← All decks
The first 25 slides, exactly as they appear. The full deck has 41 content slides.
Radiology
Double-Inlet Single Ventricle
Built from Obstetric Imaging
What’s inside
7 sections · 41 slides
Overview
- What you will learn here
Start with the normal heart
You can only see what is missing if you know what should be there.
- The heart is two pumps side by side
- The two inlet valves seen from above
What the anomaly is
Two collecting rooms, but only one pump behind them.
- Two atria emptying into one pump
- The formal definition
- The spare chamber that does no work
- What this label does NOT include
- One ventricle, one or two inlet valves
- 2%–3%
- Why it is taken seriously
The anatomy and its variations
One label, a very wide range of hearts underneath it.
- Where the plumbing goes wrong
- One name, many shapes
- The pattern you will meet most often
- What often travels with it
- Other problems in the heart and body
- Genetic conditions reported with it
Seeing it on ultrasound
The four-chamber view does most of the work.
- When it is usually picked up
- How to work through the heart
- Four-chamber view with a single ventricle
- Reading the labelled image
- Colour Doppler flow through both inlet valves
- What colour Doppler adds
- Naming the single ventricle is hard
- The outflows are usually abnormal too
- “
The look-alikes
Four other hearts can show you what looks like one ventricle.
- What else must be ruled out
- Four hearts that can fool you
- Look-alike one: hypoplastic left heart
- Look-alike two: hypoplastic right heart
- Look-alike three: unbalanced AV canal
- Look-alike four: a wide septal defect
What happens after diagnosis
Nothing before birth; a rerouting operation after it.
- Before birth
- The problem one pump creates
- The logic of the repair
- What the Fontan operation does
- 20%–30%
- What the referring physician needs to know
- Key points to carry away
- References
- Suggested reading
- Obstetric Imaging: Fetal Diagnosis and Care, 2nd Edition