|
Outcome
|
Placebo (n = 45)
|
Alfentanil (n = 45)
|
P value
|
|---|
|
Maximum pain score
|
5.3 (2.5)
|
3.0 (2.5)
|
<0.001
|
|
Pain score
| | | |
|
1 right decubitus
|
1.8 (2.4)
|
0.4 (1.0)
|
<0.001
|
|
2 supine
|
3.4 (2.6)
|
1.4 (2.0)
|
<0.001
|
|
3 left decubitus
|
5.1 (2.5)
|
2.6 (2.2)
|
<0.001
|
|
4 prone
|
3.0 (2.6)
|
1.6 (2.5)
|
0.01
|
|
Volume CO2 insufflation (litre)
|
4.6 (1.4)
|
4.7 (1.2)
|
0.99
|
|
Pressure at end insufflation (mmHg)
|
22 (20–25)
|
22 (19–25)
|
0.81
|
|
Procedural time (minutes)
|
24.4 (4.2)
|
24.8 (4.7)
|
0.64
|
- This table provides mean values with the standard deviation between brackets. Except the pressure at the end of insufflation which is a median value with interquartile range.
- Pain scores 1, 2 and 3 were asked before performing the scan acquisitions. Pain score 4 was asked with the patient in the prone scan position. No pain score was asked during the supine scan position.
