ABG FINAL EXAM SOLVED COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
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Course
ABG
Institution
ABG
ABG FINAL EXAM SOLVED COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
1. What does the steep part of the oxy Hb curve represent? - ANSWER between 10 and 60mmHg- this is where O2 will rapidly bind with
Hb
2. What factors affect the oxy Hb diss. Curve? - ANSWER c...
ABG FINAL EXAM SOLVED COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
1. What does the steep part of the oxy Hb curve represent?
- ANSWER between 10 and 60mmHg- this is where O2 will rapidly bind with
Hb
2. What factors affect the oxy Hb diss. Curve?
- ANSWER changes with temp, CO2, 23DPG and PH.
3. A decreased affinity means?
- ANSWER A left shift- temp, 23 dpg or CO2 decreases, this leads to an
increase in PH
4. How does a decrease or increase in 23 DPG change the Oxy Hb diss. curve?
- ANSWER a increase in DPG will increase affinity where a decrease will
decrease affinity.
5. CaO2 equation and normal value - ANSWER
1. [1.34 X (Hb) x (SaO2) + 0.003 x PaO2]
17-20 vol %
6. CVO2 equation and normal value - ANSWER
1. CVO2= 1.34 x Hb x SvO2 +(Pvo2X0.003)
12-17 vol%
7. Ca-VO2 normal value
- ANSWER 3-5 vol %
8. Types of hypoxemia - ANSWER
,Anemic
stagnant/circulatory,
histotoxic
hypoxemic
9. How can you tell the difference between cardigenic and non-cardiogenic
pulmonary edema - ANSWER
Cardiogenic has an increased pulmonary capillary wedge pressure greater than
25/10
non-cardiogenic is due to another pulmonary cause.
10. Treatment for cardiogenic pulmonary edema - ANSWER
. optimize venous return with drug intervention. Diuretics, afterload reduction
(nitro) CPAP, correct underlying cause.
11. Criteria for diagnosing ARDS - ANSWER
bilateral opacities
PF ratio less than 300
High peep level (10-20cmH2O)
12. Treatment for ARDS - ANSWER
Low Vt
Pplat less than 30
High peep levels
permissive hypercapnia
13. Effects of PEEP therapy - ANSWER
alveolar recruitment
increased alveolar oxygenation
reduction in capillary shunting
14. Signs and symptoms of hypoxia - ANSWER
muscular incoordination
confusion
, loss of judgement
restless
combative
Peripheral vasoconstriction
cyanosis
KIDS= Bradycardia
Adults: tachycardia
15. Causes of anemic hypoxia - ANSWER
blood loss, anemia, carbon monoxide poisoning. inadequate or abnormal RBC
production (insufficient erythropoietin, folic acid, B12, bone marrow failure)
treatment for anemic hypoxia
PRBC, Erythropoietin, HBO (hyperbaric oxygen chamber) Hydroxurea (increased
fetal Hb)
causes for circulatory hypoxia
inadequate Qt, low BP, low Pulse pressure, decreased perfusion time abnormally
low SVR
treatment options for circulatory hypoxia
Positive inotropes, vasodilators, vasoconstrictors, increased preload, anti-
arrhythmics
Differential dx of hypoxic hypoxia
Clinical manifestations of respiratory acidosis
. Irritable, anxiety, lethargy, stupor or coma, PaCO2 greater than 70mmHg,
respiratory distress, increased cerebral perfusion, increased Qt, and tachycardia,
flushed warm skin, diaphoresis
what is the target PaCO2 for a COPD patient?
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