Uptake Of Epidural Narcotics.
| Drug |
CSF [ ] |
Plasma [ ] |
| Pethidine (50mg) |
|
|
| 10 min |
8mcg/ml |
0.02mcg/ml |
| 20 min |
10 |
0.1 |
| 40 min |
20 |
0.3 |
| Morphine (0.02mg/kg) |
|
|
| 10 min |
3 mcg/ml |
0.03mcg/ml |
| 20 min |
8 |
0.04 |
| 40 min |
10 |
0.05 |
| Fentanyl (80mcg) |
|
|
| 10 min |
|
0.9 nanogm/ml |
| 20 min |
|
0.6 nanogm/ml |