Brachiocephalic jump graft fistula: an alternative for dialysis use of elbow crease veins.

Elbow crease fistula can be an alternative for autologous vascular access. Either brachiocephalic or brachiobasilic fistulas could be chosen according to the venous anatomy at the elbow crease. When a median antecubital vein is not present, the cephalic vein is usually too far away from the brachial artery. Thus, a end-to-side fistula must usually be performed after an extensive dissection of the distal part of the vein. In this way, only the proximal cephalic vein can be used for dialysis. To overcome this drawback, a brachiocephalic jump graft fistula was designed. A short segment of polytetrafluoroethylene graft, 6 mm in diameter, is tunneled under the skin and anastomosed to the artery and vein through two short longitudinal skin incisions. From 1981 to 1995, 222 brachiocephalic graft jump fistulas were constructed. The mean age of the patients was 56.1 years, 20% had diabetic nephropathy, and 61.7% had a previously failed angioaccess. Follow-up was obtained in 92.4% of the patients, and overall follow-up was 6,665 fistula-months. Early failure was observed in 4% of the cases. The complication rate was two episodes per 100 fistula-months of follow-up. Primary patency rates (event-free patency) were 85%, 67%, 48%, and 34% at 1, 3, 5, and 7 years. Secondary patency rates (overall patency) were 85%, 72%, 56%, and 43% at 1,3, 5, and 7 years. There were no differences between primary and secondary curves. Brachiocephalic graft jump fistula is a reliable technical variation of elbow crease fistulas for dialysis and can be another alternative to graft access when the cephalic vein is dominant at the elbow crease.

Congenital cystic dilatation of the intrahepatic bile ducts (Caroli's disease): report of a case and review of the literature.

A case of congenital cystic dilatation of the intrahepatic bile ducts (Caroli's disease) followed for more than 7 years is reported. This patient presented also with congenital hepatic fibrosis, gallstones, and biliary hypersecretion of more than 3,000 ml in 24 hours. An analysis of the literature relating to Caroli's disease disclosed 46 well-documented cases of both hepatic histopathology and biliary tree studies. Six cases (13%) were found to be isolated forms of intrahepatic cystic dilatations; 16 (34.7%) were associated with congenital hepatic fibrosis; 10 (21.7%) presented with either a choledochal cyst or nonobstructive extrahepatic biliary tree dilatation; and in 14 cases (30%) the three anomalies were found together in the same patient. After these findings, we think that congenital hepatic fibrosis, congenital cystic dilatations of the intrahepatic bile ducts (Caroli's disease), choledochal cyst and other nonobstructive dilatations of the extrahepatic biliary tree are possibly the same congenital disease with different levels of involvement.

Microsurgical treatment of varicocele in adolescents.

Between March 1990 and November 1992, 22 adolescents with varicocele, 13 unilateral left and 4 bilateral, are presented. They were all treated with microsurgical techniques by shunting the venous drainage by means of a spermatic inferior epigastric end-to-side anastomosis. The results achieved have been optimum with the clinical disappearance of varicose veins in 100% of the cases and the elimination of the spontaneous reflux of the interna spermatic vein in 100% of the patients shown by echodoppler. This technique enables the establishment of an immediate and physiological testicular venous drainage fundamental for testicular growth and development.

Long-term follow-up of 6-8 mm brachioaxillary polytetrafluorethylene grafts for hemodialysis.

Eight millimeter expanded polytetrafluoroethylene (e-PTFE) grafts, tapered to 6 mm at the arterial site, are used by our group in the upper arm in order to avoid midgraft stenosis observed with other graft sizes. Long-term results (1-12 years) on 157 6-8 mm brachioaxillary e-PTFE grafts (Gore-Tex) are analyzed. Early failure was found in 4 grafts (2.5%). The rate of late complications was 0.37 episodes per graft-year. Steal syndrome, found in 4 cases (2.5%), was successfully treated in 3 cases by graft banding. Neither midgraft nor arterial anastomotic stenosis was observed in the 63 grafts requiring surgical thrombectomy or fistulography. The primary patency rates were 73%, 53%, and 41% at 1, 3, and 5 years, respectively. The secondary patency rates were 91%, 80%, and 72% at 1, 3, and 5 years, respectively. Comparison between both curves by the log rank test was significant (p < 0.001) expressing the efficiency of rescue surgery. We conclude that a 6-8 mm graft can be successfully used for dialysis in the brachioaxillary position.

Microsurgery in gaining paediatric vascular access for haemodialysis.

One hundred and one surgical procedures performed in children for construction and maintenance of vascular accesses for haemodialysis were retrospectively analyzed. There were 86 operations performed to create a new fistula in patients without vascular access or with nonrecoverable failed angio-access. Fifteen surgical procedures were performed to treat fistula complications. The new fistulas were radiocephalic n = 60 (70%), ulnar-basilic n = 5 (5.8%), antecubital n = 9 (10.3%), and PTFE grafts n = 12 (14%). Microsurgical techniques were used in all cases, including PTFE graft fistulas. A microscope was used in 56 cases (55.4%) and magnifying loupes (x 2.5 magnification) in the rest of the operations. Early-failure rate for radiocephalic fistulas was 10%. Cumulative patency rates in radiocephalic fistulas were 79%, 75%, and 70% at 1, 2, and 5 years, respectively. No statistical differences were found from the cumulative patency curve of 730 radial-cephalic fistulas performed in adults during the same period of time. Radiocephalic fistulas can be constructed in most paediatric cases using microsurgical technique. Elbow fistulas can be the second-choice vascular access, and PTFE grafts can be reserved for children with exhaustion of autologous veins. Brachial-jugular PTFE grafts can be used in cases of subclavian vein stenosis.

Brachial-jugular polytetrafluoroethylene fistulas for hemodialysis.

A retrospective analysis was made of 16 patients who had received a brachial-jugular polytetrafluoroethylene (PTFE) graft for hemodialysis. In four patients, the procedure was used to treat malfunctioning brachio-axillary fistulas due to long venous stenosis in the axillary vein. In 12 other patients, the operation was chosen in cases of exhaustion of the veins in the upper extremity because of previous multiple failed fistulas. Two patients died with a functioning fistula 7 and 10 months after placement of the graft of causes unrelated to the vascular access. The other 14 patients retained functioning fistulas between 8 and 26 months after construction of the shunt. Three patients needed graft thrombectomy to treat occlusive episodes. No venous stenosis was found in a postoperative fistulography made in those patients. One patient needed substitution of a graft segment due to stenosis of the prosthesis crossing over the clavicle. We believe that the brachial-jugular graft is a procedure that can be considered as vascular access for hemodialysis in cases where the use of veins in the upper extremity and the axilla is not possible.