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Long-term followup of pediatric dismembered pyeloplasty: how long is long enough?
K Psooy1, J G Pike, M P Leonard
1Department of Pediatric Urology, Winnipeg Children's Hospital, Winnipeg, Manitoba, Canada.
Insights
Pediatric pyeloplasty followup can be limited to two years. Late obstruction recurrence after pyeloplasty is rare, especially with normal diuretic renograms, minimizing the need for extended monitoring.
Area of Science:
- Pediatric Urology
- Surgical Outcomes
- Medical Follow-up Protocols
Background:
- Pyeloplasty is a common surgical procedure for ureteropelvic junction obstruction in children.
- Determining optimal follow-up duration after pyeloplasty is crucial for managing potential late complications.
Purpose of the Study:
- To assess the risk of late complications after pediatric pyeloplasty.
- To evaluate the likelihood of patient return for follow-up if discharged early.
Main Methods:
- Retrospective chart review of pediatric patients undergoing dismembered pyeloplasty (1986-1996).
- Assessment of recurrent ureteropelvic junction obstruction and related symptoms.
- Analysis of diuretic renogram and ultrasound findings.
Main Results:
- Obstruction recurrence was rare (0.8% overall, 1.3% after 5 years).
- Symptoms suggestive of recurrence occurred in 18% but true recurrence was only 1%.
- Early discharge follow-up showed a higher probability of repeat referral in year 1 compared to year 3.
Conclusions:
- Long-term follow-up is generally not warranted after an unobstructed postoperative diuretic renogram.
- An ideal follow-up duration of two years is proposed to cover the period of most likely symptom presentation.
- Baseline unobstructed renal ultrasound is recommended within this two-year window.
Purpose:
We determined followup for pediatric patients after pyeloplasty based on the risk of late complications and the likelihood of return if discharged early from followup.
Materials And Methods:
We retrospectively reviewed the charts of all patients who underwent dismembered pyeloplasty at a single center between 1986 and 1996. Data regarding recurrent ureteropelvic junction obstruction and symptoms suggesting possibly recurrent obstruction were assessed.
Results:
During the select period 123 pyeloplasties were performed. A total of 77 renal units were followed greater than 5 years. At 1 year postoperatively diuretic renograms showed normal drainage in 87% of the cases and prolonged or incomplete drainage in 13%. Obstruction recurred 8 years postoperatively in only 1 renal unit (0.8% overall, 1.3% of those followed greater than 5 years). Symptoms suggestive of recurrent obstruction developed in 18% of the patients but represented true recurrence in only 1. If one were to consider early followup discharge for these patients, the probability of repeat referral due to such symptoms was significantly higher in year 1 than in year 3. Most symptoms were initially assessed with ultrasound.
Conclusions:
Recurrent ureteropelvic junction obstruction is unlikely after unobstructed postoperative diuretic renogram and does not warrant long term followup. Ideal followup would extend to 2 years, covering the period when an initial symptom of recurrence is most likely to present and enabling baseline unobstructed renal ultrasound to be performed.
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