[Expert Solution]: StudyScenarioL.M

StudyScenarioL.M. is a 60 year old woman who is admitted to your telemetry unit in a major medical center after being successfully resuscitated by medics from a cardiac arrest due to ventricular fibrillation (v-fib). L.M., a divorced homemaker, had her sudden death experience in the small rural community where she lives and was transported to your facility for evaluation and treatment after she was stabilized. At the time of the arrest, her potassium level was 2.8 mmol/L and magnesium level was 1.3 mg/dl. As you continue to review her medical history, you learn that she had rheumatic fever as a childand over the years has developed severe rheumatic heart disease with mitral and aorticvalve involvement and dilated cardiomyopathy. Four years ago she had a percutaneous balloon mitral valvuloplasty (PBMV) for mitral valve stenosis (MVS). She also has probable aortic valve stenosis (AVS). During the past year she has