Comparison of preoperative ultrasonography findings between the electrocautery and ultrasonic dissection groups
| Finding | Group; no. | p value | |
|---|---|---|---|
| Electrocautery, n = 30 | Ultrasonic, n = 30 | ||
| Distended gallbladder | 19 | 19 | > 0.99 |
| Gallbladder wall thickness > 3 mm | 7 | 2 | 0.07 |
| Pericholecystic lucency | 2 | 2 | > 0.99 |
| Single calculus | 8 | 6 | 0.54 |
| Multiple calculi | 13 | 18 | 0.20 |
| Sludge | 9 | 6 | 0.37 |
| Stone size > 1 cm | 3 | 3 | > 0.99 |
| Common bile duct diameter > 6 mm | 4 | 6 | 0.49 |