Important work published this month in chest1 regarding catheter-related thrombosis. It is presumed that the presence of a catheter within the lumen of a vein will decrease flow and potentially create stasis and thrombosis.
Researchers used fluid mechanics to calculate relative flow rates as a function of the ratio of the catheter to vein diameters simulating the size of upper extremity veins and commonly used peripherally inserted central catheters (PICCs).
Results demonstrate that fluid flow is dramatically decreased, PICCs, in particular, may substantially decrease venous flow rates by as much as 93%.
The Effect of Catheter to Vein Ratio on Blood Flow Rates in a Simulated Model of Peripherally Inserted Central Venous Catheters- CHEST July 2011 vol. 140 no. 1 48-53
Researchers used fluid mechanics to calculate relative flow rates as a function of the ratio of the catheter to vein diameters simulating the size of upper extremity veins and commonly used peripherally inserted central catheters (PICCs).
Results demonstrate that fluid flow is dramatically decreased, PICCs, in particular, may substantially decrease venous flow rates by as much as 93%.
The Effect of Catheter to Vein Ratio on Blood Flow Rates in a Simulated Model of Peripherally Inserted Central Venous Catheters- CHEST July 2011 vol. 140 no. 1 48-53
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