About this trial
Cesarean section (CS) is one of the most frequently performed surgical procedures globally, with an increasing demand for safe and effective anesthesia techniques. Regional anesthesia, particularly intrathecal anesthesia, has become the method of choice for elective cesarean deliveries.The most commonly used local anesthetic for intrathecal anesthesia is bupivacaine.Recent studies have focused on adjunctive agents to enhance the efficacy of local anesthetics.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
(1) Full-term pregnant women undergoing elective cesarean section under spinal anesthesia. (2) Age: 20 ~ 35 years. (3) ASA physical status II ~ III
Disqualifiers
Multiple pregnancies.
Cardiovascular disease(e.g., pre-eclampsia and hypertension).
Serious hepatic dysfunction (Child-Pugh class C).
serious renal dysfunction (undergoing dialysis before surgery).
Trial design
Parallel
Treatments tested in this trial
Bupivacaine
Drugpatient will receive intra-thecal hyperbaric bupivacaine 11 mg(2.2 ml) of 0.5% bupivacaine, with 0.5 ml of normal saline in total volume 2.5 ml.
Bupivacaine and Dexmedetomidine
Drugpatient will receive 9 mg (1.8 ml) of 0. 5% bupivacaine, with 5 μg of DEX in 0.5ml of normal saline in total volume 2.5 ml.
Treatment groups
Trial outcomes
Primary outcomes
the duration of sensory block
time taken from intrathecal injection to sensory regression to S1 dermatome.
Secondary outcomes
the onset time of sensory block
time taken from intrathecal injection to the maternal feeling of lower extremities temperature increment or numbness
the onset time of motor block
time taken from intrathecal injection to MBS \> 1
The recovery quality of parturients
ObsQoR-11, score from 0 to 10 in each term, where 0 = strongly agree and 10 = strongly disagree, the higher of the score, the higher of recovery quality
Sponsors and contacts
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