Intravenous Dexmedetomidine for Cesarean Section
Breast Feeding, Analgesia Obstetrical, Postoperative Pain
About this trial
This is an interventional treatment trial for Breast Feeding focused on measuring Dexmedetomidine, Butorphanol tartrate, Analgesia, Breastfeeding, Relative infant dose
Eligibility Criteria
Inclusion Criteria:
- Parturients who had successfully breastfed a prior infant and planned to breastfeed after this delivery were screened for eligibility.
- Parturients undergoing elective caesarean delivery under epidural anaesthesia
- ASA I and II parturients aged 18-45 years, with singleton gestation.
- Parturients with verbal and written mandarin
- Parturients who want to use PCA intravenous analgesia and can use the pump correctly
- written informed consent.
Exclusion Criteria
- Multiple gestation.
- A history of allergy to dexmedetomidine or other study drugs
- Cardiovascular disease (basic HR<50bpm or SBP<100mmHg)
- Opioid drugs abuse.
- BMI more than 35 kg/m2
- Conditions that preclude spinal anesthesia.
- Preeclampsia or epilepsy.
- A history of neuromuscular disease.
- Epidural anaesthesia was unsuccessful.
- The parturients, whose surgery ended after 11 a.m.
Sites / Locations
- The First Affiliated Hospital with Nanjing Medical University
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Placebo Comparator
Experimental
Experimental
Experimental
control group
Dexmedetomidine 0.03ug/kg/h group
Dexmedetomidine 0.05ug/kg/h group
Dexmedetomidine 0.08ug/kg/h group
The placebo group will pumped in the same volume of saline 0.9% as calculated by parturients' weight in 30 min and receive 1mg butorphanol after delivery. Postoperative analgesic formula: 3ug/kg/h butorphanol tartrate, diluted with normal saline to 100ml. Background dose: 2ml/h, PCA: 0.5ml, locking time: 15 min.
This group will receive 0.5ug/kg intravenous dexmedetomidine diluted to 4ug/ml in 30 min and 1mg butorphanol tartrate after delivery. Postoperative analgesic formula: 3ug/kg/h butorphanol tartrate with 0.03ug/kg/h dexmedetomidine, diluted with normal saline to 100ml. Background dose: 2ml/h, PCA: 0.5ml, locking time: 15 min.
This group will receive 0.5ug/kg intravenous dexmedetomidine diluted to 4ug/ml in 30 min and 1mg butorphanol tartrate after delivery. Postoperative analgesic formula: 3ug/kg/h butorphanol tartrate with 0.05ug/kg/h dexmedetomidine, diluted with normal saline to 100ml. Background dose: 2ml/h, PCA: 0.5ml, locking time: 15 min.
This group will receive 0.5ug/kg intravenous dexmedetomidine diluted to 4ug/ml in 30 min and 1mg butorphanol tartrate after delivery. Postoperative analgesic formula: 3ug/kg/h butorphanol tartrate with 0.08ug/kg/h dexmedetomidine, diluted with normal saline to 100ml. Background dose: 2ml/h, PCA: 0.5ml, locking time: 15 min.