![]() ![]() During dynamic testing the mean peak pressures at 7 mL/s was 81.1 PSI (95% CI 73-89.2 PSI). PSI at burst during static testing was 184.2 PSI (95% confidence interval 174.3-194.1 PSI). RESULTS: During static testing, 6/7 CVCs burst at the distal lumen where the glue was applied, the remaining CVC burst proximal to the hub. ![]() ReTweet if useful… Can standard central venous catheters be used for CT contrast injection? #ivteam Pressures were recorded throughout injection. Dynamic pressure testing was done with the remaining catheters, with radio-contrast injected through the unoccluded distal lumen at flow rates of 4.5 mL/s, then 7 mL/s. The CVC was then placed into a 10-cm deep water bath at 37☌ to simulate in vivo conditions and water was injected until catheter rupture. Half the CVCs (n = 7) were subjected to static testing, where the distal lumen was occluded with the guidewire and super glue at the distal end of the catheter. METHODS: We gathered 16-cm long triple-lumen CVCs (n = 14) from patients with an average dwell time of 5.2 days (☒.7 days). The CVC might rupture at high flow rates, resulting in CVC fragmentation and embolization or contrast extravasation.The objective of this study is to determine the pressure required to burst a CVC under static load and compare this to the pressure generated by injection of contrast at high flow rates (dynamic load) through the distal (16-g) lumen of a triple-lumen CVC. ![]() Patients undergoing computed tomographic angiography require injection of contrast at high flow rates (4.5 mL/s), often CVC access is not used due to safety concerns. INTRODUCTION: Central venous catheter (CVC) access is commonplace in intensive care units. This suggests 16-cm triple-lumen CVCs can be used safely” Beckingham et al (2017). The incidence of central venous catheter-related sepsis appears identical for single- and triple-lumen catheters.No CVCs failed under dynamic loading with injection of contrast at flow rates (4.5 and 7 mL/s) high enough to support computed tomographic angiography. ![]() In intensive care units, the use of triple-lumen catheters is associated with a dramatic decrease in the need for peripheral vascular access. Catheter-related sepsis rates, defined either by clinical signs and positive qualitative tip cultures (8.9% versus 11.5%) or by quantitative tip cultures (16.2% versus 11.5%), were identical in the single-lumen and triple-lumen groups (type II error: 8%). Twenty-five of 68 patients from the single-lumen group and 1 of 61 patients from the triple-lumen group needed peripheral vascular access (p less than 0.001). Catheters were removed according to preestablished defined reasons: suspicion of catheter-related sepsis, uselessness of central venous access, duration of catheterization of more than 21 days, discharge from the intensive care unit, or death.ĭata on 129 central venous catheters were collected from 91 consecutive patients. Complementary peripheral vascular access was allowed in both groups. A prospective randomized study was conducted over a 23-month period in an adult medical-surgical intensive care unit to determine whether triple-lumen catheters reduce the need for peripheral vascular access and whether they are associated with a higher rate of infection than single-lumen catheters.Īfter the insertion route, internal jugular or subclavian, was selected by the physician, patients were randomized either to single-lumen or triple-lumen catheter groups. ![]()
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