Cardiovascular Disease & Dental Management

3.5. An INR < ~3.5 typically allows simple extractions without stopping warfarin.

Only high-risk cardiac conditions. Only high-risk cardiac conditions warrant prophylaxis.

Continued (not stopped). Aspirin is usually continued; local haemostasis suffices.

⭐ High-Yield Facts for Exam

Infective endocarditis (IE) prophylaxis — only high-risk cardiac conditions (e.g., prosthetic valve, previous IE) before invasive/gingival-manipulating procedures: amoxicillin 2 g 1 h before.
Anticoagulated (warfarin) patients — simple extractions are generally safe if INR < ~3.5; do not routinely stop warfarin.
Antiplatelets (aspirin) — usually not stopped for routine dental extractions.
Hypertension — defer elective care if BP is very high (e.g., ≥180/110); limit epinephrine and ensure stress reduction.

IE prophylaxis = high-risk only; extraction safe if INR <~3.5; don't stop aspirin routinely; defer if BP ≥180/110.

Q1. Simple dental extraction is generally safe in a warfarin patient if INR is below about:

A. 1.5

B. 2.0

C. 3.5

D. 5.0

Show Answer

✅ Answer: C

An INR < ~3.5 typically allows simple extractions without stopping warfarin.

Q2. IE antibiotic prophylaxis is indicated for:

A. All patients

B. Only high-risk cardiac conditions

C. Healthy adults

D. Children only

Show Answer

✅ Answer: B

Only high-risk cardiac conditions warrant prophylaxis.

Q3. For routine extractions, low-dose aspirin should generally be:

A. Stopped 1 week before

B. Continued (not stopped)

C. Doubled

D. Replaced with warfarin

Show Answer

✅ Answer: B

Aspirin is usually continued; local haemostasis suffices.

📧 Get Free NEET MDS MCQs in Your Inbox

50 high-yield MCQs + mnemonics + AI study tips — completely free

No spam. Unsubscribe anytime.