Ingo Gräff1, Benjamin Latzel1, Procula Glien1, Rolf Fimmers2, Ramona C Dolscheid-Pommerich3. 1. Emergency Department, University Hospital Bonn, Bonn, Germany. 2. Institute for Medical Biometry, Informatics and Epidemiology, University Hospital Bonn, Bonn, Germany. 3. Department of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, Bonn, Germany.
Abstract
RATIONALE, AIMS, AND OBJECTIVES: The spectrum of cases seen by emergency departments ranges from minor illnesses or injuries to complex diseases with high mortality. Some patients require life-saving interventions (LSIs) or therapeutic treatment for an acute illness to prevent an expected imminent life-threatening condition immediately upon arrival. No published study has evaluated the validity of the Manchester Triage System (MTS) in the context of immediate LSI or acute emergency treatment (AET). METHODS: The definition of LSI was based on a literature search. AET was defined by an expert panel based on current emergency guidelines and diagnostic guideline recommendations. In a 4-month observation period, an independent external observer documented all executed LSIs or AETs using a checklist. Sensitivity, negative predictive value, likelihood ratio negative (LR-), and accuracy of MTS triage level for the identification of patients receiving an LSI or AET were calculated. RESULTS: In 1762 patients, 40 (2.3%) LSIs and 89 (5.1%) AETs were observed. In the LSI group, sensitivity of MTS was 75.0%, negative predictive value (NPV) was 99.2% (95% CI: 98.7%-99.6%), LR- was 0.303 (95% CI: 0.189-0.487) and accuracy (ACC) was 98.5% (95% CI: 97.8%-98.9%). In the AET group, sensitivity was 82.0%, NPV was 98.9% (95% CI: 98.1%-99.3%), LR- was 0.206 (95% CI: 0.132-0.322), and ACC was 86.5% (95% CI: 84.9%-88.1%). CONCLUSION: The MTS is a valid instrument for a first assessment of emergency patients in critical condition upon arrival.
RATIONALE, AIMS, AND OBJECTIVES: The spectrum of cases seen by emergency departments ranges from minor illnesses or injuries to complex diseases with high mortality. Some patients require life-saving interventions (LSIs) or therapeutic treatment for an acute illness to prevent an expected imminent life-threatening condition immediately upon arrival. No published study has evaluated the validity of the Manchester Triage System (MTS) in the context of immediate LSI or acute emergency treatment (AET). METHODS: The definition of LSI was based on a literature search. AET was defined by an expert panel based on current emergency guidelines and diagnostic guideline recommendations. In a 4-month observation period, an independent external observer documented all executed LSIs or AETs using a checklist. Sensitivity, negative predictive value, likelihood ratio negative (LR-), and accuracy of MTS triage level for the identification of patients receiving an LSI or AET were calculated. RESULTS: In 1762 patients, 40 (2.3%) LSIs and 89 (5.1%) AETs were observed. In the LSI group, sensitivity of MTS was 75.0%, negative predictive value (NPV) was 99.2% (95% CI: 98.7%-99.6%), LR- was 0.303 (95% CI: 0.189-0.487) and accuracy (ACC) was 98.5% (95% CI: 97.8%-98.9%). In the AET group, sensitivity was 82.0%, NPV was 98.9% (95% CI: 98.1%-99.3%), LR- was 0.206 (95% CI: 0.132-0.322), and ACC was 86.5% (95% CI: 84.9%-88.1%). CONCLUSION: The MTS is a valid instrument for a first assessment of emergency patients in critical condition upon arrival.