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Table 2 Incidence of hypotension and requirement for rescue i.v. ephedrine, with dose and time to first administration. Requirement of rescue i.v. ephedrine, with dose and time to first administration are expressed as mean (SD). Incidence of hypotension is expressed as number (%). n=27 in each group. *P=0.02 for P4 and E45 compared with controls. **P=0.03 for P4 compared with controls. P4=phenylephrine 4 mg; P2=phenylephrine 2 mg; E45=ephedrine 45 mg
|
P4 group |
P2 group |
E45 group |
Control |
|
| Incidence of ephedrine requirement |
21 (77%) |
22 (81%) |
21 (77%) |
23 (85%) |
| Dose of rescue i.v. ephedrine (mg) |
15.7 (15.7)* |
17.9 (15) |
15.8 (15.6)* |
28.8 (20.6) |
| Incidence of hypotension |
9 (33%)** |
18 (70%) |
13 (48%) |
18 (70%) |
| Time to first ephedrine (min) |
8.7 (7.6) |
6.3 (4.7) |
6.4 (6.1) |
7.5 (4.8) |
| |
