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Abstract Premature ventricular contraction (PVC) and ventricular tachycardia originated from His bundle can be easily misdiagnosed since their QRS morphology is similar to that of conducted sinus beats. Combined with surface ECG and intracadiac electrogram, this paper analyzes the ECGs of PVC and ventricular tachycardia originated from His bundle, and summarizes the ECG characteristics of ventricular arrhythmias originated from His bundle.
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