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Flashcards in Acid-Base Balance Deck (41)
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31

Identify type of hemoglobin
hemoglobin bound to CO
(bond between CO and Hb is reversible but is 200 times
as strong as the bond between O2
and Hb)

Carboxyhemoglobin

32

Identify type of hemoglobin
hemoglobin unable to bind
oxygen because iron is in an oxidized rather than reduced state; Fe3
+ can be reduced by methemoglobin
reductase (red blood cells)

Methemoglobin

33

2,3-diphosphoglycerate - An organophosphate created in __ during
glycolysis
A. Leukocytes
B. Erythrocytes
C. Thrombocytes
D. AOTA

B

34

Does not cause increase in 2,3-DPG
A.hypoxaemia
B.anaemia
C.septic shock
D.congestive heart failure

C

35

In oximeter, pO2 measurement is amperometric – what does this mean?

that the amount of
current flow is an indication of the oxygen present

36

pCO2 and pH measurements are potentiometric - what does this mean

a
change in voltage indicates the activity of each analyte

37

The actual percent __(O2
d
etermined spectrophotometrically using a CO-oximeter
designed to directly measure the various hemoglobin
species.

A.methemoglobin
B.oxyhemoglobin
C.myoglobin
D.NOTA

b

38

If the specimen is exposed to air, pH (increases, decreases)

Increases

39

If the specimen is RT > 30 min, pH (increases, decreases)

Decreases

40

If the specimen is RT > 30 min, pCO2 (increases, decreases)

Increases

41

If the specimen is exposed to air, pO2(increases, decreases)

Increases