Table 4 Sensitivity, specificity, positive and negative predictive values for the pressure variations with different respiratory interventions
Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | |
|---|---|---|---|---|
Systolic pressure variation | ||||
No resistor | 63 | 94 | 83 | 83 |
Inspiratory resistor | 88 | 88 | 78 | 93 |
Expiratory resistor | 100 | 100 | 100 | 100 |
Inspiratory/expiratory resistor | 75 | 94 | 86 | 88 |
Pulse pressure variation | ||||
No resistor | 88 | 69 | 58 | 92 |
Inspiratory resistor | 88 | 69 | 58 | 92 |
Expiratory resistor | 100 | 81 | 73 | 100 |
Inspiratory/expiratory resistor | 88 | 94 | 88 | 94 |