The main purpose of this study is to evaluate the postoperative effect of erector spinae block in patients undergoing nephrectomy that causes both visceral and somatic pain.

After being informed and potential risks about the study, all patients have given written consent will undergo 24 hours screening for the analgesic effect of erector spinae block after nephrectomy. Patients meeting the criteria were randomly selected in double-blind manner 1:1 ratio to erector spiane block or not.

Inclusion Criteria:

1. To undergo partial or total nephrectomy surgery
2. To be in ASA I-II classification
3. To be between the ages of 18-65.
4. Not having problems that prevent erector spinae block application such as local anesthetic drug allergy, infection at the injection site, and structural anomaly.
5. Being in good mental and psychological health
6. To accept to participate in the study.

Exclusion Criteria:

1. Being in ASA III or IV class with a high risk of anesthesia
2. Being outside the age range of 18-65
3. Having problems such as local anesthetic drug allergy, infection at the injection site, and structural anomaly prevents block application.
4. Not being mentally and psychologically healthy
5. Those who are allergic to the active substance, patients using antiepileptic drugs
6. Those with severe hepatic and renal failure
7. Those who have long-term use of nonsteroidal anti-inflammatory and opioid analgesic,
8. Those with diabetes and other neuropathic diseases
9. Patients who cannot use patient-controlled analgesia (PCA) device

Participant data will be shared as much as the tasks described in the study. A meeting will be held at the end of the research, and the statistical data results will be shared. Dr. Ayhan Şahin is responsible.

starting after 6 months publication

After publication, sharing will be made according to the journal criteria.