Related Experiment Videos
A new vascular access procedure for immediate as well as chronic hemodialysis
Insights
This study introduces a novel vascular access procedure combining a shunt and fistula for hemodialysis patients. While initial results show promise, careful patient selection is crucial for long-term success and reduced complications.
Area of Science:
- Vascular Surgery
- Nephrology
- Dialysis Access
Background:
- Patients requiring immediate and long-term hemodialysis often face challenges with traditional vascular access.
- The Brescia-Cimino fistula, a common option, is not suitable for all patients.
Purpose of the Study:
- To evaluate a new vascular access procedure combining an arteriovenous shunt with a subcutaneous arteriovenous fistula.
- To assess the patency and complication rates of this novel approach.
- To determine its suitability for patients ineligible for Brescia-Cimino fistulas.
Main Methods:
- A novel vascular access procedure was performed on six patients.
- The procedure involved attaching an arteriovenous shunt to a subcutaneous arteriovenous fistula.
- Patients were observed for two to five months post-procedure.
Main Results:
- Five out of six shunts remained patent for at least two weeks.
- Five fistulas were functioning at the end of the observation period.
- Three patients had both patent shunts and fistulas; however, complications like shunt declotting and removal due to infection or non-revision occurred.
Conclusions:
- The combined shunt-fistula vascular access shows potential for hemodialysis patients.
- Clotting complications may be linked to patient selection, particularly those with a history of vascular access issues.
- Further research with careful patient selection is needed to confirm prolonged patency and reduced complications.
Abstract:
A new vascular access procedure consists of attaching an arteriovenous shunt to a subcutaneous arteriovenous fistula. The procedure was designed for patients who need immediate as well as long term hemodialysis and in whom the Brescia-Cimino type of fistula could not be done. Secondary objectives for this new procedure were a prolonged patency interval and a lower complication rate of arteriovenous fistulas. Six patients underwent this procedure and were observed from two to five months. Five shunts remained patent for a minimum of two weeks. Five patients have presently functioning fistulas, and in three of these, both shunts and fistulas remain patent. Two of the presently functioning shunts required declotting. Two shunts were removed when neither declotting nor revision was possible, and one shunt was removed because of infection. One fistula was lost due to a technical error, and two of the five presently functioning fistulas have required declotting. We believe clotting was due chiefly to the fact that patients selected for this procedure were from the group who had multiple previous clotting episodes and vascular access procedures. It remains to be seen whether or not more careful patient selection will accomplish the secondary objectives.