A patient sustained a myocardial infarction 8 months ago and has no current symptoms. What is the most appropriate ASA physical status classification?

Correct answer: B. ASA III

• A. Incorrect. ASA IV applies to an MI within the last 3–6 months, or ongoing ischemia/unstable angina. Elective care is deferred.
• B. Correct per standard dental teaching (Malamed). Most patients with a history of MI more than 6 months prior are classified ASA III — a 'yellow flag' requiring stress reduction protocol and treatment modification.
• C. Defensible in a narrow circumstance. Malamed notes that where there is little or no residual myocardial damage, the patient MAY be reclassified ASA II after 6 months — but ASA III is the default answer.
• D. Incorrect. ASA I is a normal healthy patient with no systemic disease.

Note: 📌 Know the timeline: MI <6 months (some references say <3 months) = ASA IV, defer elective care. MI >6 months, asymptomatic = ASA III (ASA II only if no residual myocardial damage).