Syllabus · Current · V5 (2025) · Cardiovascular System

D1 · Cardiovascular Anatomy

D1.iii · Cardiac Conduction System

Official V5 objective
Describe the structure of the excitatory elements of the heart including: a. Sino-atrial node, b. Atrio-ventricular node, c. Bundle of His, d. Purkinje Fibres. e. anatomical course of conduction.
2 SAQ topics 4 SAQ appearances 1 VIVA station

Written examination

SAQ history

4 appearances
(a) Describe the action potential of the cardiac pacemaker cells including the ionic events (60%). (b) Explain how excitation then propagates through the conducting pathway of the heart, including mechanisms to prevent abnormal conduction (40%).
69%
Outline normal impulse generation and conduction in the heart. Describe the features present in a normal heart that prevent generation and conduction of arrhythmias.
33%
RV vs LV Anatomy
2 exam appearances
Outline the anatomy of the cardiac ventricles including the chambers, valves and conduction elements.
11%
Compare the structure, function and coronary circulation of the right and left ventricles.
27%

Oral examination

VIVA history

1 station

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