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An Immature Murine Model of Reversible Unilateral Ureteral Obstruction
Published on: April 4, 2025
Fetal surgery for severe lower urinary tract obstruction
1Obstetrics Department, Faculty of Medicine, São Paulo University, São Paulo, Brazil. rodrigoruano@hotmail.com
Prenatal Diagnosis
|March 18, 2011
Summary
Fetal interventions can treat severe lower urinary tract obstruction (LUTO), improving outcomes. Fetal cystoscopy shows higher survival and renal function rates compared to vesico-amniotic shunting for LUTO.
Area of Science:
- Perinatal Medicine
- Fetal Surgery
- Urology
Background:
- Severe lower urinary tract obstruction (LUTO) leads to high perinatal mortality and postnatal renal impairment.
- In utero treatment aims to relieve obstruction, increase amniotic fluid, and prevent fetal organ damage.
Purpose of the Study:
- To evaluate the efficacy of fetal interventions for severe LUTO.
- To compare outcomes between vesico-amniotic shunting and fetal cystoscopy.
Main Methods:
- Rigorous selection of candidates with confirmed severe LUTO, oligohydramnios/anhydramnios, and favorable fetal urinalysis.
- Two therapeutic options: vesico-amniotic shunting and fetal cystoscopy for posterior urethral valves.
- Literature review of survival and postnatal renal function rates.
Main Results:
- Vesico-amniotic shunting: ~40% survival, ~50% normal postnatal renal function.
- Fetal cystoscopy: ~75% survival, ~65% normal postnatal renal function.
- Fetal cystoscopy offers a more physiological release of obstruction.
Conclusions:
- Fetal interventions are viable options for severe LUTO.
- Fetal cystoscopy demonstrates superior survival and renal function outcomes compared to vesico-amniotic shunting.
- Careful patient selection is crucial for successful fetal intervention in LUTO.
