Emerging sedative agents are increasingly being explored to improve the safety and effectiveness of procedural sedation in pediatric emergency care. Traditional agents such as propofol and ketamine remain widely used because of their rapid onset and clinical effectiveness; however, they may be associated with adverse effects, including hypotension, respiratory depression, and emergence reactions, which require careful monitoring during pediatric procedural sedation. In this context, newer pharmacologic approaches have been investigated to optimize safety and procedural control. Remimazolam, a benzodiazepine metabolized by tissue esterases, demonstrates rapid clearance, minimal drug accumulation, and stable hemodynamic profiles. Clinical studies suggest comparable efficacy to propofol in procedural sedation, with potential advantages including reduced respiratory depression and a lower incidence of emergence delirium. Its reversibility with flumazenil may further enhance safety in selected clinical scenarios. Dexmedetomidine, a selective α₂-adrenergic receptor agonist, provides sedation that resembles natural sleep and offers intrinsic analgesic properties with minimal respiratory depression. Although its onset of action may be slower than that of agents such as propofol, dexmedetomidine is associated with favorable respiratory stability and may be particularly useful in pediatric patients requiring cooperative or prolonged sedation. Intranasal administration represents a noninvasive alternative in situations where intravenous access has not yet been established, although its pharmacokinetic profile may result in delayed onset. These agents have been applied in a variety of pediatric procedures, including painful interventions, imaging studies, and short diagnostic procedures. Their use may be particularly valuable in children with developmental disorders or complex comorbidities, where stable hemodynamic and respiratory profiles are essential. Contemporary safety frameworks emphasize structured risk assessment, airway preparedness, weight-based dosing strategies, and continuous monitoring techniques such as capnography and pulse oximetry. Current evidence from randomized and observational studies suggests that emerging sedative strategies may provide effective procedural sedation while maintaining favorable safety profiles when appropriately integrated into multimodal sedation approaches. Nevertheless, important knowledge gaps remain, including limited pediatric data for certain agents, the need for standardized protocols, and the evaluation of long-term outcomes in younger patient populations.
Montoya et al. (Tue,) studied this question.