Peripheral Intravenous Power Injection of Iodinated Contrast Media through 22G and 20G Cannulas: Can High Flow Rates Be Achieved Safely? A Clinical Feasibility Study

Abstract

Even with highly viscous CM, high flow rates can be applied in vitro in 22, 20, and 18G IVC without risking material damage. In vivo power injection of iodinated CM through 22G and 20G IVC seems to be safely achievable in the majority of patients with flow rates of up to 3 ml/sec and 5 ml/sec. Extravasation rates do not differ significantly between patients with high-flow or low-flow injections.

Use of IV contrast media in radiotherapy planning CT scans: A UK audit

“…There was an apparent wide variation in practice identified in the results. Flow rates varied between 1-4mls/second (although 85% (n=44) use flow rates of 1-3mls/second) for routine IV contrast delivery which was comparable to evidence provided by Schwab et al (2009) (10) who identified flow rates of 2-5ml/second were feasible and found to be safe in delivering IV contrast without an increased risk of extravasation. While patient safety is paramount, enhancement achieved in using IV contrast is also critical in order to justify the risk/benefit ratio, little evidence exists relating to optimal flow rates and the subsequent level of enhancement, suggesting further research is required.…”

Multidetector CT in children: current concepts and dose reduction strategies

“…Therefore, the largest possible IV cannula should be placed, preferably in the antecubital vein [33, 34, 37]. It is advocated to place this cannula in a comfortable environment at the in-patient or out-patient ward and after application of a local anaesthetic gel or ointment (e.g., lidocaine hydrochloride gel, Astra-Zeneca, London, UK).…”

Influence of Contrast Media Viscosity and Temperature on Injection Pressure in Computed Tomographic Angiography

“…3,6 Until now, several studies focused on the optimization of intravascular contrast enhancement and, in particular, on the influence of injection rate, iodine concentration, and IDR, respectively. Schwab et al 15,16 concluded that heating CM (300 mg I/mL) effectively reduces injection pressure, when tested with injection cannulas of different sizes. Schwab et al 15,16 concluded that heating CM (300 mg I/mL) effectively reduces injection pressure, when tested with injection cannulas of different sizes.…”