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Oncology nursing forum · Apr 1994
Comparative StudyAccuracy of coagulation values obtained from a heparinized central venous catheter.
- K M Pinto.
- St. Joseph's Hospital, Phoenix, AZ.
- Oncol Nurs Forum. 1994 Apr 1;21(3):573-5.
Purpose/ObjectivesTo compare coagulation values of blood samples drawn from heparinized central venous catheters (CVCs) and peripheral veins.DesignCorrelational.SettingAdult, acute-care hematology/oncology unit in a 1,000-bed teaching hospital.SampleTwelve adult patients with cancer who had varied diagnoses and patent CVCs.MethodsSimultaneous blood samples were drawn from the CVC and a peripheral vein and were tested for prothrombin time (PT) and activated partial thromboplastin time (aPTT).Main Research VariablesPT and aPTT values.FindingsPT and aPTT values were significantly prolonged in samples drawn from CVCs when compared to peripherally drawn samples.ConclusionsAccurate coagulation values cannot be obtained from a heparinized CVC.Implications For Nursing PracticeBlood for coagulation values should be obtained from peripheral veni-puncture. Further research should explore the effects of various catheters, heparin dwell time, and systemic anticoagulation on coagulation values.
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