Table 2 Dysrhythmia During Dysrhythmia During Exercise Recovery Pre-Tx ETT None * None * OMST #1 None 3 isolated PVCs 5 bigeminal
paired PVCs OMST #2 4 isolated PVCs during 2 isolated PVCs stage II 1 isolated PVC at stage III 4 isolated PVCs at stage IV OMST #3 7 isolated PVCs during 7 isolated PVCs stage III 1 isolated PVC at stage IV * beta blocker was likely controlling heart rate and rhythm Table 3 Dysrhythmia During Dysrhythmia During Exercise Recovery OMST #4 None None OMST #5 1 isolated PVC during 2 isolated PVC stage II 1 bigeminal
paired PVC OMST #6 None 3 isolated PVC Post-Tx ETT None 1 isolated PVC
Comment: Magnesium deficiency can lead to various arrhythmias, including ventricular premature beats, atrial fibrillation, supraventricular tachycardia, torsades de pointes, supraventricular ectopic beats, bigeminal
rhythm, and ventricular fibrillation.
A common cause of a bigeminal
rhythm is 3:2 A-V block, and Type I block is more frequent than Type II.
Inspection of the figure shows a bigeminal
rhythm with each of the long R-R intervals measuring 0.71 sec and each of the short R-R intervals, 0.46 sec.