Effect of Cholecystokinin on Gallbladder Emptying in 49 Patients Who Had Received an Opioid
| Characteristic | No. of patients |
|---|---|
| Low gallbladder ejection fraction | 37 |
| Normal gallbladder ejection fraction | 12 |
| No paradoxical filling | 42 |
| Paradoxical filling | 7 |
| Filling < 20% | 6 |
| Filling > 20% | 1 |