After being informed about the study and potential risks, all participants giving written informed consent will complete port specific histories, assessments and questionnaires within 14 days prior to registration. Eligible, consented participants will be registered to the study and randomized to receive either IPD standard maintenance flushes and port assessments every 4 weeks or every 12 weeks for an initial 12 week interval. If study participants agree to the continuation portion of the study, they will continue to receive either IPD standard maintenance flushes and port assessments every 4 weeks or every 12 weeks for up to an additional three 12 week cycles.
