RT Journal Article SR Electronic T1 Feasibility of one-shot dilation access in the pediatric age group JF World Journal of Pediatric Surgery JO World Jnl Ped Surgery FD BMJ Publishing Group Ltd SP e000311 DO 10.1136/wjps-2021-000311 VO 5 IS 1 A1 Srivastava, Alok A1 Yadav, Krishna Kumar A1 Singh, Anjana A1 Srivastava, Anoop Kumar A1 Singh, Sanjeet Kumar YR 2022 UL http://wjps.bmj.com/content/5/1/e000311.abstract AB Objective To compare sequential fascial dilation (SFD) versus one-shot dilation (OSD) in the pediatric patients undergoing percutaneous nephrolithotomy.Methods The present study is an observational study. The study subjects were divided into two groups. In group 1, renal dilation was done using the SFD and in group 2, renal dilation was done using the OSD. The amount of time exposed to radiation during access to pelvicalyceal system was estimated. Complications, stone free rates, ancillary procedures for residual stones and hospital stay were compared. Modified Clavien-Dindo classification was used for grading the complications.Results Radiation exposure and operative time were less in OSD group (95% confidence interval (CI) 3.068 to 14.072, and 2.565 to 12.435, p<0.005). The mean drop of hematocrit was statistically less significant in OSD group (p=0.032). In both groups, complications, stone free rate and hospital stay were statistically insignificant.Conclusions OSD is feasible in the children with reduced radiation exposure and shorter operative time. The outcome was similar to SFD.Data are available upon reasonable request.