Paravertebral block reduces pain in elderly patients with percutaneous nephrolithotomy: A randomized controlled study protocol

OBJECTIVE: To assess the effectiveness of paravertebral block for the percutaneous nephrolithotomy (PCNL) patients. METHOD: This study will be implemented from May 2021 to March 2022 at Affiliated Hospital of Youjiang Medical University for Nationalities and it was granted through the Research Ethics Committee of Affiliated Hospital of Youjiang Medical University for Nationalities (No.60192038). This study includes a total of 100 patients. The criteria for inclusion of patients involves: 1. patients over 60 years old; 2. American Society of Anaesthesiologists I or II classification. The criteria for exclusion involves: 1. skin infection at injection site, spinal deformity, abnormal coagulation function; 2. patient refusal, and known drug allergy. The visual analogue scores, heart rate, the diastolic and systolic blood pressure, complications, and side effects, the consumption of opioid and extra analgesic needs are recorded in rehabilitation room 1 hour after the surgery and in the first 24 hours of urological service. RESULTS: Table 1 shows the postoperative data among 2 groups. CONCLUSION: In comparison with traditional analgesia, the ultrasound-guided paraventric block is an effective analgesic approach in PCNL, and no additional complications are encountered. TRIAL REGISTRATION NUMBER: research registry 6259.