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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Evaluation of a new blood-conserving arterial line system for patients in intensive care units.

OBJECTIVE: To evaluate blood samples obtained from a new blood-conserving arterial line system for the presence of hemodilution or heparin contamination. DESIGN: Prospective, clinical trial. SETTING: A coronary intensive care unit in a tertiary-care teaching hospital. PATIENTS: Cardiovascular patients in whom invasive arterial blood pressure monitoring was indicated. INTERVENTIONS: Paired blood samples were obtained from a conventional arterial line system and a new blood-conserving arterial line system for the measurement of hematocrit and partial thromboplastin time, and compared to evaluate for the presence of either hemodilution or heparin contamination. MEASUREMENTS AND MAIN RESULTS: A Bland-Altman bias analysis of the variability between the two blood draw methods was performed. The analysis indicated that a) a randomly determined partial thromboplastin time obtained from the blood-conserving arterial line would lie between 3.32 and -5.11 of the partial thromboplastin time taken from the conventional arterial line value with 95% confidence; and b) a randomly determined hematocrit obtained from the blood-conserving arterial line would lie between 1.97 and -1.85 of the hematocrit taken from the conventional arterial line value with 95% confidence. CONCLUSIONS: We concluded that a) blood samples obtained with the blood-conserving arterial line demonstrate no evidence of hemodilution or heparin contamination; b) the blood-conserving arterial line provides blood samples without the need for an initial volume of blood to be discarded; c) the blood-conserving arterial line provides a means for blood conservation in the intensive care setting.[1]

References

  1. Evaluation of a new blood-conserving arterial line system for patients in intensive care units. Silver, M.J., Jubran, H., Stein, S., McSweeney, T., Jubran, F. Crit. Care Med. (1993) [Pubmed]
 
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