clinical guidelines

The 12-lead electrocardiogram (ECG) serves as a fundamental diagnostic tool in cardiology, providing crucial information about cardiac electrical activity from multiple angles. Proper electrode placement is essential for accurate ECG interpretation and diagnosis of various cardiac conditions. This guide outlines precise positioning of both precordial (chest) and limb leads according to standardized protocols.

This medical illustration compares normal oropharyngeal anatomy with pathological changes observed in acute tonsillitis. The diagram highlights key anatomical structures and inflammatory manifestations affecting the tonsillar region.