Cardiovascular and interventional radiology
-
Cardiovasc Intervent Radiol · Apr 2011
Randomized Controlled Trial Multicenter Study Comparative StudyPercutaneous palliation of pancreatic head cancer: randomized comparison of ePTFE/FEP-covered versus uncovered nitinol biliary stents.
The purpose of this study was to compare the clinical effectiveness of expanded polytetrafluoroethylene/fluorinated-ethylene-propylene (ePTFE/FEP)-covered stents with that of uncovered nitinol stents for the palliation of malignant jaundice caused by inoperable pancreatic head cancer. Eighty patients were enrolled in a prospective randomized study. Bare nitinol stents were used in half of the patients, and ePTFE/FEP-covered stents were used in the remaining patients. ⋯ Complications and mean cost were similar in both groups. Regarding primary patency and ingrowth rate, ePTFE/FEP-covered stents have shown to be significantly superior to bare nitinol stents for the palliation of malignant jaundice caused by inoperable pancreatic head cancer and pose comparable cost and complications. Use of a covered stent does not significantly influence overall survival rate; nevertheless, the covered endoprosthesis seems to offer result in fewer reinterventions and better quality of patient life.
-
Cardiovasc Intervent Radiol · Feb 2010
Randomized Controlled Trial Comparative StudyPercutaneous treatment of malignant jaundice due to extrahepatic cholangiocarcinoma: covered Viabil stent versus uncovered Wallstents.
To compare clinical effectiveness of Viabil-covered stents versus uncovered metallic Wallstents, for palliation of malignant jaundice due to extrahepatic cholangiocarcinoma, 60 patients were enrolled in a prospective and randomized study. In half of the patients a bare Wallstent was used, and in the other half a Viabil biliary stent. Patients were followed up until death. ⋯ Complications and mean cost were similar in the two groups. Viabil stent-grafts proved to be significantly superior to Wallstents for the palliation of malignant jaundice due to extrahepatic cholangiocarcinoma, with comparable cost and complication rates. Appropriate patient selection should be performed prior to stent placement.
-
Cardiovasc Intervent Radiol · Sep 2009
Randomized Controlled Trial Comparative StudyA comparison of clinical outcomes with regular- and low-profile totally implanted central venous port systems.
The purpose of this study was to evaluate whether low-profile totally implanted central venous port systems can reduce the late complication of skin perforation. Forty patients (age, 57 +/- 13 years; 22 females, 18 males) were randomized for the implantation of a low-profile port system, and another 40 patients (age, 61 +/- 14 years; 24 females, 16 males) received a regular port system as control group. Indications for port catheter implantation were malignant disease requiring chemotherapy. ⋯ Two infections were observed, one port infection in each study group. Both infections were characterized as catheter-related infections (infection rate: 0.15 catheter-related infections per 1000 catheter days). In conclusion, low-profile port systems can be placed as safely as traditional chest ports and reduce the risk of developing skin perforations, which occurs when the port system is too tight within the port pocket.
-
Cardiovasc Intervent Radiol · Jan 2008
Randomized Controlled TrialDoes prebiopsy, nonsterile ultrasonography gel affect biopsy-site asepsis?
The purpose of this study was to determine the extent to which the use of nonsterile gel, prior to antiseptic procedures in ultrasonography (US)-guided percutaneous biopsies, results in contamination of the biopsy site. ⋯ We conclude that nonsterile gel used prior to percutaneous biopsy does not affect biopsy-site asepsis.
-
Cardiovasc Intervent Radiol · Sep 2007
Randomized Controlled TrialUse of 120 kilovolt tube potential for digital subtraction angiography and fluoroscopy in an image-intensifier angiographic system: decrease of skin dose in transarterial chemoembolization therapy for hepatocellular carcinoma.
In an image-intensifier angiographic system, the tube potential is commonly regulated in ranges from 75 to 90 kV for digital subtraction angiography (DSA) and fluoroscopy in transarterial chemoembolization therapy (TACE) for hepatocellular carcinoma. The purpose of this study was to investigate whether or not a 120-kV tube potential could be used for DSA and fluoroscopy in TACE to decrease the skin dose. Forty-three patients administered TACE were randomly allocated into two groups: TACE was performed using standard-kilovoltage (75- to 90-kV) DSA and fluoroscopy modes (group A; n = 20) or using high-kilovoltage (120-kV) modes (group B; n = 23). ⋯ The peak skin dose (mGy) for group A was 383.6 +/- 176.5 and that for group B was 265.1 +/- 145.1. The peak skin dose was decreased by 31% in the 120-kV mode, a statistically significant difference (t-test, p = 0.022). We conclude that the use of 120 kV tube potential for DSA and fluoroscopy may be one option for performing TACE while decreasing the skin dose.