Infective endocarditis (IE) prophylaxis is a classic "NICE vs. the world" topic that frequently pops up in exams. While international guidelines (like ESC or AHA) often recommend antibiotics for high-risk patients undergoing dental procedures, NICE guidance (CG64) takes a much more conservative approach in the UK.

I'll pull up some high-yield lessons to help you master these specific criteria.

It's important to remember that NICE is quite firm: routine antibiotic prophylaxis is not recommended for dental or non-dental procedures (like GI or GU scopes), regardless of the patient's risk level. Instead, the focus is on maintaining excellent oral health and recognizing symptoms early.

Let's get some flashcards to help you lock in those "increased risk" categories, as they are frequently tested.

While routine prophylaxis is off the table, you still need to identify patients at increased risk of IE. These patients should be advised to maintain good oral hygiene and report any symptoms of infection (like persistent fever) immediately.

I'll find a table that summarizes these risk groups for you.

The NICE guidance (CG64) is very specific about which patients are at "increased risk." Even for these patients, routine antibiotic prophylaxis is not recommended for dental or non-dental procedures.

I've put together a summary of these risk groups and the key management points for you.

The key takeaway for your UKMLA AKT is that NICE (CG64) does not recommend routine antibiotic prophylaxis for dental or non-dental procedures, even for high-risk patients.

Who is at "Increased Risk"?

NICE defines the following groups as being at increased risk of developing IE:

• Acquired valvular heart disease (stenosis or regurgitation)
• Hypertrophic cardiomyopathy
• Previous infective endocarditis
• Structural congenital heart disease (excluding isolated ASD, fully repaired VSD/PDA, or closed secundum ASD)
• Valve replacement (prosthetic valves)

The NICE Approach

Instead of antibiotics, the focus is on:

1. Oral Health: Encouraging excellent dental hygiene and regular check-ups.
2. Patient Education: Advising patients on the symptoms of IE (like persistent fever, flu-like symptoms, or weight loss) and when to seek medical help.
3. Prompt Investigation: Any infection in these patients should be investigated and treated promptly to reduce the risk of bacteremia.

Exam Tip: In 2016, NICE added a small amendment stating that prophylaxis could be considered on an individual basis for high-risk patients undergoing high-risk procedures, but for exam purposes, the answer is almost always "no routine prophylaxis."

If you're feeling confident with the theory, would you like to try a few practice questions to see how this is tested in the AKT?