Purpose: This study was performed To investigate the use of hydrophilic guidewires for facilitating catheter advancement during varicose vein treatment using radiofrequency ablation (RFA) or cyanoacrylate closure (CAC).
Methods: From March 2016 to April 2019, 463 limbs of 285 with incompetent great saphenous veins were subjected to RFA (321 limbs of 197 patients) or CAC (142 limbs of 88 patients). Procedure records were reviewed for the use of a hydrophilic guidewire, reason for the guidewire usage, and diameter of the guidewire.
Background: Dexmedetomidine have both sedative and analgesic properties without respiratory-depressant effect. This study aims to evaluate the safety and effectiveness of sedation and analgesia using dexmedetomidine for the endovenous treatment of varicose veins.
Methods: This study included 88 patients (male =38, female =50; mean age, 48.
Background: Redo surgery for recurrent varicose veins of the great saphenous vein (GSV) is technically more challenging than the initial surgery.
Objective: To compare 980 and 1,470-nm endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) for the treatment of residual GSV insufficiency after saphenofemoral ligation ± stripping.
Materials And Methods: Thirty-seven limbs in 29 patients with recurrent varicose veins were retrospectively evaluated.
Purpose: To report early results following prostatic artery embolization (PAE) and compare outcomes between nonspherical polyvinyl alcohol (PVA) particles and microspheres to treat lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH).
Methods: PAE was performed in nine patients (mean age: 78.1 years) with symptomatic BPH.
Purpose: To evaluate the dwell time and actual survival rates of peripherally inserted central catheter (PICC) placements after balloon angioplasty in patients with unexpected central venous obstructions.
Materials And Methods: Data were obtained on all PICC insertions performed in a tertiary care hospital from August 2008 to December 2013. Thirty-five PICCs attempted after balloon angioplasty in 25 patients (15 male and 10 female patients; mean age, 63 years).
Objective: To evaluate the efficacy and safety of balloon-occluded retrograde transvenous obliteration (BRTO) with sodium tetradecyl sulfate (STS) liquid sclerotherapy of gastric varices.
Materials And Methods: Between February 2012 and August 2014, STS liquid sclerotherapy was performed in 17 consecutive patients (male:female = 8:9; mean age 58.6 years, range 44-86 years) with gastric varices.
Purpose: To demonstrate 1-year outcomes after low-energy endovenous laser ablation (EVLA) of incompetent saphenous veins with linear endovenous energy density (LEED) of 80 J/cm or lower with the use of a 1,470-nm diode laser.
Materials And Methods: Incompetent saphenous veins in 236 patients (355 limbs; Clinical/Etiology/Anatomy/Pathophysiology classifications of C2-C4) were treated by EVLA with a bare-tipped 1,470-nm laser with LEED no greater than 80 J/cm (mean, 72.4 J/cm) and laser power of 8-12 W.
Objective: To compare the efficacy and adverse effects of endovenous foam sclerotherapy (EFS) and liquid sclerotherapy (ELS) using a microcatheter for the treatment of varicose tributaries.
Materials And Methods: From December 2007 to January 2009, patients with venous reflux in the saphenous vein were enrolled. The foam or liquid sclerosant was injected through a microcatheter just before endovenous laser ablation (EVLA).
Intraperitoneal bleeding after radiofrequency ablation (RFA) is the most common major vascular complication due to direct needle injury to a vessel or liver capsule. However, intraperitoneal bleeding as a result of a delayed hepatic rupture after RFA for liver tumors is an extremely rare complication. The present report describes a case of intraperitoneal hemorrhage caused by delayed hepatic rupture resulting from arterioportal fistula after RFA for hepatic metastasis from colorectal cancer and successful management using transcatheter embolization.
View Article and Find Full Text PDFBackground: Diabetes mellitus tends to have the greatest impact on the smaller vessels and contributes significantly to occlusive disease from the popliteal artery distally.
Purpose: To evaluate the clinical outcomes after a balloon angioplasty with or without stent placement in diabetic patients with critical limb ischemia (CLI) by chronic total occlusion (CTO) limited to below-the-knee (BTK) arteries.
Material And Methods: From August 2005, patients who presented CLI and CTO limited to the BTK arteries, and who underwent endovascular treatment, were included in this study.
Purpose: To compare a split lumen (SLC) with the standard dual-tip hemodialysis catheter (DTC).
Materials And Methods: The patients who underwent DTC insertion or SLC insertion were enrolled. Initial catheter dwell times (ICDT) and catheter-related complications were compared.
We investigated the patterns of evolution of portal vein tumor thromboses (PVTTs) and the changes in serum tumor marker levels in untreated hepatocellular carcinomas. The mean time required for the subsegmental or lower-order branch PVTTs and the segmental PVTTs to reach the large portal vein was 120 and 101 days, respectively. The mean values of the serum alpha-fetoprotein levels markedly increased after the appearance of PVTTs from 1858.
