Investigation and Clinical Experience With Subcutaneous Dexmedetomidine: An Educational Focused Review With a Focus...

Dexmedetomidine is a centrally acting selective α₂-adrenergic agonist that initially received US Food and Drug Administration approval in 1999 for the sedation of intubated and mechanically ventilated adult patients for up to 24 hours. Since then, it has seen widespread use in clinical practice in various clinical scenarios including sedation during mechanical ventilation, provision of adjunctive analgesia, procedural sedation, treatment of withdrawal, and sedation during end-of-life care. Although traditionally administered intravenously, animal investigations and anecdotal clinical experience has reported efficacy with subcutaneous (SC) administration. Clinical applications of SC dexmedetomidine have included procedural sedation; outpatient and home care where IV administration may not be feasible or interfere with patient comfort; the management or prevention of drug withdrawal symptoms; and during end-of-life care. This educational review outlines the basic physiology of dexmedetomidine, and details reports of its SC administration in laboratory animals as well as various clinical scenarios with a specific focus on its applications in pediatric-aged patients. Techniques for SC administration and dosing schemes are presented.