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1.
J Vasc Interv Radiol ; 22(8): 1107-16, 2011 Aug.
Article in English | MEDLINE | ID: mdl-21664144

ABSTRACT

PURPOSE: To evaluate the safety and efficacy of once-daily intraclot injections of low doses (≤ 10 mg) of tissue plasminogen activator (tPA) for thrombolysis of venous thrombosis. MATERIALS AND METHODS: In prospective studies, 33 patients with subclavian, jugular, and central venous thrombosis (SJ-CVT) (all but two cases associated with central catheters) were treated once a day with ≤ 4 mg/day of tPA, and 30 patients with acute deep vein thrombosis of the lower extremity (DVT-LE) < 14 days old were treated once a day with ≤ 10 mg/leg/day of tPA by intraclot "lacing" of thrombus without continuous infusions of tPA. RESULTS: Patency was restored in 26 (79%) of 33 patients with SJ-CVT using an average total dose of 7.1 mg of tPA/per patient and average of 2.1 treatments or days of therapy. Five patients received thrombolytic therapy for SJ-CVT as outpatients. Initial patency was restored in 29 (97%) of 30 patients with acute DVT-LE using an average total dose of 20 mg of tPA per patient over an average of 2.7 treatments/or days per patient. Follow-up imaging examinations at 6 months showed continued patency in 27 (96%)/of 28 patients. There were no major bleeding complications, and no patient required a blood transfusion. CONCLUSIONS: Intraclot injection of low doses of alteplase is effective for acute venous thrombosis, and pharmacokinetic data suggest potentially greater safety.


Subject(s)
Fibrinolytic Agents/administration & dosage , Tissue Plasminogen Activator/administration & dosage , Venous Thrombosis/drug therapy , Acute Disease , Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Prospective Studies , Treatment Outcome , Vascular Patency
2.
Cardiovasc Intervent Radiol ; 29(6): 1093-6, 2006.
Article in English | MEDLINE | ID: mdl-16802079

ABSTRACT

A serious complication for any thermal radiofrequency ablation is thermal injury to adjacent structures, particularly the bowel, which can result in additional major surgery or death. Several methods using air, gas, fluid, or thermometry to protect adjacent structures from thermal injury have been reported. In the cases presented in this report, 5% dextrose water (D5W) was instilled to prevent injury to the bowel and diaphragm during radiofrequency ablation. Creating an Insulating envelope or moving organs with D5W might reduce risk for complications such as bowel perforation.


Subject(s)
Catheter Ablation , Glucose/administration & dosage , Hot Temperature , Liver Neoplasms/surgery , Sweetening Agents/administration & dosage , Adrenal Cortex Neoplasms/pathology , Adrenocortical Carcinoma/secondary , Adult , Bile Duct Neoplasms/pathology , Bile Ducts, Intrahepatic/pathology , Carcinoma, Renal Cell/pathology , Cholangiocarcinoma/pathology , Combined Modality Therapy , Female , Humans , Isotonic Solutions , Kidney Neoplasms/pathology , Liver Neoplasms/diagnostic imaging , Liver Neoplasms/secondary , Male , Tomography, X-Ray Computed
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