Optimized Native Arteriovenous Fistulae for Chronic Hemodialysis
Keywords:
Native arteriovenous fistulae, hemodialysis, duplex imagingAbstract
Background and Objective: The arteriovenous fistulae (AVF) is the preferred vascular access for hemodialysis interms of superior primary patency, longer access survival and decrease morbidity and mortality compared with AV grafts.
Recent clinical practice guideline (NKF/DOQI) advocates increase native AVF to achieve 65%. This study was attempted
to create native arteriovenous fistulae with simple preoperative assessment and criteria for both new hemodialysis and
previous permanent access patients.
Objective: The purpose of this study was to delineate preoperative assessment and operative procedure for
native arteriovenous fistulae to meet primary patency and sufficiency for hemodialysis.
Material and methods: Prospective study design was carried out at Lampang Regional Hospital between April
2005 and Nov 2010 by one surgeon. Preoperative assessments comprised of physical examination and duplex imaging
study of vein and artery of non-dominant upper extremity first. The criteria are wrist vein diameter > 2.5 mm, arterial
diameter > 2.0 mm with no inflow and outflow stenosis. The creation of arteriovenous fistulae was regarded on the results
of physical examination and preoperative duplex imaging. If the arteriovenous fistulae failed to mature, remedial
imaging before re-intervention was performed.
Result: One hundred seventy-five patients with total 209 procedures were included in this study. Majority of the
new hemodialysis cases had prior catheter placement for chronic hemodialysis. Total new hemodialysis, 149 patients,
had first visit at Lampang Regional Hospital. One hundred forty-seven native AVF creation (98.6%) were performed with
radiocephalic (77.8%), brachiocephalic (16.7%), forearmbasilic transposition (0.0067%), arm basilic transposition
(0.0067%) and basilic superficialization (0.0268%). New hemodialysis patients had unsuitable criteria of duplex imaging
for eight cases, only two cases were decided to operate with loop forearm AVBG. Twenty-six patients had at least one
arteriovenous fistulae procedure from other hospital and had remedial procedure for 21 native AVF creation (80.7%)
and 5 prosthetic graft (19.2%). One hundred forty-one native AVF matured after first creation, 22 patients needed
remedial procedure, 3 patients needed 2 times of remedial procedure and 2 patients needed 3 times. All of these AVF
patients had no mortality and limited number of complication such as thrombosis, bleeding and postoperative edema.
Conclusion: On the basis of native AVF creation first, with simple preoperative assessment. Optimized native
AVF can reach over DOQI recommendation.
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