Final answer:
ECG changes seen in acute coronary syndrome include an amplified P wave, an enlarged Q wave, flatter T waves, and ST segment elevation or depression, which are indicative of various cardiac conditions such as atrial or ventricular enlargement and myocardial infarction.
Step-by-step explanation:
The ECG changes seen in acute coronary syndrome (ACS), such as myocardial infarction (MI), include various diagnostic measures. Among these are alterations in the P wave, Q wave, ST segment, and T waves. An amplified P wave can indicate atrial enlargement, while an enlarged Q wave suggests a myocardial infarction. Ventricular enlargement is often indicated by an enlarged suppressed or inverted Q wave. When the myocardium is not receiving enough oxygen, T waves may appear flatter. A significant sign of an acute MI is an elevation of the ST segment above the baseline, and ST segment depression may occur with hypoxia. Moreover, comparing a recent ECG to an older one can reveal subtle changes due to slight or gradual heart damage, demonstrating the importance of historical ECG records for diagnosis. Advanced ECG technology enables portable monitoring, which is especially useful in emergency situations or remote patient care.