Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “VEINS”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 577 records · Page 32Linked to original sources
PubMed1982

Revascularization of the femoropopliteal arteries using saphenous vein, polytetrafluoroethylene, and umbilical vein grafts. Five- and six-year results.

Saphenous vein (SV), polytetrafluoroethylene (PTFE), and umbilical vein (UV) grafts placed in the femoropopliteal or tibial areas for occlusive arterial disease were compared for the years between 1975 and 1982. In proximal v distal popliteal replacement, the early failure rate differed only in PTFE grafts to relieve ischemia, with below-knee failure being worse. In all femoropopliteal grafts for claudication, the SV were better than the UV grafts. When done for ischemia, the SV were better than the UV grafts. When done for ischemia, the SV were better than the PTFE grafts. By life-table analysis, SV grafts done for claudication or for ischemia were superior to PTFE grafts. The UV grafts also were better than PTFE grafts. Arteriography showed marked aneurysmal dilatation in a UV graft in the common femoral to popliteal to anterior tibial area at 50 months. In a second patient, mild aneurysmal dilatation was seen. The UV graft is acceptable when SV is not available. The PTFE graft across the knee gives poor results but above the knee is comparable with UV grafts.

Actuarial Analysis↗
PubMed1992

Assessment of stripping the long saphenous vein in the treatment of primary varicose veins.

Stripping of the long saphenous vein (LSV) may prevent recurrence of varices, although this has not been demonstrated using objective criteria. The aim of this study was to determine whether the addition of LSV stripping, from groin to upper calf, to saphenofemoral junction (SFJ) ligation prevents residual reflux, and whether LSV stripping to the upper calf results in greater neurological complications. Sixty-nine patients with primary varicose veins, LSV reflux and SFJ incompetence, confirmed by duplex ultrasonography and photoplethysmography, were studied. A total of 105 limbs were treated by SFJ ligation and avulsion of varices; patients were randomized to undergo stripping of the LSV to the upper calf (n = 49) or no additional treatment (n = 56). Three months after surgery all patients were examined clinically, by duplex ultrasonography and by photoplethysmographic tests of venous function, to establish the extent of persisting varices. Fewer persisting incompetent LSVs in the calf were found when the LSV was stripped (n = 9) than after SFJ ligation alone (n = 25) (P < 0.01). Photoplethysmographic refilling times were improved to a similar extent in both groups after surgery but were lower in those who had residual LSV reflux (P < 0.05). Six limbs developed paraesthesia in the distribution of the saphenous nerve: two in the group that were stripped and four in those that were not. These data suggest that LSV reflux is more completely abolished by combining LSV stripping with SFJ ligation; stripping the LSV to the upper calf does not result in a higher incidence of injury to the saphenous nerve.

Aged↗
PubMed2005

Quilt venoplasty using recipient saphenous vein graft for reconstruction of multiple short hepatic veins in right liver grafts.

Major short hepatic veins (SHV) are indicated for vascular reconstruction to prevent excessive hepatic venous congestion of right liver grafts. As separate anastomoses of multiple small SHVs are vulnerable to stenosis or regeneration-related torsion, a conjoined large opening of SHVs may be better than multiple separate anastomoses. We devised an innovative method to reconstruct SHVs through a patchwork quilt using autologous greater saphenous vein (GSV). We applied this method to 3 different configurations of multiple SHVs. For double SHVs in alignment, 2 GSV fragments were stitched longitudinally to wrap 2 SHVs, forming the cuff shape of an ovoid bowl. For double SHVs not in alignment, a central patch of GSV was placed between 2 SHVs to offset the alignment gap, and the outer fence of a long GSV fragment was anastomosed to make a common cuff. For complex anatomy of quadruple SHVs, the central patch was designed to contact with 4 SHVs altogether and the outer fence was similarly created. Although this method was applied to only 4 right liver grafts, there was no disturbance of SHV drainage during 4 months of follow-up. In conclusion, we think that this quilt venoplasty technique using autologous GSV may be applicable for reconstruction of multiple or variant SHVs.

Adult↗
PubMedDate not supplied

Renal vein to portal vein collaterals in three cases of renal cell carcinoma extending into the inferior vena cava: consequences for chemoembolization.

