ABG interpretation Questions and Answers
(100% Correct Answers) Already Graded A+
Causes of metabolic acidosis [ Ans: ] DKA, fistula
Metabolica acidosis ABG [ Ans: ] Low pH <7.35
Low Co2
Causes of respiratory alkylosis [ Ans: ] Type 1 resp failure
PE
Pneumonia
asthma
You are asked to review a 63 year old female who was
admitted with shortness of breath. On your arrival the
patient appears drowsy and is on 4L of oxygen via nasal
cannulae. You perform an ABG and receive the following
results...
PaO2: 20 (11-13 kPa)
pH: 7.29 (7.35 - 7.45)
PaCO2: 9.1 (4.7-6.0 kPa)
HCO3-: 26 (22-26 mEg/L)
, Base excess: +1 (-2 to +2) [ Ans: ] Respiratory acidosis
A 17 year old patient presents to A&E complaining of a
tight feeling in their chest, shortness of breath, some
tingling in their fingers and around their mouth. They
have no significant past medical history and are not on
any regular medication. An ABG is performed on the
patient whilst they're breathing room air and the results
are shown below...
PaO2: 14 (11-13 kPa)
pH: 7.49 (7.35 - 7.45)
PaCO2: 3.2 (4.7-6.0 kPa)
HCO3-: 22 (22-26 mEg/L)
BE: +2 (-2 to +2) [ Ans: ] Respiratory alkalosis
An 48 year old male has been admitted with a 24hr history
of abdominal distention and profuse vomiting. A CT scan
reveals a large mass causing bowel obstruction. As part of
the patient's assessment the surgical registrar requested
that you check his blood gas (on air), with the results
shown below...
PaO2: 12.7 (11-13 kPa)
pH: 7.50 (7.35 - 7.45)
PaCO2: 5.5 (4.7-6.0 kPa)
(100% Correct Answers) Already Graded A+
Causes of metabolic acidosis [ Ans: ] DKA, fistula
Metabolica acidosis ABG [ Ans: ] Low pH <7.35
Low Co2
Causes of respiratory alkylosis [ Ans: ] Type 1 resp failure
PE
Pneumonia
asthma
You are asked to review a 63 year old female who was
admitted with shortness of breath. On your arrival the
patient appears drowsy and is on 4L of oxygen via nasal
cannulae. You perform an ABG and receive the following
results...
PaO2: 20 (11-13 kPa)
pH: 7.29 (7.35 - 7.45)
PaCO2: 9.1 (4.7-6.0 kPa)
HCO3-: 26 (22-26 mEg/L)
, Base excess: +1 (-2 to +2) [ Ans: ] Respiratory acidosis
A 17 year old patient presents to A&E complaining of a
tight feeling in their chest, shortness of breath, some
tingling in their fingers and around their mouth. They
have no significant past medical history and are not on
any regular medication. An ABG is performed on the
patient whilst they're breathing room air and the results
are shown below...
PaO2: 14 (11-13 kPa)
pH: 7.49 (7.35 - 7.45)
PaCO2: 3.2 (4.7-6.0 kPa)
HCO3-: 22 (22-26 mEg/L)
BE: +2 (-2 to +2) [ Ans: ] Respiratory alkalosis
An 48 year old male has been admitted with a 24hr history
of abdominal distention and profuse vomiting. A CT scan
reveals a large mass causing bowel obstruction. As part of
the patient's assessment the surgical registrar requested
that you check his blood gas (on air), with the results
shown below...
PaO2: 12.7 (11-13 kPa)
pH: 7.50 (7.35 - 7.45)
PaCO2: 5.5 (4.7-6.0 kPa)
