title: A new complication of chemotherapy administered via permanent indwelling central venous catheter.
abstract: BACKGROUND
  The use of permanent intravenous access devices for chemotherapy administration has become a common practice in clinical oncology. Therefore, awareness of potential complications is important. The authors previously reported the use of high dose 5-fluorouracil (5-FU) (2600 mg/m2) and leucovorin (500 mg/m2) as a weekly 24-hour infusion for patients with colorectal carcinoma. In this report, a new complication of permanent indwelling catheters with high dose 5-fluorouracil (2600 mg/m2) and leucovorin (500 mg/m2) as a weekly 24-hour infusion for colorectal carcinoma is described.
  
  
  METHODS
  Twenty-two patients in the previous Phase II trial on weekly high dose 5-FU and leucovorin were included in this study. All patients had either a single-lumen Port-o-cath (Pharmacia Deltec, St. Paul, MN) or Hickman catheter (Travenol Laboratories, Deerfield, IL). Occluded catheters were explanted, and the material found in their lumen was analyzed using infrared spectroscopy.
  
  
  RESULTS
  Eleven of 22 patients had catheter blockage, and calcium carbonate formation (Calcite 100%) was identified within these catheters.
  
  
  CONCLUSIONS
  Calcite formation causing catheter occlusion is a new and important complication resulting from using intravenous access devices for chemotherapy administration. Oncologists should be alerted to this phenomenon when high dose 5-FU and leucovorin are administered for 24 hours by continuous infusion using a single-port port-o-cath.
authors.affiliation: Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami School of Medicine, Jackson Memorial Hospital, FL 33136, USA.
authors.forename: B
authors.initials: B
authors.lastname: Ardalan
authors.forename: M R
authors.initials: MR
authors.lastname: Flores
mesh_terms: D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage* / Q000627:therapeutic use; D002119:Calcium Carbonate; D002405:Catheterization, Central Venous / Q000009:adverse effects* / Q000295:instrumentation; D002408:Catheters, Indwelling / Q000009:adverse effects*; D015179:Colorectal Neoplasms / Q000188:drug therapy; D004868:Equipment Failure; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage; D006801:Humans; D007260:Infusion Pumps; D002955:Leucovorin / Q000008:administration & dosage; D008297:Male; D008875:Middle Aged
chemical_list: D002119:Calcium Carbonate; D002955:Leucovorin; D005472:Fluorouracil