RADIOMETER ABL90 FLEX User Manual

ABL90 FLEX reference manual 8. Parameters
8-17
Symbol Definition Type Eq.
p50(st) Partial pressure (or tension) of oxygen at half
saturation (50 %) in blood at standard
conditions: temperature = 37 °C
pH = 7.40
pCO
2
= 5.33 kPa
FCOHb, FMetHb, FHbF set to 0
p50(st) may, however, vary due to variations
in 2,3-DPG concentration or to the presence
of abnormal hemoglobins.
dv 21
pO
2
(Aa)
Difference in the partial pressure (or tension)
of oxygen in alveolar air and arterial blood.
Indicates the efficacy of the oxygenation
process in the lungs.
dv 22
pO
2
(Aa,T)
Difference in the partial pressure (or tension)
of oxygen in alveolar air and arterial blood at
patient temperature.
dv 23
pO
2
(a/A) Ratio of the partial pressure (or tension) of
oxygen in arterial blood and alveolar air.
Indicates the efficacy of the oxygenation
process in the lungs.
dv 24
pO
2
(a/A,T) Ratio of the partial pressure (or tension) of
oxygen in arterial blood and alveolar air at
patient temperature.
dv 25
pO
2
(x) or p
x
Oxygen extraction tension of arterial blood.
Reflects the integrated effects of changes in
the arterial pO
2
(a), ctO
2
and p50 on the ability
of arterial blood to release O
2
to the tissues
[8].
dv 26
pO
2
(x,T) or
p
x
(T)
Oxygen extraction tension of arterial blood at
patient temperature.
dv 50
ctO
2
(B) Total oxygen concentration of blood.
Also termed O
2
content.
dv 27
ctO
2
(av
–
)
Oxygen concentration difference between
arterial and mixed venous blood.
dv 28
BO
2
Hemoglobin oxygen capacity; the maximum
concentration of oxygen bound to hemoglobin
in blood saturated, so that all deoxyhemoglobin
is converted to oxyhemoglobin.
dv 29
ctO
2
(x) Extractable oxygen concentration of arterial
blood.
Defined as the amount of O
2
that can be
extracted per liter of arterial blood at an
oxygen tension of 5.0 kPa (38 mmHg),
maintaining constant pH and pCO
2
[8].
dv 30
D
·
O
2
Oxygen delivery; the total amount of oxygen
delivered to the whole organism per unit of
time.
dv 31

RADIOMETER ABL90 FLEX Specifications

General

Brand	RADIOMETER
Model	ABL90 FLEX
Category	Measuring Instruments
Language	English