Table 3.
Maximum increases and decreases in hemodynamic variables and mean decrease at 30 minutes after onset of SA
| MD (SD) | LD (SD) | P-value | |
|---|---|---|---|
| CO | |||
| Percent change at 10 minutes | 5.9 (12.1)* | 5.3 (16.1) | NS |
| Percent change at 20 minutes | 10.1 (10.9)* | 12.4 (16.6)* | NS |
| Percent change at 30 minutes | 11.6 (13.6)* | 12.9 (15.2)* | NS |
|
| |||
| SV | |||
| Percent change at 10 minutes | 3.3 (13.3) | 1.5 (18.9) | NS |
| Percent change at 20 minutes | 7.3 (13.8)* | 4.9 (20.4)* | NS |
| Percent change at 30 minutes | 10.7 (16.2)* | 8.0 (18.9)* | NS |
|
| |||
| MAP | |||
| Percent change at 10 minutes | 4.6 (14.3) | 2.3 (11.8) | NS |
| Percent change at 20 minutes | 6.5 (15.4) | 10.4 (15.3)* | NS |
| Percent change at 30 minutes | 8.4 (21.2)* | 9.9 (15.1)* | NS |
|
| |||
| SAP | |||
| Percent change at 10 minutes | 3.9 (15.1) | 0.2(15.6) | NS |
| Percent change at 20 minutes | 7.6 (15.2)* | 7.8 (17.2)* | NS |
| Percent change at 30 minutes | 12.3 (20.4)* | 9.9 (17.8)* | NS |
|
| |||
| DAP | |||
| Percent change at 10 minutes | 0.9 (14.9) | 0.8 (11.8) | NS |
| Percent change at 20 minutes | 1.3 (16.8) | 5.0 (13.6) | NS |
| Percent change at 30 minutes | 4.9 (18.4)* | 5.8 (13.7)* | NS |
|
| |||
| HR | |||
| Percent change at 10 minutes | 2.2 (9.1) | 3.9 (8.8) | NS |
| Percent change at 20 minutes | 1.5 (12.2) | 6.8 (11.8)* | NS |
| Percent change at 30 minutes | 1.0 (16.0) | 3.7 (14.9) | NS |
|
| |||
| SVR | |||
| Percent change at 10 minutes | 7.4 (27.3) | 8.2 (23.15) | NS |
| Percent change at 20 minutes | 7.5 (20.7) | 8.6 (32.4) | NS |
| Percent change at 30 minutes | 5.0 (23.0) | 5.6 (22.9) | NS |
Notes: Data are expressed as mean (SD).
*
P≤0.05 compared to baseline.
Abbreviations: CO, cardiac output; DAP, diastolic arterial pressure; HR, heart rate; LD, low dose; MAP, mean arterial pressure; MD, medium dose; NS, not significant; SAP, systolic arterial pressure; SA, spinal anesthesia; SV, stroke volume; SVR, systemic vascular resistance.