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The fastest physiological mechanism for acid base correction is
A) bicarbonate buffer system
B) renal system
C) phosphate buffer system
D) respiratory system
A) bicarbonate buffer system
pH
calculation of the presence of
H
Test tip: Hydrogen (H
+
) -> Acid
During aerobic metabolism cells primarily produce
Adenosine triphosphate
Bohr Effect
occurs as a result of CO
2
binding to HgB causing decreased affinity of hemoglibin for oxygen
Test Tip
: Bohr effect -> release of O
2
-> tissue level
Most definitive test for 'shock"
Elevated lactate
normal lactate is 0.7-2.1 mEq/L (
remember Lactate 1-2)
Test tip
: Shock -> Lactate
Lactate>4 ->significant
acidosis -> hyperkalemia
Oxyhemoglobin dissociation curve
R
ight shift:
HbG
R
eleases O
2
R
ight shift caused by;
R
aised temp;
R
aised 2-3 DPG;
R
aised acidosis;
R
educed oxygenation
Oxyhemoglobin dissociation curve
L
eft shift
HgB ho
L
ds O
2
L
eft shift caused by:
L
ow temp;
L
ow 2-3 DPG; a
L
kalosis (
L
ow acidosis);
L
ots of CO
"Fixed acids" are removed by
Renal system only
Cannot be be changed by the bicarbonate buffer system
Haldane effect
is what emables us to remove large amounts of CO
2
Magority of CO
2
is transported by
bicarbonate in plasma
The relationship of EtCO
2
to PaCO
2
should
demonstrate EtCO
2
is slightly lower than PaCO
2
this pressure gradient is what allows CO
2
to be removed from lungs
The relationship of pH, K+, EtCO
2
and PaCO
2
^PaCO
2
10mm Hg ->
V
pH 0.08 (for every change of PaCO
2
10mmHg you will see a change of pH 0.08 in opposite direction)
^ pH 0.1 ->
V
K+ 0.6
(for every change of pH 0.1 you will see a change of K+ 0.^ in opposite direction)
Change in EtCO
2
is about = to change in PaCO
2
Author
kkfuller
ID
30897
Card Set
Flight Medic
Description
Flight Medic Resp. Acid-Base and Vent management
Updated
2010-08-23T17:00:55Z
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