Geneva, Jan. 12 -- International Clinical Trials Registry received information related to the study (ChiCTR2600115975) titled 'The appropriate dosage of Dexmedetomidine Hydrochloride Nasal Spray for sedation and amnesia during the puncture of intrathecal anesthesia in orthopedic lower limb surgery' on Jan. 4.

Study Type: Interventional study

Study Design: Parallel

Primary Sponsor: Lu'an City Traditional Chinese Medicine Hospital

Condition: Orthopedic lower limb surgery

Intervention: Group D1:30 minutes before the start of the spinal anesthesia puncture, the patient was given a nasal spray of dexmedetomidine hydrochloride 25 µg. Group D2:30 minutes before the start of the spinal anesthesia puncture, the patient was given a nas...