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Table 6 Multivariable adjusted model: BP variability parameters adjusted to age, surgery category, STS risk score, and intraoperative vasopressor dose

From: Cardiac surgical outcome prediction by blood pressure variability indices Poincaré plot and coefficient of variation: a retrospective study

Outcome: Mortality

Outcome: Renal Failure

Variable

C-statistic AUC (95% CI)

P value

C-statistic AUC (95% CI)

P value

Systolic Blood Pressure CV

Pre-Bypass CV

0.769 (0.723–0.816)

0.109

0.739 (0.694–0.784)

0.177

Post-Bypass CV

0.780 (0.736–0.823)

0.008*

0.745 (0.699–0.792)

0.002*

Mean Arterial Pressure CV

Pre-Bypass CV

0.766 (0.719–0.814)

0.870

0.734 (0.689–0.780)

0.774

Bypass CV

0.766 (0.718–0.814)

0.868

0.734 (0.688–0.780)

0.634

Post-Bypass CV

0.768 (0.721–0.815)

0.246

0.736 (0.690–0.783)

0.270

Systolic Blood Pressure SD1

Pre-Bypass SD1

0.762 (0.719–0.814)

0.993

0.735 (0.689–0.781)

0.553

Post-Bypass SD1

0.767 (0.720–0.814)

0.312

0.734 (0.689–0.780)

0.498

Mean Arterial Pressure SD1

Pre-Bypass SD1

0.766 (0.719–0.814)

0.946

0.731 (0.685–0.778)

0.121

Bypass SD1

0.770 (0.724–0.817)

0.238

0.732 (0.687–0.778)

0.394

Post-Bypass SD1

0.768 (0.720–0.815)

0.231

0.731 (0.684–0.779)

0.168

Systolic Blood Pressure SD2

Pre-Bypass SD2

0.776 (0.732–0.820)

0.016

0.737 (0.692–0.783)

0.169

Post-Bypass SD2

0.789 (0.746–0.832)

< 0.001*

0.741 (0.694–0.788)

0.004*

Mean Arterial Pressure SD2

Pre-Bypass SD2

0.768 (0.722–0.815)

0.094

0.731 (0.685–0.777)

0.405

Bypass SD2

0.765 (0.718–0.813)

0.708

0.730 (0.684–0.777)

0.067

Post-Bypass SD2

0.772 (0.725–0.819)

0.046*

0.731 (0.684–0.778)

0.369

  1. *Statistically significant at a level of significance of P < 0.05, STS Society of Thoracic Surgeons, AUC Area under the receiver operating curve, CI 95% Confidence Interval, CV Coefficient of Variation, SD1 Short term variability, SD2 Long term variability