Table 6.
Fentanyl Responses |
Effects of Antagonists |
|||
---|---|---|---|---|
Parameter | Direction | Duration (min) | NLX | NLXmi |
Frequency | ↑*↓ | 1–5, 6–20 | +++ | 0 |
Tidal Volume | ↓ | 5 | +++ | ++ |
Minute Ventilation | ↓ | 20 | +++ | 0 |
Inspiratory Time | ↑ | 20 | +++ | 0 |
Expiratory Time | ≈0 | n.a. | n.a. | n.a. |
End Inspiratory Pause | ↑ | > 20 | +++ | + |
Peak Inspiratory Flow | ↓ | 20 | +++ | 0 |
Peak Expiratory Flow | ↓ | 4 | +++ | 0 |
NLX, naloxone. NLXmi, naloxone methiodide. +++ to +, complete to partial blockade; 0, no effect; n.a., not applicable.