Comparative study to assess the analgesic efficacy of fentanyl versus dexmedetomidine added to bupivacaine as an additive in ultrasound guided erector spinae plane block for patients undergoing percutaneous nephrolithotomy under general anesthesia. a prospective randomized double blind study
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Comparative study to assess the analgesic efficacy of fentanyl versus dexmedetomidine added to bupivacaine as an additive in ultrasound guided erector spinae plane block for patients undergoing percutaneous nephrolithotomy under general anesthesia. a prospective randomized double blind study