Objective To study the evidence-based medicine in clinical practice in emergency medicine teaching ap-plication value. Methods Randomly selected from March 2011 to March 2014, worked as an intern in department of e-mergency and evidence-based medicine education pattern to carry on the education of students with 136 cases as ob-servation group, at the same time selected in the traditional teaching mode of interns 136 cases as control group, com-pared two groups of teaching effect. Results The observation group USES the education mode of evidence-based medicine (ebm) effect is significantly better than using the traditional teaching mode of the control group, with signifi-cant difference (P< 0.05). Conclusion Evidence-based medicine teaching mode in emergency medicine teaching can improve students' enthusiasm in[1], greatly help students to establish a clinical thinking mode, the deep understanding of the correct concept of evidence-based medicine, so as to make the interns grasp of evidence-based medicine and can skill application in clinical practice[2].

Objective:To study the feasibility of indwelling ureteral stent for a short time (72 hours) in patients after uncomplicated retrograde intrarenal stone surgery(RIRS).Methods:The clinical data of 58 patients who underwent uncomplicated flexible ureteroscopic lithotripsy in Xuancheng People's Hospital from October 2020 to December 2021 were retrospectively analyzed. According to indwelling time of ureteral stent after surgery, the patients were divided into two groups. There were 26 cases indwelling within 72 hours after operation, named as the observation group, and 32 cases indwelling for about 3 weeks after operation, named as the control group. There was no significant difference in gender [male/female: 14/12 vs. 21/11], age [(43.4 ± 10.2) vs. (43.9 ± 11.9) years old], affected side [left/right: 17/9 vs. 20/12], and maximum diameter of stones [(9.3 ± 1.8) mm vs. (9.7 ± 1.9) mm] between the observation group and the control group. All patients in the two groups underwent unilateral ureteroscopic lithotripsy under general anesthesia. The stone removal rate, recovery of water accumulation and incidence of postoperative complications in the first and third months after the surgery were compared.Results:There was no statistical difference between the observation group and the control group in the stone removal rate [100.0% (26/26) vs. 96.9% (31/32)] and recovery of hydronephrosis [100.0% (26/26) vs. 96.9% (31/32)] at the first month after surgery. All the stones were removed and all the hydronephrosis recovery in the two groups at the 3rd month after surgery. The rates of postoperative lumbar and abdominal pain [3.9% (1/26) vs. 28.1% (9/32)], carnal hematuria [3.9% (1/26) vs. 59.4% (19/32)], urinary tract infection [0 vs. 15.6% (5/32)], and bladder irritation [0 vs. 68.8% (22/32)] in the observation group were significantly lower than those in the control group ( P<0.05). Conclusions:Indwelling a ureteral stent for a short time (72 hours) after uncomplicated RIRS does not affect the surgical effect and does reduce the risk of complications as well as promote rapid postoperative recovery.