Three patients with renal vein and inferior vena cava (IVC) tumor thrombus from left renal cell carcinoma (RCC) showed Lipiodol deposits in the liver following selective SMANCS (styrene maleic acid neocarzinostatin)/Lipiodol embolization of the renal tumors. In 2 of the 3 patients, renal-portal communications were demonstrated during selective renal arteriography. In 1 of these patients, considerable liver dysfunction occurred after the second renal chemoembolization and Lipiodol deposits persisted in the liver for about 1 month. We conclude that these anastomoses need to be considered prior to embolization therapy of patients with RCC and tumor thrombus in the renal vein and IVC. Sclerosing substances or larger particles may be better embolic agents in such patients.

Aged↗
PubMedDate not supplied

Portal vein absence and nodular regenerative hyperplasia of the liver with giant inferior mesenteric vein.

We present a patient with nodular regenerative hyperplasia of the liver (NRH) and portal vein absence studied with CT, MR imaging, and MR angiography. The most striking feature was exuberant hemorrhoids due to a giant hepatofugal inferior mesenteric vein. A relationship between unbalanced portal blood flow and nodular regenerative transformation of the liver is suggested in this patient.

Adolescent↗
PubMed2006

Ex vivo extended left hepatectomy with caval preservation, temporary portacaval shunt, and reconstruction of the right hepatic vein outflow using a reversed portal vein bifurcation graft.

Liver resections that require ex vivo techniques occur rarely, but when done are generally performed on veno-veno bypass to maintain venous return and decompress the portal circulation during the anhepatic phase of the procedure. We describe an ex vivo extended left hepatectomy that was performed with preservation of the inferior vena cava and the use of a temporary portacaval shunt to eliminate the need for veno-venous bypass. Ex vivo resection allowed reconstruction of right hepatic vein branches, using the patient's reversed portal vein bifurcation as a graft to provide venous outflow.

Adenocarcinoma↗
PubMed2001

Long-term follow-up of saphenous vein, internal jugular vein, and knitted Dacron patches for carotid artery endarterectomy.

To determine whether choice of material used for patch closure following carotid artery endarterectomy (CAE) influences rates of early or late restenosis, stroke, and death, 274 consecutive CAEs were retrospectively reviewed. Saphenous vein (SV) was used in 159 (58.0%) procedures; everted, double-thickness jugular vein (JV) was used in 25 (9.1%); and knitted Dacron (KD) was used in 90 (32.9%). Primary closure was not used in this series. There were four perioperative strokes: two (1.3%) in SV, one (4%) in JV, and one (1.1%) in KD (NS). Follow-up was obtained on 263 (96%) operated arteries (mean 41.5 months). Duplex scan results were available for 236 (89.7%) of these arteries (mean follow-up time 33.7 months). There were three (2%) late strokes in SV and two (2.2%) in KD (NS). In long-term follow-up, one patient (0.7%) in SV and two (2.4%) in KD developed > 80% stenosis (NS). One patient (0.7%) in SV, one (5.3%) in JV, and one (1.2%) in KD had total occlusion of the operated vessel (NS). Three procedures (2.2%) in SV, 1 (5.3%) in JV, and 7 (8.5%) in KD demonstrated moderate stenosis (50-79%) (NS). Three-year follow-up shows that choice of patch material does not affect early or late stroke rate, stroke-related death rate, rate of high-grade (> 80%) restenosis, or rate of total occlusion. There is a higher incidence of moderate stenosis in KD. Although our results and a review of the literature do not indicate that these patients are at increased risk for symptoms or progression of stenosis, they should be followed by duplex scanning to ensure that this is the case.

Aged↗
PubMed2004

Phenotypic and functional differences between human saphenous vein (HSVEC) and umbilical vein (HUVEC) endothelial cells.

