Table 1 Characteristics of dilution per method
Group | Starting concentration | Number of dilutions | Dilution volume |
|---|---|---|---|
Method 1 | 10 mg/ml morphine | 1 | 100 ml NaCl 0.9% |
Method 2 | 10 mg/ml morphine | 2 | 9 ml NaCl 0.9%, twice |
Method 3 | 1 mg/ml morphine | 1 | 9 ml NaCl 0.9% |
Pharmacy | 60 mcg/ml morphine 2.5 mg/ml bupivacaine | 0 | N/A |