ADC Practice Question — Latex Sensitivity

Mrs Martinez's chlorhexidine allergy, why is…

Infection control in the ADC exam tests decision-making around exposure incidents, instrument classification, and decontamination protocols. This exam-level vignette tests your ability to work through clinical details and arrive at the correct management.

Mrs Angela Martinez (48F) presents for periodontal treatment including subgingival scaling and debridement. Her medical history reveals a documented allergy to latex (Type 1 hypersensitivity) and a previous allergic reaction to chlorhexidine mouthwash. During the procedure, the dental assistant accidentally drops a loaded anaesthetic syringe into the sharps container and then notices the sharps container is above the three-quarter fill line. Given Mrs Martinez's chlorhexidine allergy, why is subgingival irrigation with chlorhexidine during periodontal debridement particularly dangerous?

A. Chlorhexidine is ineffective against subgingival bacteria
B. Chlorhexidine causes staining of subgingival tooth surfaces
C. Chlorhexidine on bleeding sites can access systemic circulation, triggering anaphylaxis via IgE-mediated mast cell degranulation
D. Chlorhexidine interacts with local anaesthetic agents

ADC revision is a must, hence Reviz is a must

The only ADC prep platform where every answer is traced to the guideline source.

No invented explanations. No guesswork content. Every question mapped to Therapeutic Guidelines, Odell's, IADT, and more — so you study what the exam actually tests.

7,000+

Practice questions

All 4

ADC papers covered

Every

Answer cited

🤖

Remy — your AI tutor on WhatsAppRemy figures out what you're getting wrong and keeps hitting those topics until you stop getting them wrong. Like a tutor who remembers every mistake you've ever made.

🔄

You won't forget what you studiedGot a question wrong last week? Remy brings it back — right when you're about to forget it. The more you get right, the less it repeats. The stuff you struggle with keeps coming back until it sticks.

🎯

Know exactly where you're weakSee your score for every topic — Antimicrobials, Trauma, Anaesthesia, all of them. No more guessing what to study next. Remy builds your daily quiz from the gaps.

📱

Study on WhatsApp, review on the webYour daily quiz arrives right on WhatsApp — no app to download, no website to remember. Open WhatsApp, answer questions, done. Check detailed progress anytime on the web dashboard.

📖

Don't trust the answer? Look it up.Every explanation tells you the book, the edition, and the page number. If something doesn't feel right, you can verify it yourself in 30 seconds. No other platform does this.

⏰

Daily quizzes, your time, your timezoneRemy sends questions at the time you pick, in your timezone. You don't have to remember to study — Remy shows up every day. Consistency becomes automatic.

🔥 The Remy Challenge

Score high, pay less.

Think you already know your stuff? The Remy Challenge: 15 questions, one attempt — 13 timed and marked, plus 2 interactive finishers. Your score sets your discount — top scores take 50% off any plan, strong scores 30%, and every challenger leaves with at least 20%, locked for 72 hours.

Take the Remy Challenge

✅ No signup needed

Try Reviz on WhatsApp.

Message Remy and get one cited clinical question every morning — free until the day you sit. No card details, no forms, no app to download. Just open WhatsApp and start practising.

Message Remy on WhatsApp

Sources cited

Therapeutic Guidelines v4 Odell's 3rd & 4th Ed IADT 2020 Code of Conduct CMS (Evans) Infection Control + more

Show the answer and cited explanation

Correct answer: C

Chlorhexidine has two identical epitopes that can cross-link IgE antibodies on mast cells and basophils, causing degranulation and histamine release with potential anaphylaxis. The greatest risk is when chlorhexidine gains access to the systemic circulation. Therefore, chlorhexidine rinses, irrigants or gels should NOT be applied onto bleeding sites such as during subgingival irrigation or into extraction sites. (ICG p.79)

Source: ICG Section H: Chlorhexidine Allergy

Remy's study tip — The differentiator is usually the Spaulding classification level or the step order in a protocol.

Exam preparation FAQ

How should I prepare for Infection Control in the ADC exam?

Build competence across all topics. The exam tests application of guidelines to clinical scenarios, not memorisation.

How do I approach an unfamiliar Latex Sensitivity vignette?

Extract key clinical data from the stem before reading options. There are usually 3–4 critical variables that determine the correct answer.

Every answer, traced to the source.

Remy — the AI tutor inside Reviz — drills you on 7,000+ ADC-style cited questions with spaced repetition, on WhatsApp and the web.

Start with 10 free questions

Mrs Martinez's chlorhexidine allergy, why is…

The only ADC prep platform where every answer is traced to the guideline source.

Score high, pay less.

Try Reviz on WhatsApp.

Exam preparation FAQ

Every answer, traced to the source.

You're on a roll.