Materials-based drug delivery approaches have garnered substantial attention in recent years due to their potential to revolutionize pharmaceutical interventions. This abstract provides a concise overview of recent advancements and future prospects in this rapidly evolving field. Materials such as nanoparticles, liposomes, polymers, and hydrogels have emerged as versatile carriers for drug delivery. These materials facilitate precise control over drug release kinetics, enabling targeted and sustained therapeutic effects. Smart materials with responsiveness to external stimuli or physiological conditions have further enhanced drug delivery precision. Personalized medicine approaches are gaining traction, tailoring drug delivery systems to individual patient profiles and needs. The horizon for materials-based drug delivery is bright. Ongoing research is focused on refining material design, streamlining production processes, and ensuring safety profiles. Collaborative efforts among researchers, clinicians, and industry stakeholders are crucial for translating these advancements into clinical practice. Additionally, the convergence of drug delivery with diagnostics and imaging holds immense potential for personalized and efficient healthcare solutions. As materials-based drug delivery continues to evolve, it stands poised to reshape the landscape of pharmaceuticals, offering the promise of more effective and patient-centered therapies for a wide range of medical conditions.

Objective: To evaluate the effects of preemptive hydromorphone analgesia on postoperative delirium and stress response in patients undergoing laparoscopic cholecystectomy. Methods: A retrospective cohort study was conducted, including 167 patients who underwent laparoscopic cholecystectomy at Xi’an Central Hospital between June 2021 and November 2023. Patients were categorized into an observation group (n=87) receiving preemptive hydromorphone hydrochloride analgesia and a control group (n=80) without preemptive analgesia. Postoperative pain was assessed using the Visual Analogue Scale (VAS), and stress response was evaluated by measuring epinephrine, norepinephrine, and dopamine levels. The incidence of postoperative delirium was recorded. Logistic regression analysis was performed to identify risk factors for postoperative delirium. Results: The VAS score at 30 minutes postoperative was significantly lower in the observation group than that in the control group (P<0.001). Similarly, postoperative levels of epinephrine, norepinephrine, and dopamine were significantly reduced in the observation group (all P<0.001). The incidence of postoperative delirium was also significantly lower in the observation group (P<0.05). Multivariate logistic regression analysis identified higher doses of propofol (P<0.001; odds ratio =3.102, 95% confidence interval: 1.144-9.777) and remifentanil (P=0.001; odds ratio =2.376, 95% confidence interval: 1.469-4.290) as independent risk factors for postoperative delirium, indicating a significant increase in delirium risk with higher drug doses. Conclusion: Preemptive hydromorphone analgesia significantly alleviates postoperative pain, reduces stress responses, and lowers the incidence of postoperative delirium in patients undergoing laparoscopic cholecystectomy. Compared to conventional analgesia strategies, hydromorphone provides superior pain control and a favorable safety profile.