This study aimed to determine the relationship between the quadratus lumborum and erector spinae plane block technique and the incidence and severity of chronic post-surgical pain in accordance with Brief Pain Inventory Score (BPI) in retroperitoneal laparoscopic living kidney donor surgery

A minimum of 130 subjects will be recruited and divided into two groups (65 QL block, 65 ESP block). The researcher will use the Brief Pain Inventory (BPI) score to assess the incidence and severity of chronic pain of the living kidney donor who has undergone retroperitoneal laparoscopy with QL or ESP block technique

Inclusion Criteria:

• Patient 18-65 years old
• Patient with ASA physical status assessment 1-3
• All patient who have undergone living kidney donor with retroperitoneal laparoscopy at RSUPN Dr. Cipto Mangunkusumo (3 months postoperative)
• The patient and/ or the family are willing to be interviewed about the patient's previous medical history and agree to be the subject of the study.

Exclusion Criteria:

• Patient who have already known the cause of the chronic pain they had
• Patient who have history of major surgery after the donor surgery
• Patient died during the study

The target population is all living kidney donor patients with retroperitoneal laparoscopy technique and performed QL or ESP block technique at RSUPN Dr. Cipto Mangunkusumo