Table 3.
Secondary outcomes
| Variables | Ultrasound-guided method | Landmark method | P value* |
| n, %, median (IQR), n=57† | n, %, median (IQR), n=57‡ | ||
| Peripheral venous access | |||
| Peripheral venous access lifetime (days) | 3 (1–3) | 3 (2–3) | 0.719 |
| Diameter of the catheter in Gauge | |||
| Day 1 | 18 (18–21) | 18 (18–21) | 0.059 |
| Day 2 | 18 (18–21) | 21 (18–21) | |
| Day 3 | 18 (18–21) | 21 (18–21) | |
| Day 4 | 21 (18–21) | 18 (18–18) | |
| All days | 18 (18–21) | 21 (18–21) | |
| Reasons for removal | |||
| Extravasation | 18/53 (34%) | 9/51 (18%) | 0.094 |
| Accidental catheter removal | 2/53 (4%) | 6/51 (12%) | 0.157 |
| Pain | 0/53 (0%) | 0/51 (0%) | --- |
| Bleeding | 0/53 (0%) | 0/51 (0%) | --- |
| Local inflammation | 0/53 (0%) | 0/51 (0%) | --- |
| Expiration date | 33/53 (62%) | 36/51 (71%) | 0.094 |
| Central venous access | |||
| Immediate removal after peripheral venous access placement | 52/56 (93%) | 52/55 (95%) | 1.000 |
| Duration of the central venous access (days) | 7 (3.75–12.25) | 7 (5–11) | |
| Localisation of the catheter | 0.046 | ||
| Femoral | 4/54 (07%) | 13/56 (23%) | |
| Jugular | 48/54 (89%) | 42/56 (75%) | |
| Subclavian | 2/54 (4%) | 1/56 (2%) | |
| Colonisation | 6/51 (12%) | 7/51 (14%) | 1.000 |
*Comparisons between groups were performed using the χ² test or Fisher’s exact test for categorical variables and the Wilcoxon test for quantitative variables.
†One case lost.
‡One patient presented an unexpected clinical deterioration before the first attempt.