ObjectiveTo evaluate the fourth-generation ultrasonic lithotripsy system for treating the urinary tract stones.Methods243 cases of urinary tract stones who received treatment of fourth-generation EMS ultrasonic lithotripsy system were analyzed retrospectively.ResultsImmediate phase I lithotrotrisy was performed successfully in 227 cases and the successful rate of phase I was 93.3％ (227/243).Delayed phase Ⅱ lithotripsy was performed for 16 patients.Complications happened in 2 cases,one case occurred hydropneumothorax during operation,required indwelling thoracic drainage tube processing,the other had severe bleeding which conservative treatment was ineffective,cured by the intervention of super-selective renal artery embolization.Conclusion Fourth generation of ultrasonic lithotripsy for treating stones on different anatomical locations of urinary system was safe,practical and efficient,worthy of clinical application.

The risk of developing perioperative acute kidney injury (AKI) in elderly patients increases with age. The combined involvement of aging kidneys, coexisting multiple underlying chronic diseases, and increased exposure to potential renal stressors and nephrotoxic drugs or invasive procedures constitute susceptibility factors for AKI in elderly patients. The perioperative AKI in elderly patients undergoing noncardiac surgery has its own specific population characteristics, so it is necessary to further explore the characteristics of AKI in elderly patients in terms of epidemiology, clinical diagnosis, risk factors, and preventive and curative measures to provide meaningful clinical advice to improve prognosis, accelerate recovery, and reduce medical burden in elderly patients. Since AKI has the fastest-growing incidence in older patients and is associated with a worse prognosis, early detection, early diagnosis, and prevention of AKI are important for elderly patients in the perioperative period. Large, multicenter, randomized controlled clinical studies in elderly non-cardiac surgery patients with AKI can be conducted in the future, with the aim of providing the evidence to reduce of the incidence of AKI and to improve the prognosis of patients.
Humans ; Aged ; Acute Kidney Injury/prevention & control* ; Kidney ; Risk Factors ; Prognosis ; Incidence ; Postoperative Complications/prevention & control*