Experience with a needleless vascular access device (Hemasite) for hemodialysis

Area of Science:

• Vascular Access
• Nephrology
• Medical Devices

Background:

• Patients undergoing hemodialysis often require vascular access, with internal fistulas being preferred but not always feasible.
• Alternative access methods are crucial for patients lacking suitable veins for direct internal fistula creation.

Purpose of the Study:

• To evaluate the efficacy and safety of needleless implants (Hemasite) for hemodialysis access.
• To assess the patency rates and complication profile of this device in a patient cohort.

Main Methods:

• Prospective evaluation of 35 needleless implants (Hemasite) in 27 patients over 27 months.
• Analysis of cumulative patency rates and major complications, including infection.

Main Results:

• Needleless implants provided immediately available, painless access in patients unsuitable for direct internal fistulas.
• Cumulative patency reached 46% at two years, comparable to polytetrafluoroethylene grafts.
• Infection was the primary complication, leading to graft loss in one-third of cases, with obese females showing higher susceptibility and poorer prognosis.

Conclusions:

• Needleless implants are a viable option for hemodialysis access in select patients.
• Infection risk necessitates careful monitoring, particularly in vulnerable populations.
• Long-term outcomes with a graftless model were unsatisfactory.