Related Experiment Videos
A triage system for stab wounds to the chest
P J Wormald1, J D Knottenbelt, A G Linegar
1Trauma Unit, Groote Schuur Hospital, Cape Town.
South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde
|September 2, 1989
Summary
Clinical examination effectively triages patients with chest wounds, identifying those needing further imaging. This approach demonstrates high sensitivity and positive predictive value, reducing unnecessary referrals.
Area of Science:
- Emergency Medicine
- Trauma Surgery
- Diagnostic Accuracy
Background:
- Chest wounds present a diagnostic challenge, particularly when radiographic referral is not immediately indicated.
- Accurate triage is crucial to ensure timely and appropriate patient management.
Purpose of the Study:
- To evaluate the diagnostic accuracy of clinical examination as a triage tool for patients with chest wounds.
- To determine the reliability of clinical signs in identifying patients requiring radiographic assessment.
Main Methods:
- A study involving 200 patients with chest wounds was conducted.
- Clinical examination included assessment of pulse, blood pressure, respiratory rate, hemoglobin levels, and chest auscultation.
- Diagnostic performance metrics (sensitivity, false-positive rate, false-negative rate, positive predictive value) were calculated.
Main Results:
- Clinical examination demonstrated a sensitivity of 99.2% for detecting the need for referral when one or more positive signs were present.
- The false-negative rate was 2%, indicating a low risk of missing patients requiring further investigation.
- A positive predictive value of 99.1% was observed for two or more positive clinical signs, confirming high reliability.
Conclusions:
- Careful clinical examination is a reliable and accurate triage tool for patients with chest wounds.
- This method can effectively guide decisions regarding the need for radiographic facilities, optimizing resource allocation.