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Efficacy of Thrombolytic Therapy for Occlusion of Long-Term Catheters
Cheryl Ann Monturo, R.N., M.S.N., C.N.S.N.
Nutrition Support Service, Hospital of the University of Pennsylvania, Philadelphia College of Pharmacy and Science, Philadelphia, Pennsylvania
Roland N. Dickerson, PHARM.D.
Nutrition Support Service, Hospital of the University of Pennsylvania, Philadelphia College of Pharmacy and Science, Philadelphia, Pennsylvania
James L. Mullen, M.D.
Nutrition Support Service, Hospital of the University of Pennsylvania, Philadelphia College of Pharmacy and Science, Philadelphia, Pennsylvania
Nineteen ambulatory outpatients requiring a tunneled central venous access device with catheter occlusion were studied. Mean catheter life was 7.9 ± 8.2 months (range, from 1-36 months) at the time of the occlusion.
Urokinase (5000 units/ml) was injected in sufficient amount to fill the internal volume of the catheter and allowed to stay for 5 to 10 min before attempting to aspirate. Repeated aspiration attempts were performed every 5 to 10 min for a maximum of 30 to 60 min or patency. In the event catheter patency was not restored, the thrombolytic solution was aspirated from the catheter and a maximum of two additional trials were instituted. Results included clearance of four out of 15 withdrawal occlusions (27%) and two out of four resistance to infusion occlusions (50%). Overall, successful catheter clearance occurred in six out of 19 occlusions (32% ).
The efficacy rate of thrombolytic therapy for successfully clearing occluded catheters at our institution using conventional low-dose thrombolytic therapy is markedly lower than previously reported rates of 57 to 100%. The reasons for this discrepancy may reflect differences in dosage of thrombolytic agent, method of administration, frequency of monitoring of catheter patency, and catheter life. (Journal of Parenteral and Enteral Nutrition 14:312-314, 1990)
Journal of Parenteral and Enteral Nutrition, Vol. 14, No. 3,
312-314 (1990)
DOI: 10.1177/0148607190014003312
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