2015
DOI: 10.1016/j.ijnurstu.2014.12.002
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The catheter to vein ratio and rates of symptomatic venous thromboembolism in patients with a peripherally inserted central catheter (PICC): A prospective cohort study

Abstract: It was found that a 45% catheter to vein ratio was the optimal cut off with high sensitivity and specificity to reduce the risk of VTE. However, further research is needed to confirm these results as although adequately powered; the number of cases of VTE was comparatively small, resulting in wide confidence intervals.

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Cited by 143 publications
(98 citation statements)
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“…In consequence, the classic rule stating that 'the size of catheter in French should not exceed the size of the vein in mm' [47] appears to be reasonably valid in pediatric patients. Recently, Sharp et al also reported an association between catheter/vein ratio and symptomatic PICC-related venous thromboembolism in adults, 0.45 being the optimal cut-off point [48]. According to Poiseuille's law, the higher the catheter/vein ratio the more stasis in venous flow, and, according to Virchow's triad, the higher the risk of thrombosis [41,49].…”
Section: Discussionmentioning
confidence: 99%
“…In consequence, the classic rule stating that 'the size of catheter in French should not exceed the size of the vein in mm' [47] appears to be reasonably valid in pediatric patients. Recently, Sharp et al also reported an association between catheter/vein ratio and symptomatic PICC-related venous thromboembolism in adults, 0.45 being the optimal cut-off point [48]. According to Poiseuille's law, the higher the catheter/vein ratio the more stasis in venous flow, and, according to Virchow's triad, the higher the risk of thrombosis [41,49].…”
Section: Discussionmentioning
confidence: 99%
“…Vessels in the hand are located the most distal to the arm, and lumens of the blood vessels of the hand are smaller in diameter and walls of them are also thinner than those in forearms. On the other hand, antecubital fossa veins allow an easier access, larger needles for blood sampling, a reduced chance of vessel collapse (Heyer et al, ) and a better catheter‐to‐vein ratio of 45% or less to prevent venous thrombosis (Sharp et al, ). That is the reason that antecubital fossa is the most site for venipuncture as well (Yamada, Yamada, Katsuda, & Hida, ).…”
Section: Discussionmentioning
confidence: 99%
“…On the other hand, antecubital fossa veins allow an easier access, larger needles for blood sampling, a reduced chance of vessel collapse (Heyer et al, 2012) and a better catheter-to-vein ratio of 45% or less to prevent venous thrombosis (Sharp et al, 2015). That is the reason that antecubital fossa is the most site for venipuncture as well (Yamada, Yamada, Katsuda, & Hida, 2008).…”
Section: Discussionmentioning
confidence: 99%
“…Peripherally inserted central catheter complications are more likely when the ratio of catheter diameter to vein diameter increases . The use of a jugular vein spares peripheral veins that may be crucial for future fistulas.…”
Section: Discussionmentioning
confidence: 99%