Table 3.
Correlation Coefficients Between Intraoperative Hypotension Categories and Case Data
| Variable | Comparison | Correlation coefficient (r) |
|---|---|---|
| Percent time of case in hypotension | MAP <60 vs. SBP >20% | r=0.24, P=0.05 |
| MAP <60 vs. SBP >30% | r=0.22. P=0.07 | |
| SBP >20% vs. SBP >30% | r=0.74, P<0.0001 | |
| Any pressor usage | Minutes MAP <60 | r=0.32, P=0.01 |
| Minutes SBP >20% | r=0.06, P=0.64 | |
| Minutes SBP >30% | r=-0.004, P=0.97 | |
| % time of case, MAP <60 | r=0.30, P=0.01 | |
| % time of case, SBP >20% | r=0.003, P=0.98 | |
| % time of case, SBP >30% | r=0.03, P=0.83 | |
| Estimated blood loss | Minutes MAP <60 | r=0.34, P=0.004 |
| Minutes SBP >20% | r=0.11, P=0.36 | |
| Minutes SBP >30% | r=0.12, P=0.32 | |
| Procedure time | r=0.41, P=0.0004 | |
| Total fluids given during case | Minutes MAP <60 | r=0.09, P=0.44 |
| Minutes SBP >20% | r=0.15, P=0.24 | |
| Minutes SBP >30% | r=0.24, P=0.05 |
MAP: Mean arterial pressure; SBP: Systolic blood pressure