Key result
FDS enables highly sensitive NSTEMI screening without immediate troponin but low specificity risks over-triage.
Why the study?
Does the front door score (FDS) accurately predict NSTEMI in adult patients presenting to the emergency department with chest pain?
Cohort (n=2,251)
Blinded to outcome
Yes
Does the front door score (FDS) accurately predict NSTEMI in adult patients presenting to the emergency department with chest pain?
The Front Door Score is a highly sensitive but poorly specific rapid screening tool for NSTEMI in the emergency department prior to troponin results.
Answers are grounded in this paper and cite their sources.
May aid rapid NSTEMI ED triage without troponin; leaves open over-triage risks needing prospective validation before adoption.
AIMS: To validate the FDS for predicting NSTEMI in Hong Kong EDs, assess score distribution, evaluate its accuracy in triaging NSTEMI cases and identify the optimal cutoff for clinical use. METHODS AND RESULTS: A multicentre retrospective cohort study was conducted in three Hong Kong EDs from August 1 to 31 October 2021. Patients aged ≥ 18 presenting with chest pain or discomfort were retrospectively scored using the FDS variables after excluding angina episodes. Data were abstracted from electronic patient records (EPRs) by trained nurses, blinded to final NSTEMI diagnosis. Angina data were excluded from FDS criteria due to inconsistent triage documentation. Predictive performance was evaluated with receiver operating characteristic (ROC) curve and Hosmer-Lemeshow test.Among 2251 patients analysed, 69 were diagnosed with NSTEMI. The FDS showed good discrimination with an AUC of 0.816 (95% CI: 0.765-0.867, P < 0.001). The optimal cutoff was 1 point, yielding a sensitivity of 99.8% and specificity of 14.5%, indicating NSTEMI detection but considerable over-triage. Significant predictors included age ≥65, ST-segment changes ≥0.5 mm, and recent aspirin use. CONCLUSION: FDS demonstrated good discriminatory ability in this cohort. It is a highly sensitive, rapid ED screening tool for NSTEMI without immediate Troponin results. Its low specificity risks over-triage. FDS is useful for initial screening but requires additional diagnostics to improve specificity.
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Lui et al. (2025) conducted a cohort in NSTEMI (n=2,251). Front door score (FDS) was evaluated on NSTEMI diagnosis (AUC 0.816, 95% CI 0.765-0.867, p=<0.001). The front door score (FDS) predicted NSTEMI with an AUC of 0.816, with a 1-point cutoff yielding 99.8% sensitivity but 14.5% specificity.
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