parameters in identifying bacterial diarrhea in hospitalized children.
- To determine the predictive values (positive and negative) of specific indicators.
Main Methods:
- Prospective study over one year involving 204 children (1 month to 5 years) admitted to a pediatric ward.
- Clinical data collection including fever, abdominal distension, vomiting, and oliguria.
- Stool sample analysis for consistency, presence of mucus, pus cells (HPF), and blood; correlated with stool culture results.
Main Results:
- Fever occurred in 40% of both culture-positive and negative cases.
- Clinical features like abdominal distension, vomiting, and oliguria had low positive predictive values but high negative predictive values.
- Watery stool consistency and >5 pus cells/HPF were more frequent in culture-positive cases. Mucus and >5 pus cells/HPF showed high sensitivity but low specificity, while blood showed the opposite.
Conclusions:
- Clinical and stool parameters are more valuable in excluding bacterial diarrhea (high negative predictive values) than in confirming it (low positive predictive values).
- The absence of specific clinical signs and stool abnormalities is a stronger indicator against bacterial infection.
- Further research may refine diagnostic algorithms for pediatric bacterial diarrhea.
Abstract:
A prospective one year study was conducted on children between the ages of 1 month to 5 years hospitalised in the pediatric ward of Christian Medical College, Ludhiana, with the aim of determining the predictive utility of certain clinical and stool parameters in diagnosing bacterial diarrhoea. Among the 204 children enrolled in the study, fever was observed in 40% in both the culture positive and negative groups. Clinical features such as abdominal distension, vomiting and oliguria although had low positive predictive values, their negative predictive values were high. Among the stool parameters, watery consistency and pus cells > 5 HPF were significantly more often observed in culture positive cases. The presence of mucus and pus cells > 5 HPF had good sensitivity (70-80%) but poor specificity (27-40%), while the reverse was true of blood (sensitivity 23%, specificity 89%). Again the positive predictive values were uniformly low while the negative ones were high. In conclusion the clinical and stool parameters were found to be more useful by their absence than by their presence in excluding a positive stool culture.