science

Interventional cardiology

Interventional cardiology 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 Interventional cardiology rather than just read about it. In short: Interventional cardiology is a branch of cardiology that deals specifically with the catheter based treatment of structural heart diseases. Andreas Gruentzig is considered the father of interventional cardiology after the development of angioplasty by interventional radiologist Charles Dotter.

Key takeaways

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

Reference excerpt

Interventional cardiology is a branch of cardiology that deals specifically with the catheter based treatment of structural heart diseases. Andreas Gruentzig is considered the father of interventional cardiology after the development of angioplasty by interventional radiologist Charles Dotter. Many procedures can be performed on the heart by catheterization. This most commonly involves the insertion of a sheath into the femoral artery (but, in practice, any large peripheral artery or vein) and cannulating the heart under X-ray visualization (most commonly fluoroscopy). The radial artery may also be used for cannulation; this approach offers several advantages, including the accessibility of the artery in most patients, the easy control of bleeding even in anticoagulated patients, the enhancement of comfort because patients are capable of sitting up and walking immediately following the procedure, and the near absence of clinically significant sequelae in patients with a normal Allen test. Downsides to this approach include spasm of the artery and pain, inability to use larger catheters needed in some procedures, and more radiation exposure. But, in recent times radial approach is getting popularity due to its patient comfort after procedure. The main advantages of using the interventional cardiology or radiology approach are the avoidance of the scars and pain, and long post-operative recovery. Additionally, interventional cardiology procedure of primary angioplasty is now the gold standard of care for an acute myocardial infarction. It involves the extraction of clots from occluded coronary arteries and deployment of stents and balloons through a small hole made in a major artery, which has given it the name "pin-hole surgery" (as opposed to "key-hole surgery").

Procedures

Angioplasty is an intervention to dilate either arteries or veins. Percutaneous coronary intervention (PCI/Coronary angioplasty) the use of angioplasty for the treatment of obstruction of coronary arteries as a result of coronary artery disease. A deflated balloon catheter is advanced into the obstructed artery and inflated to relieve the narrowing; certain devices such as coronary stents can be deployed to keep the blood vessel open. Various other procedures can also be performed at the same time. After a heart attack, it can be restricted to the culprit vessel (the one whose obstruction or thrombosis is suspected of causing the event) or complete revascularization; complete revascularization is more efficacious in terms of major adverse cardiac events and all-cause mortality.PCI is also used in people after other forms of myocardial infarction or unstable angina where there is a high risk of further events. The use of PCI in addition to anti-angina medication in stable angina may reduce the number of patients with angina attacks for up to 3 years following the therapy, but it does not reduce the risk of death, future myocardial infarction, or need for other interventions. Valvuloplasty It is the dilation of narrowed cardiac valves (usually mitral, aortic, or pulmonary). Congenital heart defect correction Percutaneous approaches can be employed to correct atrial septal and ventricular septal defects, closure of a patent ductus arteriosus, and angioplasty of the great vessels. Percutaneous valve replacement An alternative to open heart surgery, percutaneous valve replacement is the replacement of a heart valve using percutaneous methods. This is performed on the aortic valve (percutaneous aortic valve replacement/TAVI procedure), pulmonary valve and recently the mitral valve Percutaneous valve repair An alternative to open heart surgery, percutaneous valve repair is performed on the mitral valve using the MONARC system or MitraClip system Coronary thrombectomy Coronary thrombectomy involves the removal of a thrombus (blood clot) from the coronary arteries. Open heart surgery of the heart is performed by a cardiothoracic surgeon. Some interventional cardiology procedures are performed in conjunction with a cardiothoracic surgeon.

Occupational hazards There are a number of occupational hazards associated with interventional cardiology procedures. Since both interventional cardiologists and electrophysiologists work in close proximity to the patient, and therefore close to the ionising radiation source used in imaging, they are exposed to radiation under their normal working conditions. To mitigate the radiation hazard, a number of shielding methods may be employed, such as lead aprons, screens, eyewear and thyroid shields, which considerably reduce radiation doses to key organs when properly used. However, the considerable mass of these devices can also cause risks to health, particularly in terms of lower back pain.

Education In the US and Canada, interventional cardiology requires a minimum of seven years of post-graduate medical education and up to 9 years of post-graduate medical education for those wanting to perform advanced structural heart procedures.

Undergraduate degree (4 years) Medical degree (4 years) Internal Medicine residency (3 years) Cardiology fellowship (3 years) Interventional Cardiology fellowship (1–2 years) Structural Heart Intervention fellowship (1 year)

See also Interventional radiology Vascular surgery Catheter Cannula Stent Restenosis

References

External links Society for Cardiovascular Angiography & Interventions Angioplasty.Org European Association of Percutaneous Cardiovascular Interventions (EAPCI) Interventional Portal: Relevant links for interventional cardiologists Interventional Cardiology Review

Illustrations

Worked examples

Example 1 — a first encounter with Interventional cardiology

Start with the simplest possible case. Write down what Interventional cardiology 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 Interventional cardiology 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 Interventional cardiology 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 Interventional cardiology

In research: Interventional cardiology 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 Interventional cardiology 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: Interventional cardiology is common in secondary-school and first-year university syllabi. It links to neighbouring topics Interventional cardiology, so understanding it makes those chapters shorter.
In everyday life: Look for Interventional cardiology 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 Interventional cardiology in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Interventional cardiology 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 Interventional cardiology out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Interventional cardiology in simple terms?

Why does Interventional cardiology 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 Interventional cardiology?

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 Interventional cardiology.