Final answer:
The expected ECG pattern when a thrombus permanently lodges in a coronary artery and the infarction extends through the myocardium from the endocardium to the epicardium is the presence of pathological Q waves, ST-segment elevation, and T-wave inversion. Pathological Q waves indicate permanent damage, ST-segment elevation indicates acute injury, and T-wave inversion indicates myocardial ischemia.
Step-by-step explanation:
When a thrombus permanently lodges in a coronary artery and the infarction extends through the myocardium from the endocardium to the epicardium, the expected electrocardiogram (ECG) pattern is the presence of pathological Q waves, ST-segment elevation, and T-wave inversion. Pathological Q waves are deeper and wider than normal Q waves and indicate permanent damage to the heart muscle. ST-segment elevation is seen when there is acute injury to the heart muscle, and T-wave inversion is a sign of myocardial ischemia or a lack of oxygen supply to the heart.