ECMO Specialist Exam Questions with Correct Answers 100% Verified By Experts|2025/2026
Latest Update
How much NS does it take to prime HLS? 500 ml total
1 ft PVC 3/8 in tubing: 20 ml NS
Cardiohelp oxy/pump: 273 ml
Quadrox oxy: 215 ml
Centrimag and Rotaflow pump: 32 ml
Lifespark pump: 16 ml
What is DO2? What four things controls DO2? The amount of oxygen delivered to the
peripheral tissues every minute.
1. cardiac output
2. hgb concentration
3. hgb saturation
4. dissolved oxygen
DO2 formula DO2 = CaO2 x CO x 10*
(10 is constant)
What is a normal DO2? 1000 ml/min
What is VO2? The amount of oxygen being consumed by the tissues each minute.
What 3 things is VO2 determined by? 1. cell metabolism (organ specific)
2. mass & activity
,3. thyroid, hypothalamus, & catecholamines
What is the VO2 formula (oxygen consumption)?
What is a normal VO2? VO2 = CO (SaO2 - SvO2) x Hgb x 1.34 x 10
200-250 ml/min
What factors increase oxygen utilization by tissues? -surgical trauma
-organ failure
-sepsis (50-100%)
-not sedated head injury (138%)
-bath (23%)
-turning (31%)
What is SvO2? Venous Oxygen Saturation
Measure of oxygen content of blood returning to the right side of the heart after perfusing the
entire body
Measures "GLOBAL" O2 consumption and what the body utilized
represents the end result of both oxygen delivery and oxygen consumption at the tissue level
What is a normal SvO2? 65%-75%
or
650-750 ml/min
, SvO2 formula SvO2 = DO2 - VO2
(delivery - consumption)
SvO2 < 50% leads to? anaerobic metabolism and lactic acidosis
What is oxygen that is bound to hemoglobin called?
How many ml of oxygen is on 1 gm of hgb? oxyhemoglobin
1.34 ml
hgb = 1.34 x SaO2
What percentage of oxygen is bound to hgb? 98%
What is the oxygen dissolved in plasma called?
What percentage of oxygen is dissolved in the plasma? PaO2
2%
PaO2 x 0.003
What is the arterial oxygen content formula? CaO2 = [(Hgb x 1.34) x SaO2] + [PaO2 x 0.003]
Latest Update
How much NS does it take to prime HLS? 500 ml total
1 ft PVC 3/8 in tubing: 20 ml NS
Cardiohelp oxy/pump: 273 ml
Quadrox oxy: 215 ml
Centrimag and Rotaflow pump: 32 ml
Lifespark pump: 16 ml
What is DO2? What four things controls DO2? The amount of oxygen delivered to the
peripheral tissues every minute.
1. cardiac output
2. hgb concentration
3. hgb saturation
4. dissolved oxygen
DO2 formula DO2 = CaO2 x CO x 10*
(10 is constant)
What is a normal DO2? 1000 ml/min
What is VO2? The amount of oxygen being consumed by the tissues each minute.
What 3 things is VO2 determined by? 1. cell metabolism (organ specific)
2. mass & activity
,3. thyroid, hypothalamus, & catecholamines
What is the VO2 formula (oxygen consumption)?
What is a normal VO2? VO2 = CO (SaO2 - SvO2) x Hgb x 1.34 x 10
200-250 ml/min
What factors increase oxygen utilization by tissues? -surgical trauma
-organ failure
-sepsis (50-100%)
-not sedated head injury (138%)
-bath (23%)
-turning (31%)
What is SvO2? Venous Oxygen Saturation
Measure of oxygen content of blood returning to the right side of the heart after perfusing the
entire body
Measures "GLOBAL" O2 consumption and what the body utilized
represents the end result of both oxygen delivery and oxygen consumption at the tissue level
What is a normal SvO2? 65%-75%
or
650-750 ml/min
, SvO2 formula SvO2 = DO2 - VO2
(delivery - consumption)
SvO2 < 50% leads to? anaerobic metabolism and lactic acidosis
What is oxygen that is bound to hemoglobin called?
How many ml of oxygen is on 1 gm of hgb? oxyhemoglobin
1.34 ml
hgb = 1.34 x SaO2
What percentage of oxygen is bound to hgb? 98%
What is the oxygen dissolved in plasma called?
What percentage of oxygen is dissolved in the plasma? PaO2
2%
PaO2 x 0.003
What is the arterial oxygen content formula? CaO2 = [(Hgb x 1.34) x SaO2] + [PaO2 x 0.003]
