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Abstract Objective To determine the value of ECG score in risk assessment of old patients with acute pulmonary thromboembolism (PTE). Methods Daniel ECG score, the percentage of lung perfusion defect (PLPD)on radionuclide examination, right ventricular diameter and systolic pulmonary artery pressure (SPAP) on echocardiography, and arterial blood gas analysis were obtained in 60 old patients with acute PTE. Receiver operating characteristic curve (ROC) was performed to evaluate accuracy of ECG score in prediction of PLPD >50% and SPAP>50mmHg. Results The ECG score was positively correlated with PLPD and right ventricular diameter, correlated with SPAP by grade and negatively correlated with PaO2. ROC of the ECG score was 0.888 ± 0.054 (95%CI:0.774~0.985, P<0.01) for predicting PLPD>50%and 0.763 ± 0.093 (95%CI:0.581~0.945, P<0.05) for predicting SPAP>50mmHg. With a cutoff value of 9.5, the sensitivity and specificity of the ECG score for predicting PLPD>50%were 76.2%and 84.2%,respectively. Conclusion ECG score is a simple and relatively reliable means of risk assessment of old patients with acute PTE.
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