Table 3 Performance (sensitivity, specificity, positive predictive value (PV+) and negative predictive value (PV−)) of various entry tests in predicting correct placement of the Veres needle
From: Laparoscopic entry—the experience of a range of gynaecological surgeons
| Sensitivity (%) | Specificity (%) | PV+ (%) | PV− (%) |
|---|---|---|---|---|
Saline injection | 99.2 | 1.4 | 83.6 | 25.0 |
Aspiration | 98.4 | 1.7 | 84.4 | 16.7 |
Hanging drop | 93.6 | 11.8 | 85.4 | 25.0 |
IAP < 10 mmHg | 92.5 | 14.1 | 86.5 | 23.8 |
Falling column | 91.9 | 14.8 | 86.8 | 23.1 |
Double click | 90.6 | 19.7 | 86.7 | 26.8 |