View Article and Find Full Text PDFObjective: To evaluate the efficacy of various strategies for revascularization of chronic total occlusion of femoropopliteal arteries when the guide wire does not pass in an anterograde direction.
Materials And Methods: Twenty-four patients with totally occluded femoropopliteal arteries (mean occlusion length 13.75 cm; range, 6-22 cm) were treated by using a retrograde approach and two novel catheters.
Background: Percutaneous ablation of incompetent perforators has been introduced as a safe and efficacious alternative.
Objective: To compare two methods of treating incompetent thigh perforator and great saphenous veins (GSV).
Materials And Methods: Patients with varicose veins of CEAP C2 and C3 with incompetent perforating veins (IPVs) in the thigh without evidence of saphenofemoral reflux and with obvious venous reflux from IPVs into the GSV distal to IPVs were included.
Objective: We wanted to evaluate the effectiveness of endovenous ablation of the incompetent vein of Giacomini using a 980-nm diode laser.
Materials And Methods: A total of 18 patients (18 limbs, 4%) had the incompetent vein of Giacomini. Retrograde reflux originating from the great saphenous vein was noted in sixteen limbs and paradoxical diastolic anterograde reflux from the saphenopopliteal junction was observed in two limbs.
Purpose: To evaluate the influence of heavy calcification on iliac arterial stent expansion and patency and to define the spatial relationship between the stent and heavy calcifications on computed tomography (CT).
Materials And Methods: Thirteen patients (11 men, two women; mean age, 66.5 y) with 14 heavily calcified iliac arteries received primary stent treatment between 1998 and 2008.
Objective: We wanted to evaluate the status of self-expandable nitinol stents implanted in the P2 and P3 segments of the popliteal artery in Korean patients.
Materials And Methods: We retrospectively analyzed 189 consecutive patients who underwent endovascular treatment for stenoocclusive lesions in the femoropopliteal artery from July 2003 to March 2009, and 18 patients who underwent stent placement in popliteal arterial P2 and P3 segments were finally enrolled. Lesion patency was evaluated by ultrasound or CT angiography, and stent fracture was assessed by plain X-rays at 1, 3, 6 and 12 months and annually thereafter.
Purpose: To evaluate the feasibility of transauricular arterial access and compare the procedure time needed for hepatic artery angiography via transfemoral versus transauricular arterial access in a rabbit model.
Materials And Methods: This study was approved by the research animal care and use committee. Twenty rabbits were divided into transfemoral (n = 10) and transauricular access groups (n = 10).
Objective: We wanted to evaluate the efficacy of stent placement using the coaxial technique with a stiff, long introducer sheath in patients with technical failure using an angiographic catheter for the obstructions proximal to the descending colon.
Materials And Methods: Self-expandable metallic stent placement was attempted under fluoroscopy-guidance in 77 consecutive patients who had malignant colorectal obstruction. Stent placement was performed using an angiographic catheter and a guide wire.
Purpose: This study evaluates the anti-tumor effect of regional chemotherapy compared with chemoembolization in an animal model.
Materials And Methods: Twenty-one rabbits bearing VX2 liver tumors were divided into the following four groups: (a) the transarterial (TA) group (n=6) received a transarterial injection of doxorubicin through the hepatic artery (1 mg/kg); (b) the transarterial and transportal (TAP) group (n=6) received injections of doxorubicin through both the hepatic artery (1 mg/kg) and the portal vein (1 mg/kg); (c) the transarterial chemoembolization (TACE) group (n=6) received a transarterial injection of doxorubicin (1 mg/kg) followed by gelatin sponge embolization; and (d) the control group (n=3) received no treatment. With the use of computed tomography, tumor growth rates were calculated and microscopic examinations were performed to evaluate the extent of tumor necrosis.
Objective: The objective of our study was to evaluate the frequency, morphologic patterns, temporal changes, and clinical significance of biloma after radiofrequency ablation (RFA) of hepatocellular carcinoma (HCC).
Materials And Methods: Between April 1999 and May 2008, 2,630 patients with HCC underwent a total of 3,284 sessions of RFA at our institution. We retrospectively reviewed all CT scans obtained before and after RFA in all patients.
Purpose: To assess retrospectively the therapeutic results, complications, and therapeutic approach to ethanol embolotherapy of extremity arteriovenous malformations (AVMs) involving the bone.
Materials And Methods: From December 1996 to May 2009, 22 patients (12 male, 10 female; eight children, 14 adults; age range, 1-64 years) with extremity AVMs involving the bone underwent staged ethanol embolotherapy (range, 1-12 procedures; mean, 4.4 procedures) under general anesthesia.