Comparison Of Modified Supine Lithotomy Position And Prone Position Percutaneous Nephrolithotomy For Renal Calculi

ObjectiveUrolithiasis is one of the common causes of morbidity and deterioration of quality of life worldwide,with rates ranging from 7% to 13% in North America,5% to 9% in Europe and 1% to 5% in Asia.Urolithiasis is a highly recurrent disease,with a recurrence risk of 34–50%.PCNL has been usually carried out with the patient in the prone position,which is user friendly for the urologist,since the first report of percutaneous nephrostomy in 1955.How-ever,this position has disadvantages for some patients,with potential complications including circulatory and respiratory difficulties,as well as possible intraoperative repositioning of anesthetized patients from supine to prone.The purpose of this study is to explore the clinical effect of improved supine lithotomy position and percutaneous nephrolithotomy in the prone position in the treatment of renal calculi.Subjects and methodsMethods a total of 50 patients with renal calculi admitted to Department of Urology,the First Affiliated Hospital of Zhengzhou University from May 2013 to May-2017 were selected as the research subjects.All patients were randomly divided into observation group and control group,25 cases in each group.The control group was performed percutaneous nephrolithotomy under prone position.The observation group was treated with modified supine lithotomy,percutaneous nephrolithotomy.The operative time,bleeding volume,hospitalization time and hemodynamic changes in two groups were compared.ResultsObserve the amount of bleeding and hospitalization time were lower than the control group in the operation time,the difference was statistically significant(P < 0.05);the two groups preoperative hemodynamic index compared with no significant difference(P > 0.05),postoperative observation group,hemodynamic indexes were higher than those in control group,the difference was statistically significant(P < 0.05).ConclusionCompared with prone percutaneous nephrolithotomy,the improved flat position lithotomy lithotripsy for the treatment of renal calculi has shorter operative time and hospitalization time,which can effectively reduce blood loss and hemodynamic indexes,and has significant clinical effect.