REGULAR CONTENT
Final ID
522
Type
Original Scientific Research-Oral or Pos
Authors
E Kim1, B Choi2, J Oh3, H Chun2, H Lee4
Institutions
1Department of Radiology, Seoul St. Mary's Hospital, Seoul, Korea, 2Seoul St. Mary's Hospital, Seoul, Korea, Republic of, 3Seoul St. Mary's Hospital, Seoul, Korea, 4Seoul St. Mary's Hospital, Seoul, Korea
Purpose
To compare stent patency and clinical outcome between the primary and secondary stent placement methods with a large series of patients and to analyze factors for stent patency
Materials & Methods
Between June 2006 and March 2014, a total 250 double J ureteral stent (DJUS) placements were performed on 195 patients in our institutional unit. There were 97 males and 98 females, with a mean age of 57.4 years (range, 23 to 95 years). All patients who had suffered from unilateral or bilateral hydronephrosis were referred to our interventional unit when the urologist thought transurethral retrograde positioning of the stent to be difficult. The causes for DJUS placement were divided into 3 broad categories: malignant causes (n=172, 88.2%), benign causes (n=17, 8.7%), and unknown origin (n=6, 3.1%).
Results
In a total of 195 patients, 250 antegrade DJUS placements were performed; 176 underwent primary DJUS stent placement and 74 underwent secondary DJUS stent placement. The stent patency rates were 69.3% (122/176) in the primary DJUS group and 68.9% (51/74) in the secondary DJUS group, although the differences were not statistically significant (P=0.950). The clinical success rates were 96.2% (102/106) in primary DJUS group and 97.9% (46/47) in secondary DJUS group. There was no significant difference in clinical success between the primary and secondary DJUS groups (P=0.928). The stent patency rates became significantly lower as the blood clot retention grades increased in the primary and secondary DJUS groups (P=0.014 and 0.001, respectively). There were no significant correlation between blood clot retention grades and clinical success rates (P=0.949) in subgroup analysis of primary and secondary DJUS groups (P=0.602 and 0.382, respectively).
Conclusions
Primary DJUS placement can be considered a valid alternative to secondary approach in patients who shows stable condition without urosepsis sepsis. The stent patency rate can be increased by decreasing the blood clot retention grade. Therefore, one-stage antegrade DJUS placement is feasible in carefully selected patients and will promise high success rate.
Final ID
522
Type
Original Scientific Research-Oral or Pos
Authors
E Kim1, B Choi2, J Oh3, H Chun2, H Lee4
Institutions
1Department of Radiology, Seoul St. Mary's Hospital, Seoul, Korea, 2Seoul St. Mary's Hospital, Seoul, Korea, Republic of, 3Seoul St. Mary's Hospital, Seoul, Korea, 4Seoul St. Mary's Hospital, Seoul, Korea
Purpose
To compare stent patency and clinical outcome between the primary and secondary stent placement methods with a large series of patients and to analyze factors for stent patency
Materials & Methods
Between June 2006 and March 2014, a total 250 double J ureteral stent (DJUS) placements were performed on 195 patients in our institutional unit. There were 97 males and 98 females, with a mean age of 57.4 years (range, 23 to 95 years). All patients who had suffered from unilateral or bilateral hydronephrosis were referred to our interventional unit when the urologist thought transurethral retrograde positioning of the stent to be difficult. The causes for DJUS placement were divided into 3 broad categories: malignant causes (n=172, 88.2%), benign causes (n=17, 8.7%), and unknown origin (n=6, 3.1%).
Results
In a total of 195 patients, 250 antegrade DJUS placements were performed; 176 underwent primary DJUS stent placement and 74 underwent secondary DJUS stent placement. The stent patency rates were 69.3% (122/176) in the primary DJUS group and 68.9% (51/74) in the secondary DJUS group, although the differences were not statistically significant (P=0.950). The clinical success rates were 96.2% (102/106) in primary DJUS group and 97.9% (46/47) in secondary DJUS group. There was no significant difference in clinical success between the primary and secondary DJUS groups (P=0.928). The stent patency rates became significantly lower as the blood clot retention grades increased in the primary and secondary DJUS groups (P=0.014 and 0.001, respectively). There were no significant correlation between blood clot retention grades and clinical success rates (P=0.949) in subgroup analysis of primary and secondary DJUS groups (P=0.602 and 0.382, respectively).
Conclusions
Primary DJUS placement can be considered a valid alternative to secondary approach in patients who shows stable condition without urosepsis sepsis. The stent patency rate can be increased by decreasing the blood clot retention grade. Therefore, one-stage antegrade DJUS placement is feasible in carefully selected patients and will promise high success rate.