Effect of Intraoperative Sedation on PND in Elderly Patients

Phase

UNKNOWN

Status

160

Enrollment

OTHER

Sponsor class

Conditions

DRUG: Patients received lighter sedation with propofol after spinal anesthesia.
DRUG: Patients received heavier sedation with propofol after spinal anesthesia
DRUG: Patients received lighter sedation with dexmedetomidine after spinal anesthesia
DRUG: Patients received heavier sedation with dexmedetomidine after spinal anesthesia.

Hebei Medical University Third Hospital