Comprehensive Complication Index in the Classification of Complications of Percutaneous Nephrolithotomy

Percutaneous kidney stone surgery (PNL) will be performed due to kidney stones, and 644 patients will be included in the study according to the power analysis\*. Demographic data of the patients, stone characteristics and data related to stone burden, data related to the operation will be noted by looking at the hospital files. Patients who have undergone surgery can be discharged after an average of 3 days and can be called for routine control after an average of 2 months. All complications developed during the inpatient follow-up and any complications developed during the control period will be noted using the patient's file information. Then, all these complications that are detected to develop will be scored separately using the CCI and CDC complication scales. 1. Using the free online tool www.assessurgery.com, the Comprehensive Complications Index (CCI) score for the total burden of complications will be calculated for each patient. 2. Each patient's most major complication will be determined and graded according to the Clavien-Dindo (CDC) classification (as described below). Grade I: Any deviation from the normal postoperative course requiring only the following drugs: antiemetics, antipyretics, diuretics Grade II: Pharmacological therapy (with drugs not necessary for CDC I complications), blood transfusion, total parenteral nutrition Grade IIIa: Surgical, endoscopic or radiological intervention not under general anesthesia Grade IIIb: Surgical, endoscopic or radiological intervention under general anesthesia Grade IVa: single organ dysfunction requiring intensive care unit management Grade IVb: multiple organ dysfunction requiring intensive care unit management Grade V: Death All the data obtained, CCI and CDC, will be compared among themselves in terms of reliability, demographic data obtained from the pre-operative file data, stone characteristics and data related to the operation will be compared, as well as their relationship with the length of hospital stay.