The vascular endothelial cell (EC) plays an essential role in the pathogenesis of inflammation, transplant rejection and tumour metastasis. Most research on vascular ECs uses human umbilical vein endothelial cells (HUVECs). However, HUVECs are derived from immune-naive foetal tissue, and show significant functional differences from adult vascular endothelium. In this paper, we characterise an alternative model based on human saphenous vein ECs (HSVECs), describe their culture conditions and provide a detailed functional comparison with HUVECs. Compared with HUVECs, HSVECs show an increased sensitivity to ox-LDL and a reduced response to cytokines, as indicated by adhesion molecule expression as well as leukocyte adhesion and transmigration. With respect to their ability to present antigen, HSVECs have a higher level of HLA-DR, CD40 and ICOS-L following cytokine stimulation. In addition, HSVECs upregulate the costimulatory ligand CD80 (B7.1) following CD40 ligation, and support allogeneic T cell proliferation, while HUVECs fail to express CD80. Due to differential expression of adhesion molecules, poorly differentiated tumour cell lines also showed more adhesion to HSVECs than to HUVECs. These results indicate that HSVECs have advantages over HUVECs for studying adult vascular endothelial pathology in vitro.

Base Sequence↗
PubMed2005

Intravascular synovial sarcoma of the external iliac vein and reconstruction with the superficial femoral vein.

Intravascular synovial sarcoma is a rare neoplasm that arises in large veins of the junctional zone between the proximal leg and lower trunk in adult women. Herein we report the first case of an intravascular synovial sarcoma of the external iliac vein. It was successfully treated with neoadjuvant radiotherapy, radical excisional surgery, and combined arterial and venous reconstruction. Intravascular synovial sarcoma should be considered in the differential diagnosis of any adult woman with deep venous thrombosis and a mass of the femoral or iliac venous system.

Female↗
PubMed2004

Portal vein arterialization for liver transplantation with extensive portomesenteric vein thrombosis: a case report.

We report herein a case of extensive thrombosis of portal venous system including mesenteric vein in a 70-year-old man who suffered from end-stage post-hepatitis C cirrhosis and who underwent orthotopic liver transplantation. There was no way to divert portal blood flow to the new liver because such an extensive thrombosis of portomesenteric venous system. There are some case reports of portocaval hemitransposition with some success but high mortality. We decided to arterialize the portal vein of the liver allograft with the recipient hepatic artery and the donor hepatic artery was anastomosed to the supraceliac aorta. He recovered slowly from the operation. At 1 year after the transplantation, he is doing well with perfect liver function tests. This case challenges our belief that portal blood flow is essential for the liver because of hepatotrophic factors.

Aged↗
PubMed1993

Silastic catheterization of the axillary vein in neonates: an alternative to the internal jugular vein.

The axillary vein is a suitable alternative to the jugular venous system for tunnelled silastic catheterization in neonates, and should be included in the armamentarium of the surgeon who treats neonates. It is technically easy and is comparable to the internal jugular vein in terms of complications. Proper positioning of the catheter tip can sometimes be problematic, but without a resultant increase in morbidity or mortality.

Axillary Vein↗
PubMed1983

Comparison of subclavian vein with femoral vein catheterization for hemodialysis.

Subclavian vein catheterization (SVC) is not widely accepted for vascular access because it is considered more invasive than femoral vein catheterization (FVC). The use of FVC and SVC for acute vascular access was compared for 9 mo each. Complications were minimal with both, but access related hospitalizations were lower and the number of out-patient dialyses performed were higher with SVC than FVC. Complications with SVC might have been minimized by using an 18-gauge metallic needle for insertion, avoiding interdialytic infusions and using SVC for less than 4 wk.

Catheterization↗
PubMed1998

Prospective randomized trial of carotid endarterectomy with primary closure and patch angioplasty with saphenous vein, jugular vein, and polytetrafluoroethylene: long-term follow-up.

