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A Major Study Using Daxor's BVA-100 Blood Volume Analyzer Reported at the Annual Society of Critical Care Medicine Conference
| Source: Daxor Corp.
NEW YORK, NY -- (MARKET WIRE) -- February 26, 2007 -- Daxor Corporation (AMEX : DXR ) -- The study
entitled "Does Hematocrit Reflect Red Cell Volume when Adjusted for Plasma
Volume" involved 370 patients who had a total of 689 separate blood volume
measurements in the intensive care units at the Queen's Medical Center in
Honolulu, Hawaii. Senior authors of the study were Dr. Kurt Edwards and
Mihae Yu, et al., from the University of Hawaii. This is the largest
series in medical history where hematocrits were compared to direct blood
volume measurement.
The study compared the hematocrit, which is the proportion of a volume of a
blood sample that is red blood cells to the result obtained when actually
measuring the volume of blood in a patient. The hematocrit is the standard
test used to estimate the quantity of blood in a person and is used in
hundreds of thousands of clinical decisions annually with respect to
whether or not to transfuse a patient. Patients in the study were
critically ill; 36% had severe sepsis and/or shock; 31.2% were trauma
patients; 10% were congestive heart failure patients; and 14% were acute
kidney failure patients. In 28 (5% of the cases), patients had lost more
than 40% of their red blood cells and still had a hematocrit of 30 or
better, indicating no need for transfusions. Under usual circumstances they
would have been denied a transfusion. In 12 (2% of the patients), there
was a red cell deficit of less than 10% with a hematocrit less than 30.
These were patients who clearly did not need transfusions; yet, under the
usual circumstances, would have been transfused. The authors concluded
that direct measurement of blood volume provides a more specific guide to
red cell transfusion than the hematocrit test which does not measure volume
directly. Patients may be denied transfusions who would benefit from
transfusions, and some patients may be transfused who do not need a
transfusion.
Daxor Corporation manufactures and markets the BVA-100, a semi-automated
Blood Volume Analyzer. The BVA-100 is used in conjunction with Volumex,
Daxor's single use diagnostic kit. For more information regarding Daxor
Corporation's Blood Volume Analyzer BVA-100, visit Daxor's website
www.Daxor.com.