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Prediction of pneumonia in a pediatric emergency department

Mark I Neuman1, Michael C Monuteaux, Kevin J Scully

  • 1Division of Emergency Medicine, 300 Longwood Ave, Boston, MA 02115. mark.neuman@childrens.harvard.edu.

Pediatrics
|July 13, 2011
PubMed

Insights

Clinical history and physical exam findings can identify children at low risk for radiographic pneumonia, potentially reducing unnecessary chest X-rays in the emergency department.

Area of Science:

  • Pediatric Emergency Medicine
  • Radiology
  • Clinical Decision Making

Background:

  • Pneumonia is a common diagnosis in children presenting to emergency departments.
  • Chest radiography is frequently used but may lead to overdiagnosis and unnecessary radiation exposure.

Purpose of the Study:

  • To identify historical and physical examination findings associated with radiographic pneumonia in children.
  • To develop a clinical decision rule to guide the use of chest radiography for suspected pediatric pneumonia.

Main Methods:

  • Prospective cohort study of 2574 children under 21 with suspected pneumonia.
  • Multivariate logistic regression and recursive partitioning analysis were used.
  • Pneumonia defined by attending radiologist interpretation of chest radiographs.

Main Results:

  • Radiographic pneumonia was present in 16% of patients.
  • Key predictors included chest pain, focal rales, fever duration, and triage oximetry.
  • Hypoxia (oxygen saturation ≤92%) was the strongest predictor (OR: 3.6).
  • A subgroup with specific negative findings had a low pneumonia rate (7.6% radiographic, 2.9% definite).

Conclusions:

  • Historical and physical examination findings are valuable for risk stratification.
  • These findings can help identify children at low risk for radiographic pneumonia, potentially reducing the need for imaging.
Abstract

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