The primary objective of the study is to evaluate the safety and tolerability of single intravenous (IV) doses of REGN5381 in healthy normotensive and otherwise healthy hypertensive adults. The secondary objectives of the study are: * To evaluate the effect of single IV doses of REGN5381 on blood pressure (BP) and heart rate (HR) in healthy normotensive and otherwise healthy hypertensive adults * To evaluate the effect of single IV doses of REGN5381 on cardiac stroke volume (SV) * To evaluate the pharmacokinetics (PK) of single IV doses of REGN5381 * To evaluate the immunogenicity of single IV doses of REGN5381
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Incidence of Treatment-Emergent Adverse Events
Timeframe: Up to Day 78