ECG interpretation involves systematically analyzing the waveforms and intervals to assess heart rhythm, rate, and overall electrical activity. This includes evaluating the P-wave (atrial depolarization), PR interval, QRS complex (ventricular depolarization), ST segment, T-wave (ventricular repolarization), and QT interval. A normal ECG typically shows a regular heart rate (60-100 bpm), normal P-waves, a PR interval between 120-200 ms, a QRS complex duration less than 120 ms, and a normal QT int

👇 ECG and PAC/EAT Localization (Part 3): Inferior Atrium vs. Superior Atrium 👇 •P wave negativ in leads II, III, and aVF: Suggests that the PAC/AT originates in the inferior region of the atrium (consider the CS, CTI, inferior crista terminalis, the inferior region of the TV/MV, or inferior PVs). •P wave positiv in leads II, III, and aVF: Suggests that the PAC/AT originates in the superior region of the atrium (consider the superior crista terminalis, SVC, RAA, LAA, superior pulmonary vein, or