0390 Efficacy of Lower-Sodium Oxybate in the Treatment of Idiopathic Hypersomnia: Evaluation of Response Based on the Idiopathic Hypersomnia Severity Scale Score-V45IS1 0390 Efficacy of Lower-Sodium Oxybate in the Treatment of Idiopathic Hypersomnia: Evaluation of Response Based on the Idiopathic Hypersomnia Severity Scale Score-V45IS1 Download 0389 Efficacy of Lower-Sodium Oxybate in the Treatment of Idiopathic Hypersomnia: Evaluation of Response Based on the Epworth Sleepiness Scale Score-V45IS1 0391 Physician Perspective on Idiopathic Hypersomnia: Awareness, Diagnosis, and Impact on Patients-V45IS1