Ventricular fibrillation appears to be a newly identified diagnosis among Sen. John Fetterman’s ongoing medical issues, disclosed after a fall on Thursday sent the Pennsylvania Democrat to the ...

Despite advances in defibrillation technology, shock-refractory ventricular fibrillation remains common during out-of-hospital cardiac arrest. Double sequential external defibrillation (DSED; rapid ...

Narrow QRS complexes occur regularly. This tracing suggests either atrial flutter or ventricular tachycardia. It is not atrial flutter, however. If it were, the QRS complexes occurring regularly would ...