|
Age (years)a
|
58.3 ± 10.3
|
59 ± 9.5
|
|
Gender (male/female ratio)a
|
0.56 ± 0.4
|
0.6 ± 0.4
|
|
Side of catheterisation (left/right)
|
222/228
|
218/232
|
|
Body mass index (kg/m2)a
|
24.1 ± 5.3
|
23.7 ± 5.9
|
|
Prior catheterisation
|
85 (18.8%)
|
76 (16.8%)
|
|
Limited sites for access attempts
|
51 (11.3%)
|
55 (12.2%)
|
|
Previous difficulties during catheterisation
|
44 (9.7%)
|
40 (8.8%)
|
|
Previous mechanical complication
|
18 (4%)
|
20 (4.4%)
|
|
Known vascular abnormality
|
4 (0.8%)
|
3 (0.6%)
|
|
Untreated coagulopathy
|
25 (5.5%)
|
24 (5.3%)
|
|
Skeletal deformity
|
15 (3.3%)
|
13 (2.8%)
|
|
Cannulation during cardiac arrest
|
31 (6.8%)
|
35 (7.7%)
|
