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Table 2 Classification characteristics of post-ectopic changes in variables

From: Extrasystoles for fluid responsiveness prediction in critically ill patients

  Prediction at 10% SV change threshold Prediction at 15% SV change threshold
Variable ROC curve area Spec (%) Sens (%) Threshold ROC curve area Spec (%) Sens (%) Threshold
SBPabs 0.78 [0.54; 1] 90 67 5.5 mmHg 0.66 [0.33; 0.99] 82 50 5.5 mmHg
PEPabs 0.74 [0.53; 0.95] 78 67 7.5 ms 0.73 [0.47; 1] 75 75 7.5 ms
PPabs 0.77 [0.52; 1] 78 83 8.46 mmHg 0.73 [0.36; 1] 75 75 8.46 mmHg
dP/dtabs 0.76 [0.53; 0.99] 85 67 0.195 mmHg/s2 0.64 [0.33; 0.94] 32 100 0.030 mmHg/s2
SBPrel 0.79 [0.52; 1] 100 67 5% 0.66 [0.27; 1] 95 50 5.5%
PEPrel 0.70 [0.50; 0.90] 65 83 2.5% 0.69 [0.44; 0.95] 68 75 3%
PPrel 0.70 [0.48; 0.93] 67 83 15% 0.71 [0.41; 1] 80 75 15%
dP/dtrel 0.68 [0.39; 98] 70 83 14% 0.68 [0.39; 0.98] 64 75 14%
  1. SBP systolic blood pressure, PEP pre-ejection period, PP pulse pressure, dP/dt maximal systolic upstroke, SV stroke volume, ROC receiver operating characteristic, Spec specificity, Sens sensitivity, rel post-ectopic change calculated on relative scale, abs post-ectopic change calculated on absolute scale