Serum @entity972 is often low after resuscitation from out-of-hospital @entity2224 . We hypothesized that @entity1371 develops after @entity1165 induced by programmed electrical stimulation. We measured serum @entity972 in 10 @entity1 before induction of @entity1165 and 15 minutes, 45 minutes, and 3 hours following cardioversion from @entity1165 . @entity1165 rate was 243 +/- 71 bpm and duration was 57 +/- 87 seconds. Mean serum @entity972 (mEq/L) decreased from 4.1 +/- 0.3 at baseline to 3.8 +/- 0.5 at 15 minutes (p less than 0.01 vs baseline) and 3.7 +/- 0.6 at 45 minutes (p less than 0.005 vs baseline), but returned to 4.1 +/- 0.5 at 3 hours. Although no @entity1 were @entity8598 ( @entity972 less than 3.5 mEq/L) at baseline, 33% were @entity8598 at 15 minutes and 40% were @entity8598 at 45 minutes (p = 0.06 vs baseline). A low serum @entity972 was found in several of these @entity1 immediately after the clinical @entity943 that led to electrophysiologic study, and rapid resolution of the @entity1371 was observed. Thus, serum @entity972 decreases rapidly in @entity1 after resuscitation from brief but hemodynamically significant @entity1165 . This suggests that @entity1 with @entity1371 after resuscitation from out-of-hospital @entity2224 have @entity1371 secondary to the event. The electrophysiologic effects of post-cardioversion @entity1371 are unknown.

@entity1371 after cardioversion from XXXX induced in the electrophysiology laboratory.

@entity1 :: ('9606', 'Species') :: ['patients', 'man'] @entity1165 :: ('MESH:D017180', 'Disease') :: ['Ventricular tachycardia', 'ventricular tachycardia'] @entity2224 :: ('MESH:D014693', 'Disease') :: ['ventricular fibrillation'] @entity972 :: ('MESH:D011188', 'Chemical') :: ['potassium'] @entity8598 :: ('MESH:D020514', 'Disease') :: ['hypokalemic'] @entity943 :: ('MESH:D001145', 'Disease') :: ['arrhythmia'] @entity1371 :: ('MESH:D007008', 'Disease') :: ['hypokalemia']
@entity1165 :: (MESH:D017180,Disease) :: ['ventricular tachycardia']
