Segments
Results:
ST Depression V1-V4: OMI Pattern
Key Points: Posterior OMI can hide on the standard 12-lead. Acute posterior coronary occlusion may produce no diagnostic ST elevation in the conventional leads. Instead, posterior ST elevation is seen…
Waveforms, Segments, & Intervals: Basics
Key Points: Every ECG tracing is built from waveforms (deflections), segments (baseline portions between waveforms), and intervals (time that include waveforms plus segments). Waveforms describe electrical events (depolarization or repolarization)….
ST Segment: Basics
Key Points: The ST segment extends from the J point, where the QRS complex ends, to the beginning of the T wave. It represents the period after ventricular depolarization when…
PR Segment: Basics
Key Points Definition: The PR segment is the flat line from the end of the P wave to the beginning of the QRS. It reflects conduction through the AV node,…
TP Segment: Basics
Key Points Definition: The TP segment is the isoelectric interval from the end of the T wave to the start of the P wave. It reflects electrical diastole when the…
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