PURPOSE: This study examines the long-term clinical outcome and the incidence of recurrent stenosis (> or = 50%) after carotid endarterectomy (CEA) with primary closure (PC) versus vein patch closure (VPC), saphenous (SVP), and jugular vein (JVP) and polytetrafluoroethylene patch closure (PTFE-P). METHODS: A total of 399 CEAs were randomized into the following groups: 135 PC, 134 PTFE-P, and 130 VPC (SVP alternating with JVP). Postoperative duplex ultrasound scans were performed at 1, 6, and 12 months and every year thereafter. The mean follow-up was 30 months with a range of 1 to 62 months, and demographic characteristics were similar in all groups. Kaplan-Meier analysis was used to estimate the risk of restenosis and the stroke-free survival. RESULTS: The incidence of ipsilateral stroke was 5% (seven of 135) for PC, 1% (one of 134) for PTFE-P, and 0% for VPC (PC vs VPC, p = 0.008; PC vs PTFE-P, p = 0.034). Seven strokes occurred in the perioperative period. All three groups had similar mortality rates. The cumulative stroke-free survival rate at 48 months was 82% for PC, 84% for PTFE-P, and 88% for VPC (p < 0.01 for PC vs PTFE-P or VPC). PC had a higher incidence of recurrent stenosis and occlusion (34%) than PTFE-P (2%) and VPC (9%) (SVP 9%, JVP 8%) (p < 0.001). PTFE-P had a lower recurrent stenosis rate than VPC (p < 0.045). Restenoses necessitating a redo CEA were also higher for PC (11%) than for PTFE-P (1%) and VPC (2%) (p < 0.001). Women with PC had a higher recurrent stenosis rate than men (46% vs 23%, p = 0.008). Kaplan-Meier analysis showed that freedom from recurrent stenosis at 48 months was 47% for PC, 84% for VPC, and 96% for PTFE-P (p < 0.001). The SVP and JVP results were comparable. The mean operative diameter of the internal carotid artery was similar in patients with or without restenosis. Significantly more late internal carotid artery dilatations occurred in the VPC group compared with the PC group. CONCLUSIONS: Patch closure (VPC or PTFE-P) is less likely than PC to cause perioperative stroke. Patching was also superior in lowering the incidence of late recurrent stenoses, especially in women.

Angioplasty↗
PubMed1988

Deep vein thrombosis of the axillary-subclavian veins: epidemiologic data, effects of different types of treatment and late sequelae.

Upper extremity deep venous thrombosis (DVT) is uncommon. In the city of Malmö, Sweden (240,000 inhabitants), 296 cases undergoing phlebography due to a suspicion of upper extremity DVT, during 1971-1986 were analysed. 165 arm phlebograms did not reveal any thrombi (56%). In 11 cases (4%) external compression of the vein was found. Thrombi in the axillary or subclavian vein were found in 120 cases (40%) and were classified as primary in 73 cases and secondary in 47 cases. Only seven cases of effort thrombosis were found. Four cases had neurovascular symptoms mimicking thoracic outlet syndrome and underwent elective first rib resection. None of the patients with primary DVT had a fatal pulmonary embolism (FPE). One patient had clinical signs suspicious of pulmonary embolism (PE), however, scintigraphy of the lungs was negative. Of the cases with secondary thrombi three cases had fatal, and one case had contributory PE at autopsy. Additionally, one patient had a non-fatal PE verified scintigraphically. Post-thrombotic sequelae from the arm were in no case so severe that the patient had to change occupation. Patients with primary DVT had moderate complaints in three and mild in fifteen cases. Those with secondary arm thrombi experienced only moderate symptoms in two cases and mild sequelae in fourteen. There was no correlation between the type of treatment and late post-thrombotic symptoms. From this study it can be concluded that phlebography must be undertaken before treatment can be started in patients with a suspected arm DVT. Primary DVT seems to be a "benign" disease, and in general treatment with anticoagulants is sufficient.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed2002

Resolution of secondary pulmonary arteriovenous malformations after embolization of a congenital superior-mesenteric-vein-to-left-renal-vein shunt.

A 7-year-old boy who presented with cyanosis and exercise intolerance was diagnosed with pulmonary arteriovenous malformations (PAVMs) secondary to a congenital superior-mesenteric-vein-to-left-renal-vein (SMV-LRV) shunt. Resolution of the PAVMs (confirmed by chest computed tomography [CT]) occurred after embolization of this shunt. Although the pathogenesis of his PAVM is not well known, this case demonstrated a close relationship between a congenital SMV-LRV shunt and the development of PAVM.

Arteriovenous Malformations↗