Venous thrombosis related to peripherally inserted central catheters

PURPOSE: To determine factors that may lead to venous thrombosis in patient s with peripherally inserted central catheters (PICC), MATERIALS AND METHODS: The medical records of 678 patients with 813 PICCs d uring 1997 were cross-referenced with all patients receiving venous duplex examinations (1,631) during the same time period. Multiple factors were exa mined in the patients with catheter-related thrombosis, including diagnosis , solution infused, catheter tip position, vein accessed, and catheter diam eter. RESULTS: Nurses placed 269 PICCs with 12 venous thromboses, for a rate of 4 .5%. Radiologists placed 544 PICCs with 20 venous thromboses, for a rate of 3.7%. There was no significant difference in these rates. The overall thro mbosis rate was 3.9%. After multivariate analysis, only catheter diameter r emained significant. There were no thromboses in catheters 3 F or smaller. The thrombosis rate was 1% for 4-F catheters, 6.6% for 5-F catheters, and 9 .8% for 6-F catheters, CONCLUSIONS: Thrombosis rate associated with PICCs was low (3.9%). The smal lest acceptable catheter diameter should be used to decrease the incidence of venous thrombosis.