OBJECTIVE: To determine whether or not temporary drainage is necessary immediately following laparoscopic (lap) and robot-assisted (rob) pyeloplasty (PP). @entity1 AND METHODS: Of 99 @entity1 undergoing lap PP (n   =   23) or rob PP (n   =   76) for treatment of @entity4145 ( @entity4145 ), 52 had no drainage, 47 were given an "easy-flow" drain (EFD). The volume of leaking urine (in mL) was defined as the volume of drainage fluid (in mL)   *   @entity1011 concentration in drainage fluid (in  mol/mL)/median urine @entity1011 concentration (in  mol/mL). An @entity254 was considered to be leaking if the volume of leaking urine exceeded 5   mL/24 hours. During follow-up the PP success rate was evaluated based on clinical symptoms, intravenous urography and diuretic renography for detection of persisting obstruction. RESULTS: Median @entity1011 concentration in drainage fluid was 90    mol/L (range 44-6270    mol/L) in a median volume of 84   mL (range 5-1400   mL) drained fluid in 24 hours. The median leaking urine volume was 1.18   mL (range 0.07-291.34   mL), a leaking @entity254 was diagnosed in 5/47 (11%) @entity1 . In @entity1 with EFD and without EFD, complications occurred in 15% and 8% (p   =   0.342), respectively, with success rates of 98% and 100% (p   =   0.475). Complications (Clavien I-III) occurred in 4/42 (9.5%) @entity1 with watertight and in 3/5 (60%) @entity1 with leaking @entity254 (p   =   0.019). No statistically significant differences were noted between lap PP and rob PP @entity1 regarding complication and success rates. CONCLUSION: Lap PP and rob PP were primary watertight in 89% of all @entity1 . A primary leaking @entity254 had no influence on PP outcome, but was associated with a higher risk of complications. However, neither the success rate nor the complication rate differed between drained and undrained @entity1 . We conclude, therefore, that drainage is not necessary.

The Watertightness of the XXXX After Laparoscopic or Robot-Assisted Pyeloplasty: Is a Drainage Necessary?

@entity1 :: ('9606', 'Species') :: ['patients', 'PATIENTS'] @entity254 :: ('MESH:C563598', 'Disease') :: ['anastomosis'] @entity4145 :: ('MESH:C537373', 'Disease') :: ['ureteropelvic junction obstruction', 'UPJO'] @entity1011 :: ('MESH:D003404', 'Chemical') :: ['creatinine']
@entity254 :: (MESH:C563598,Disease) :: ['Anastomosis']
