MMSC 407 Clinical Chem Exam 3 (just acid base) Questions
With Complete Solutions
(indicator electrode) mineral content for pH *hydrogen*
sensitive glass: Correct Answers SiO2: 72.2%
Na2O: 21.4%
CaO: 6.4%
(indicator electrode) mineral content for pH *sodium* sensitive
glass: Correct Answers SiO2: 72%
Na2O: 11%
Al2O3: 18%
Acid Classification Correct Answers ph less than 7.40
pCO2 higher than 45
HCO3 less than 21
Alkaline classification Correct Answers ph greater than 7.40
pCO2 less than 35
HCO3 greater than 28
Allen Test Correct Answers check radial artery circulation
before drawing
drawing complications:
-thrombosis
-hemorrhage (must hold site for 15 minutes)
,Take immediately to the lab and run within 30 minutes
Asthma Correct Answers swollen or inflamed bronchi
reduced gas exchange
Base Excess [calculated parameter] Correct Answers
concentration of titratable base when titrating the blood or
plasma with a strong acid or base to a plasma ph of 7.40 at a
pCO2 of 40mmHg at 37c
Base excess values Correct Answers reference value: (-)2.5 to
(+)2.5 mmol/L
(+) values: Base excess
(-) values = base deficit
estimates amount of sodium bicarbonate to be given to correct
pH problems
*.1 x [base excess] x patient weight (Kg) *
Blood collection process (arterial sample) Correct Answers
patient must not begin to hyperventilate due to anxiety or pain
timing of collection should be appropriate to treatment regimens
syringe and needle (heparin)
, not less than 45 degree angle
anaerobic collection
mix well before analyzing
NO tourniquet
radial or brachial arteries
Blood pCO2 Correct Answers reference values:
-arterial: 35-45
mmHg
-Venous: 38-50 mmHg
respiratory component of acid base balance
regulated by lungs
Blood pO2 reference values Correct Answers arterial: 83-108
mmHg
-decreased with age and high altitudes
venous: <40 mmHg
Bronchopneumonia: Correct Answers fluid accumulation leads
to a barrier against gas diffusion
Buffered Base [Calculated parameter] Correct Answers sum of
concentration of all buffer anions in blood
With Complete Solutions
(indicator electrode) mineral content for pH *hydrogen*
sensitive glass: Correct Answers SiO2: 72.2%
Na2O: 21.4%
CaO: 6.4%
(indicator electrode) mineral content for pH *sodium* sensitive
glass: Correct Answers SiO2: 72%
Na2O: 11%
Al2O3: 18%
Acid Classification Correct Answers ph less than 7.40
pCO2 higher than 45
HCO3 less than 21
Alkaline classification Correct Answers ph greater than 7.40
pCO2 less than 35
HCO3 greater than 28
Allen Test Correct Answers check radial artery circulation
before drawing
drawing complications:
-thrombosis
-hemorrhage (must hold site for 15 minutes)
,Take immediately to the lab and run within 30 minutes
Asthma Correct Answers swollen or inflamed bronchi
reduced gas exchange
Base Excess [calculated parameter] Correct Answers
concentration of titratable base when titrating the blood or
plasma with a strong acid or base to a plasma ph of 7.40 at a
pCO2 of 40mmHg at 37c
Base excess values Correct Answers reference value: (-)2.5 to
(+)2.5 mmol/L
(+) values: Base excess
(-) values = base deficit
estimates amount of sodium bicarbonate to be given to correct
pH problems
*.1 x [base excess] x patient weight (Kg) *
Blood collection process (arterial sample) Correct Answers
patient must not begin to hyperventilate due to anxiety or pain
timing of collection should be appropriate to treatment regimens
syringe and needle (heparin)
, not less than 45 degree angle
anaerobic collection
mix well before analyzing
NO tourniquet
radial or brachial arteries
Blood pCO2 Correct Answers reference values:
-arterial: 35-45
mmHg
-Venous: 38-50 mmHg
respiratory component of acid base balance
regulated by lungs
Blood pO2 reference values Correct Answers arterial: 83-108
mmHg
-decreased with age and high altitudes
venous: <40 mmHg
Bronchopneumonia: Correct Answers fluid accumulation leads
to a barrier against gas diffusion
Buffered Base [Calculated parameter] Correct Answers sum of
concentration of all buffer anions in blood
