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Heart 91:1215-1216 doi:10.1136/hrt.2004.039644
  • Scientific letters

The value of haemostatic markers in the triage of patients with chest pain presenting with a normal or non-diagnostic ECG

Table 1

 Utility of haemostatic markers to identify patients with an acute coronary syndrome (ACS) or specifically evolving a cTnT positive ACS

Haemostatic marker cut off Area under the ROC curve Sensitivity (%) Specificity (%) PPV (%) NPV (%)
Data presented with 95% confidence intervals.
cTnT; cardiac troponin T; F1+2, prothrombin fragment 1+2; NPV, negative predictive value; PAI, plasminogen activator inhibitor; PPV, positive predictive value; ROC, receiver operating characteristic; TAT, thrombin-antithrombin; TFPI, tissue factor pathway inhibitor.
Detecting ACS at large
    F1+2 >1.1 nmol/l 0.53 (0.44 to 0.63) 31 (22 to 40) 80 (70 to 90) 71 (57 to 85) 42 (33 to 51)
    TAT complexes >6.0 ng/ml 0.52 (0.42 to 0.61) 27 (18 to 36) 80 (70 to 90) 68 (53 to 83) 40 (31 to 49)
    TFPI activity >1400 U/l 0.57 (0.48 to 0.66) 29 (20 to 38) 79 (69 to 89) 68 (54 to 82) 40 (33 to 51)
    PAI >110 ng/ml 0.61 (0.52 to 0.70) 28 (19 to 37) 85 (76 to 94) 75 (61 to 89) 43 (34 to 52)
Detecting cTnT positive ACS (case group 2)
    F1+2 >1.1 nmol/l 0.62 (0.53 to 0.71) 40 (28 to 52) 83 (75 to 91) 62 (47 to 77) 66 (57 to 75)
    TAT complexes >6.0 ng/ml 0.59 (0.50 to 0.68) 29 (18 to 40) 79 (71 to 87) 50 (34 to 66) 61 (52 to 70)
    TFPI activity >1400 U/l 0.55 (0.46 to 0.64) 28 (17 to 39) 76 (67 to 85) 44 (29 to 59) 60 (51 to 69)
    PAI >95 ng/ml 0.54 (0.45 to 0.63) 29 (18 to 40) 76 (67 to 85) 45 (30 to 60) 61 (52 to 70

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