The purpose of this study is to determine the safest and most effective flushing solution for maintaining patency (unobstructed flow) in BioFlo implanted port catheters. The complication rate in patients whose ports are flushed with saline only will be compared to the complication rate in patients whose ports are flushed with a combination of saline and heparinized saline. These complications include partial or complete obstruction, infection of the central line, and/or the onset of heparin induced thrombocytopenia.
