Table 2:
Univariate predictors of large postoperative infarcts
| Variable | Odds Ratio | 95% CI | P Value |
|---|---|---|---|
| Presence of an infarct on preoperative MRI | 9.8 | 2.2–44.2 | .003 |
| Anterior location of preoperative infarct | 2.0 | 1.2–3.4 | .01 |
| Post-ACZ CBF augmentation (continuous, per mL/100 g/min) | 0.97 | 0.96–0.98 | <.001 |
| Absolute CBF augmentation anterior circulation (10% change)a | 0.88 | 0.82–0.96 | .002 |
| Impaired CVR (augmentation of <10%) | 2.8 | 1.8–4.3 | <.001 |
| Steal phenomenon (augmentation <0%) | 2.4 | 1.3–4.5 | .005 |
a
The reported odds ratio is the effect of a 10 mL/100 g/min increase in absolute CBF change, a 10% increase in percentage difference for CBF change. For example, for absolute CBF change in the anterior circulation, for every increase of 10 mL/100 g/min (ie, better augmentation), there is a 12% decrease in the odds (ie, 0.88) that the patient will be in the index (ischemic complications) group.