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Dear All,
Our Delivery Suite has a blood gas analyser, initially for
foetal scalp pH measurements, but more frequently these days, for blood gas
analysis of cord blood samples.
Base excess is used to determine whether an acidosis is
acute or chronic, but in discussion with obstetric and midwifery colleagues, there
is some disagreement as to which calculation of Base Excess is the most
appropriate in this context, ie BEact or BEecf.
A couple of abstracts obtained from PubMed suggest the BEact
(calculated from pH, bicarb, Hb and sO2) rather than the BEecf (calculated from
pH and bicarb).
What do other labs use?
Many thanks.
Gareth
Gareth Davies
Clinical Biochemist
Medical Biochemistry Department
Wrexham LL13 7AS
01978 725345
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