Syllabus · Current · V5 (2025) · Cardiovascular System

D3 · Determinants and Control of Cardiac Output

D3.viii · Venous Oxygen Saturation

Official V5 objective
Describe the factors that affect central venous and mixed venous oxygen saturation.
2 SAQ topics 4 SAQ appearances 0 VIVA stations

Written examination

SAQ history

4 appearances
2021B Q13
Describe the factors that affect mixed venous oxygen saturation.
49%
2017A Q19
Define mixed venous PO2 (20% of marks). Outline the factors that affect this value (80% of marks).
37%
2008A Q10
Briefly describe the factors that influence the partial pressure of Oxygen in mixed venous blood.
33%
2019A Q08
Compare and contrast the measurement (40% of marks) and interpretation (60% of marks) of both central venous and mixed venous oxygen saturations.
8%

Oral examination

VIVA history

0 stations

No mapped VIVA history for this objective.

Sources: objective text from the relevant CICM syllabus; historical SAQ and VIVA wording from CICM examiner reports.