the Relationship Between Vertebral Body Length, Subarachnoid Space Width and Block Level
NCT05201261
·
clinicaltrials.gov ↗
UNKNOWN
Status
50
Enrollment
OTHER
Sponsor class
Conditions
Combined Spinal Epidurai Anesthesia
Lower Extremity Surgery
Interventions
DEVICE:
ltrasonic measure
Sponsor
Shengjing Hospital