Table 1.
Measured and calculated densities of hyperbaric LA-A solutions and difference from pure LA and calculated density. *—> 0.0006; #—p < 0.05.
| Measured Density g/mL (±SD) | Pure LA Density—LA-A Measured Density (g/mL) | Calculated Density (p-Value) | Measured Density—Calculated Density | |
|---|---|---|---|---|
| CSF | 1.0003 (0.0003) |
|||
| Fentanyl | 0.99360 (0.00004) |
|||
| Morphine | 0.99993 (0.00003) |
|||
| Bupivacaine (Bupi) | 1.02143 (0.00002) |
|||
| Prilocaine (Prilo) | 1.01867 (0.00009) |
|||
| 7.5 mg Bupi + 25 µg Fentanyl | 1.01513 (0.00053) |
0.00630 * |
1.01447 (0.003) # |
0.00065 |
| 7.5 mg Bupi + 100 µg Morphine | 1.02020 (0.00017) |
0.00123 * |
1.02009 (0.059) |
0.00011 |
| 10 mg Bupi + 10 µg Fentanyl | 1.01899 (0.00004) |
0.00244 * |
1.01890 (0.0001) # |
0.00009 |
| 10 mg Bupi + 100 µg Morphine | 1.02044 (0.00005) |
0.00099 * |
1.02041 (0.065) |
0.00003 |
| 10 mg Bupi + 100 µg Morphine + 10 µg Fentanyl | 1.01830 (0.00023) |
0.00313 * |
1.01808 (0.015) # |
0.00022 |
| 15 mg Bupi + 25 µg Fentanyl | 1.01770 (0.00047) |
0.00373 * |
1.01746 (0.144) |
0.00024 |