Pain is a common and crucial problem in clinical practice, because it has a profound influence on patients in perioperative period. Butorphanol, among plenty of analgesics, is widely used in clinical trials for its various advantages and better analgesic effects. As a typical agonist-antagonist opioid analgesic agent, butorphanol, however, shows different clinical manifestations with different affinity for opioid receptors 25∶4∶1 (κ∶μ∶δ). Besides, butorphanol provides remarkable analgesic and sedative effect in preemptive analgesia, induction and recovery period in general anesthesia, and postoperative analgesia And it could be as a adjuvant to local anaesthesia either. Compared with other opioid drugs, butorphanol is less likely to have side effect on respiratory depression. In addition, its physical dependence is extremely low.

Dexmedetomidine (DEX ) is an α₂ adrenalin-receptor agonist with potent sedation, analgesia, anti-anxiety and anti-sympathetic effect. Moreover, DEX exert no inhibition of respiratory function with high safety and has considerable clinical application prospect. Children often experience emergency agitation (EA) and other uncomfortable symptom which is associated with special physical and mental state. Thus, an ideal pediatric anesthetic premedication is getting a lot of attention. DEX is superior to other premedication in sedation with high safety. Compared with others, DEX by nasal spray is an ideal drug delivery method to reduce the side effects and facilitate the implementation of the drug. The relevant research progress of the effective dose, efficacy and safety will be reviewed.

Syndrome differentiation and treatment is a unique mode of diagnosis in traditional Chinese medicine （TCM）. The establishment of scientific and standardized syndrome diagnosis standards is an important link to evaluate the clinical efficacy of TCM objectively and systematically， and also a prerequisite for the promotion and development of TCM to obtain international recognition. This article reviewed the basic modes and existed problems of the current syndrome diagnosis criteria， and proposed to construct a multidimensional core information set integrating the minimized core symptoms， the artificial intelligence signs， the multi-modal laboratory indicators， and multi-omics specific markers， so as to present syndrome characteristics from multiple perspectives systematically. This paper also described the basic mode， constructure， as well as the process and methodology to be adopted in the establishment of the standardized diagnostic research method. The core information set of diagnostic symptoms not only took into account the specificity of the disease， but also improved the inconsistency due to the complexity and subjectivity of the syndrome differentiation， thereby providing a methodological basis for the standardization of TCM syndrome differentiation in clinical research.

Currently， there are many difficulties in formulating recommendations of traditional Chinese medicine （TCM） clinical practice guidelines. This paper analyzed and summarized the unique or prominent difficult issues in the formulation of recommendations faced by TCM guidelines， such as experts' professional background and experience bringing about the preferance from the academic emotion， inconsistency between different academic schools making it difficult to reach consensus， lack of guiding principles of the decision weight of different dimensions for recommendations. Therefore， methodological suggestions have been put forward， including organizing parallel TCM and western medicine consensus group， improving the method of combining TCM and western medicine paradigm， attaching great importance to the evidence-based governance of academic schools， and promoting the research on different dimensions for recommendation formulation， which may provide a methodological reference for the guideline development.