The purpose of this study is to compare the difference in thrombosis as a result of internal jugular (IJ) catheters versus peripherally inserted central catheter (PICC) lines. It is hypothesized that there will be a decreased rate of thrombosis in patients as a result of IJ catheters verses PICC lines.

In a cohort of patients from Sept 1, 2010 until December 31, 2011 with chronic kidney disease (CKD) has shown that the incidence of IJ thrombosis after short term catheter access occurred in only 1/26 subjects or 4%. The current study is being done to compare this experience with the incidence of thrombosis from PICC lines. A secondary aim will be to determine if variables such as level of renal function, prior history of thrombosis or atherosclerosis contribute to the risk of thrombosis when PICC lines are placed. This data will provide the first comparison of the incidence of thrombotic complications from short term IJ catheter access versus PICC lines.

Inclusion Criteria:

• subjects who had a PICC line placed at the University of Chicago between September 1, 2010 and December 31, 2011

Exclusion Criteria:

• subjects under the age of 18

Subjects who had a PICC line placed at the University of Chicago by the procedure service between September 1, 2010 and December 31, 2011