Description

The main objective of this study is to evaluate whether blood NGAL measurement provides superiority over sCr and BUN tests in early diagnosis for assessing renal function in patients undergoing robotic urological surgery.

The secondary objective of the study is to evaluate the relationship between AKI development and monitored parameters such as age, BMI, comorbidities, ASA, OAB (overactive bladder), mean arterial pressure, intraabdominal pressure, surgical duration, urea and creatinine levels.

After obtaining ethical approval from the Ministry of Health Ankara City Hospital Oncology Operating Room, a total of 55 patients between the ages of 18-80, ASA 1-3, who will undergo general anesthesia under elective conditions will be included in this prospective observational study.

During the preoperative period, patients will be evaluated and provided with written informed consent. Before being taken to the operating room, patients' age, gender, weight, height, body mass index (BMI), comorbidities, regular medication use, ASA classification, hemodynamic values and laboratory values will be recorded in the waiting area. Once in the operating room, patients will be monitored according to the standard working protocol of the anesthesia clinic including non-invasive arterial blood pressure monitoring, 3 or 5-channel ECG and pulse oximetry. Additionally, standard preoperative and postoperative biochemical profiles (including hemogram) and urinary NGAL levels will be measured.

During the perioperative period, routine hemodynamic parameters such as heart rate (HR) (beats per minute), systolic arterial blood pressure (SAB) (mmHg), diastolic arterial blood pressure (DAB) (mmHg), mean arterial blood pressure (OAB)(mmHg), peripheral oxygen saturation(SpO2) as well as postoperative laboratory values will be recorded.

Blood samples for NGAL measurements will be collected at preoperative and perioperative hours 2nd and 6th. Creatinine clearance calculation,hourly urine output; which are commonly used markers to evaluate acute kidney injury(AKI) along with standard laboratory parameters,and other complications related to AKI management ,will also be recorded.