Pain and Satisfaction Perceptions of Ultrasound-Guided Versus Conventional Peripheral Intravenous Catheterization: A Randomized Controlled Trial

Abstract

Background: While many emergency department (ED) patients need peripheral vascular catheterization, diagnosis and treatment are often delayed by difficult intravenous access (DIVA).

Aims: This study of ED patients with DIVA was designed to evaluate ultrasound (US)-guided peripheral intravenous (IV) catheterization, compare it with conventional catheterization, and analyse patient pain and satisfaction regarding catheterization.

Design: Randomized controlled clinical trial.

Methods: Adult patients treated in the ED who scored >3 on the Adult-Difficult Venous Catheterization scale were randomly assigned to either US-guided or conventional peripheral IV catheterization. Data were collected from April to December 2016. Study variables were catheter insertion success, number of catheterization attempts, time required to perform the procedure, catheter length and calibre, puncture site, complications, and catheter functioning. Pain and patient satisfaction were also analysed for each group and the full sample.

Results: 120 and 138 patients were recruited for the US-guided and conventional peripheral IV catheterization groups, respectively. For the US-guided compared to the conventional procedure, insertion success was greater (91.75% versus 89.9%; p=0.04), the mean (SD) number of attempts was lower (1.29 (0.59) versus 1.81 (1.28); p<0.001), mean (SD) satisfaction was greater (7.59 (2.04) versus 6.69 (2.28); p=0.03), and the mean (SD) required time in minutes was greater (7.89 (7.13) versus 5.1 (3.69); p=0.045). Mean (SD) pain was moderate in both groups (4.6 (2.75) versus 4.33 (2.91) (p=0.32). Logistic regression for the full sample indicated that more attempts and greater pain were both associated with reduced satisfaction, while use of higher-calibre catheters was associated with greater satisfaction.

Conclusion: US-guided compared to conventional peripheral IV catheterization in patients with DIVA was more successful, required fewer attempts, enabled use of longer and higher-calibre catheters, and led to greater patient satisfaction. Patients who underwent US-guided intravenous catheterization reported moderate pain, similar to that reported for the conventional procedure.

Clinical implications: US-guided peripheral intravenous catheterization improves ED patient care, as it requires fewer catheterization attempts. It is especially recommended for patients with DIVA.