12LeadEKG
The 12-lead electrocardiogram (12-lead ECG or EKG) is a noninvasive test that records the heart's electrical activity from 12 distinct views using a set of surface electrodes. It provides a concise snapshot of rhythm, rate, conduction, and the heart’s electrical axis.
Six limb leads (I, II, III, aVR, aVL, aVF) and six precordial leads (V1–V6) are placed on
The recording typically lasts about 10 seconds and is displayed as waveforms with measurable intervals, such
Clinically, a 12-lead ECG is used to detect myocardial ischemia or infarction, arrhythmias, conduction delays, electrolyte
Interpretation involves assessing rate and rhythm, looking for axis deviation, and evaluating the morphology of waves
Limitations include susceptibility to artifacts and electrode misplacement, and the inability to detect certain conditions (e.g.,
The 12-lead ECG is a safe, rapid, and standardized tool widely used in clinical practice to assess