KMID : 0880420180190030489
|
|
Korean Journal of Radiology 2018 Volume.19 No. 3 p.489 ~ p.497
|
|
Two Small Intravenous Catheters for High-Rate Contrast Medium Injection for Computed Tomography in Patients Lacking Superficial Veins to Accommodate a Large Catheter
|
|
Son Bum-Gu
Kim Min-Jung Park Myeung-Hwa Kim Kyoung-Sook Kim Ji-Yu Kim Se-Young Lee Kyung-Jin Choi Sang-Hyun Kim Ah-Young Park Seong-Ho
|
|
Abstract
|
|
|
Objective: To prospectively investigate the feasibility of using 2 small intravenous catheters for high-rate computed tomography (CT) contrast injection in patients lacking superficial veins capable of accommodating ¡Â 20-gauge catheters.
Materials and Methods: Sixty-eight consecutive eligible adults referred for dynamic liver CT were enrolled; 58 had previously undergone liver CT, including 8 that experienced extravasation. Two 22- or 24-gauge catheters were placed in all patients after 2?5 venipunctures, and 2 mL/kg of contrast agent (370 mg I/mL) was split-administered through both catheters to achieve total flow rate of 4 mL/s. Patients' experience and examination success rate, defined as uneventful scans completed at 4 mL/s or at < 4 mL/s achieving standard image quality in all phases, were analyzed. Quantitative hepatic signal-to-noise and hepatic vascular contrast-to-noise ratios (CNRs) were compared with 30 control examinations scanned at 4 mL/s using an 18-gauge catheter.
Results: One case each of extravasation and severe injection pain caused the examination to be aborted. Success rate was 88.2% (60/68; 54 patients scanned at 4 mL/s, 6 at 3.5?3.9 mL/s). Fifty-five of 58 patients (94.8%) that had past CT regarded the venipuncture as more tolerable than (n = 36) or similar to (n = 19) past experiences; 45 of 58 patients (77.6%) found contrast injection less painful than (n = 35) or similar to (n = 10) past experiences. When compared with control examinations, signal-to-noise ratio was similar in all phases (p ¡Ã 0.502), but the hepatic arterial CNR in arterial phase was slightly inferior (p ¡Â 0.047).
Conclusion: Using 2 small intravenous catheters can effectively achieve high-rate CT contrast injection in patients lacking adequate superficial veins.
|
|
KEYWORD
|
|
Multidetector computed tomography, Contrast media, Adverse effects, Safety, Quality assurance, Health care, Patient satisfaction
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|