1. Spectrum of Acute Coronary Syndromes: Laboratory Findings in Q-Wave AMI Creatine kinase evidence of necrosis NonePositive ECG early ST-segment depression and/or T-wave inversion ST-segment elevation ECG late No Q Q develops Stable angina UnstableanginaNon–Q-waveAMIQ-waveAMI Antman EM. In: Braunwald E, ed. Heart Disease: A Textbook in Cardiovascular Medicine, 5th ed. Philadelphia, Pa: WB Saunders; 1997. ST-segment depression and/or T-wave inversion

2. Time Course of Enzyme Markers 1000 100 10 1 0 Relative Marker Increase Hours After Chest Pain Onset Upper Reference Interval Antman EM. In: Braunwald E, ed. Heart Disease: A Textbook in Cardiovascular Medicine, 5th ed. Philadelphia, Pa: WB Saunders; 1997.

3. Diagnostic Markers in Acute Coronary Syndromes Stable angina Unstable angina Non–Q-wave AMI Q-waveAMIQ-waveAMI ST-segment elevation AMI CK-MB Troponin T or I C-Reactive Protein Non–ST-segment elevation ACS Antman EM. In: Braunwald E, ed. Heart Disease: A Textbook in Cardiovascular Medicine, 5th ed. Philadelphia, Pa: WB Saunders; 1997.