Hundreds of thousands of boxing fans never gave up Saturday night, even as each round of the dreadfully dull John Riel Casimero-Guillermo Rigondeaux track meet mirrored the previous three minutes.
Ventricular fibrillation (VFib or VF) and ventricular tachycardia (v-tach or VT) are two types of heart arrhythmia that occur in the heart’s lower chambers, called the ventricles. The ventricles ...