Comparison of Postoperative Analgesic Efficacy of the Erector Spina Plane Block and Quadratus Lumborum Block in Open Nephrectomy: a Prospective Randomized Clinical Study

Comparison of Erector Spina and Quadratus Lumborum in Open Nephrectomy

patients who will undergo elective open nephrectomy will be divided into three groups; the control (PCA), the erector spina plane block, and the quadratus lumborum block. After standard anesthesia induction and monitorization then Bispectral index monitoring will be applied to all patients. Anesthesia will be maintained using sevoflurane in a mixture of oxygen and air. Continuous remifentanil infusion will be used for analgesia. Then patient's numeric rating scales and morphine pca consumptions will be recorded for one day.

patients who will undergo elective open nephrectomy will be divided into three groups; the control (PCA), the erector spina plane block and the quadratus lumborum block. After standard anesthesia induction and monitorization then Bispectral index monitoring will be applied to all patients. Anesthesia will be maintained using sevoflurane in a mixture of oxygen and air. Continious remifentanil infusion will be used for analgesia. Then patient's numeric rating scales and morphine pca consumptions will be recorded for one day.

Inclusion Criteria:

• ASA 1-3
• open nephrectomy elective patients
• BMI<35

Exclusion Criteria:

• ASA 4-5-6
• Laparoscopic nephrectomy
• infection at the block side
• coagulation disorder
• BMI>35