Mild to moderate systemic disease corresponds to which ASA class?

• A. ASA I
• B. ASA II
• C. ASA III
• D. ASA IV

Answer: (B)

Mild to moderate systemic disease corresponds to ASA II. The ASA physical status classification is used to gauge a patient’s preoperative medical burden. ASA I is a healthy patient with no systemic disease. ASA II covers mild systemic disease or risk factors that do not significantly limit daily activities, such as well-controlled hypertension or diabetes without end-organ damage, or a smoker without active cardiopulmonary disease. ASA III refers to severe systemic disease that limits activity but is not incapacitating, and ASA IV describes severe, life-threatening systemic disease. So the phrase “mild to moderate systemic disease” fits ASA II best.