Electrocardiogram QRS Complex Shortened by ECG Finding

**Semantic type:** Finding

**Definition:** A QRS complex that is less than 120 milliseconds on electrocardiogram, reflexing rapid activation of the ventricles via the normal His-Purkinje system. It may indicate the presence of an arrhythmia originating above or within the His bundle.

**Synonyms:** - Electrocardiogram QRS Complex Shortened - Electrocardiogram QRS Complex Shortened by EKG Finding