Carbon Dioxide Transport in Blood

Basic Science and Pathophysiology

3 Topics

Carbon Dioxide and the Amino Group

Carbon Dioxide Release

Proton Buffering

Clinical Assessment and Risk Stratification

3 Topics

Carbon Dioxide and Acid-Base Balance

Assessment and Stratification

Metabolic Alkalosis

3 Topics

1 Topic

carbon Dioxide Transport in the Blood – Post Test

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Case 1

Carbon Dioxide Transport in Blood Clinical Cases Case 1

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Question 1 of 2

1. Question
An ABG was done whilst the patient was on a non-rebreathe mask with 15L/min of oxygen.

Which of the following are true regarding the ABG?
- The picture suggests a pure metabolic acidosis without respiratory compensation
- The elevated carboxyhaemoglobin is the cause of his obtundedness and hyperbaric O2 should be arrange immediately
- There is a respiratory acidosis
- The patient is just hypoxic and correcting the oxygen deficit is all that's required to return him to acid base equipoise
- An anion gap of 16.6 mmol/L indicates renal tubular acidosis is a considered diagnosis in this scenario
Correct

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Question 2 of 2

2. Question
His airway is not at risk, and supplemental oxygen is applied; his pulse oximetry rises from 88% on air to 93% on 15 litres of oxygen administered via a reservoir mask.

His arterial blood gas analysis on supplemental oxygen is as follows:
pH = 7.35
pO2 = 11 kPa
pCO2 = 5.0 kPa
HCO3- = 23 mmol/l
Base excess = -2
Lactate = 2.7 mmol/l

This is consistent with a presentation of acute pulmonary oedema: True or False?
- True
- False
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