In this study, the investigator will examine the efficacy of Pericapsular nerve group (PENG) block in hip arthroplasty as a post-operative pain management technique, study the analgesia, opioid-sparing effects and motor-blocking effects of the PENG block
PENG Block group (PG) will receive 0.5%Ropivacaine in 20 ml of saline. Sham Block group (SG) will receive 20 ml of saline Patient will be sedated with IV midazolam before nerve block. After peripheral nerve block ,general anesthesia will be conducted using sufentanyl, propofol and rocuronium for induction and propofol and sevoflurane for maintenance. Tests will be operated after procedure，and recorded up to 48 hours after surgery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
71
Branches of both the FN and ON provide innervation to the anterior hip capsule. High and low branches of FN provided the majority of innervation to the lateral and superomedial hip capsule. The AON innervates the medial capsule.Both of the nerve close to the periosteum between the iliopubic eminence and AIIS ,by using ultrasound guided technique,these sites can be potential bony landmarks provid approch to the nerve group.
Guangzhou First Municipal People's Hospital
Guangzhou, Guangdong, China
RECRUITINGHighest VAS score in recovery room
Highest VAS score reported in recovery room,patient will be asked questions to measure the highest VAS score experienced in the recovery room before discharge. If the patient had a unexpected long stay at recovery room, the question will be asked at the time point "2 hours after surgery end"
Time frame: before recovery room discharge(up to 2 hours after surgery end)
VAS at rest
VAS pain score while patient at rest
Time frame: day0 ,day1 ,day2
highest VAS at period
highest VAS reported at follow up period
Time frame: day0 ,day1 ,day2
quadriceps strength
Measure quadriceps strength peak value at different time point
Time frame: day0 , day1 ,day2
total opioid consumption
Time frame: up to 2 days after surgery
PONV rate
postoperative nausea and vomit
Time frame: day0 ,day1 ,day2
Fall incident happened
Record the fall incident happened,fall is defined as patinent accidently fall to the ground.
Time frame: up to 2 days after surgery
Nerve block range
A cotton yarn with ethanol will be put on both the surgical and nonsurgical leg to evaluate the cold sensation lost after nerve block.Skin sensation lost will be tested at lateral thigh,medial thigh,front thigh and lateral claf
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Time frame: day0 , before discharge from PACU(up to 2 hours after surgery end)