Abbreviation Meaning; M: murmur (heart murmur or heart attack that can cause death) MACE: Major Adverse Cardiovascular Events: MAC: Mycobacterium avium complex: MAE: moves all extremities: MAHA: microangiopathic hemolytic anemia: MAL: midaxillary line: MALT: mucosa-associated lymphoid tissue: MANOS: minilaparoscopy assisted natural orifice surgery: MAOI: monoamine oxidase inhibitor