science

Kawashima procedure

Kawashima procedure is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kawashima procedure rather than just read about it. In short: The Kawashima procedure is used for congenital heart disease with a single effective ventricle and an interrupted inferior vena cava (IVC). It was first performed in 1978 and reported in 1984.

Key takeaways

Kawashima procedure belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kawashima procedure to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kawashima procedure from memory before moving on to harder problems.

Reference excerpt

The Kawashima procedure is used for congenital heart disease with a single effective ventricle and an interrupted inferior vena cava (IVC). It was first performed in 1978 and reported in 1984.

Procedure Technically it is very similar to the bidirectional Glenn procedure used to direct half the body's venous blood flow into the lungs. However, in patients with interrupted IVC, most of the blood from the lower body actually joins the blood from the upper body before returning to the heart via the superior vena cava (SVC). Therefore, the redirection of SVC blood to the lungs (as in the Glenn) results in much more than half the venous blood flow being diverted. After Kawashima, the only de-oxygenated blood returning to the heart is from the abdominal organs (via the hepatic veins). As a result, there is much less hypoxia than after Glenn, and the heart is pumping less additional blood than after Glenn. However, the hypoxia can worsen over time (because of the development of microscopic AVMs in the lungs that allow blood to pass through without being oxygenated), and therefore these children still may need a complete Fontan procedure in the end.

References

Worked examples

Example 1 — a first encounter with Kawashima procedure

Start with the simplest possible case. Write down what Kawashima procedure claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kawashima procedure before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kawashima procedure ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kawashima procedure

In research: Kawashima procedure appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Kawashima procedure in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Kawashima procedure is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cardiac surgery, Congenital heart defects, Medical treatment stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Kawashima procedure outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Kawashima procedure in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kawashima procedure means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Kawashima procedure out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kawashima procedure in simple terms?

The Kawashima procedure is used for congenital heart disease with a single effective ventricle and an interrupted inferior vena cava (IVC). It was first performed in 1978 and reported in 1984.

Why does Kawashima procedure matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kawashima procedure?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kawashima procedure.