Translation research articles INTRODUCTION
Iatrogenic blood loss for diagnostic purposes continues
to be a significant contributor to the. Development of
anaemia in critically ill patients. Blood taken for
diagnostic purposes can account for as much as 12 -
21%. Of blood loss in critically ill patients (von Ahsen
et al, 2001). Past measurements of average daily blood
.Loss vary between 25 8 mL (Hashimoto 1982), and
377 mL per day (Henry et al, 1986) for all laboratory
tests. Of, these. Arterial blood gases (ABGs) are the most
frequently ordered tests (Low et al, 1995; Giuliano, and
Grant 2002), accounting. For daily blood loss of
between 23 6 mL (Tarpey and Lawler 1990), and
57 mL (Low et al, 1995). More recent studies suggest
that. This is still, a problemWith Vincent et al. (2002)
reporting a total sampling volume of 41 mils per day
and O 'Hare and Chilvers (2001) reporting 70 mils
contributing,, Significantly to the development of
anaemia whose causes, are multifactorial including
bone marrow failure vitamin deficiency,,, Haemolysis.
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