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Fetal surgery for obstructive uropathy: rational considerations.

¹Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Manitoba, Winnipeg, Canada.

American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation

|October 1, 1987

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Fetal genitourinary tract anomalies can be detected early using ultrasound. In utero diversion therapy shows promise for treating obstructive uropathy, potentially reversing fetal kidney and lung damage.

Area of Science:

Medical Imaging
Fetal Medicine
Pediatric Urology

Background:

High-resolution dynamic ultrasound enables accurate detection of fetal genitourinary tract anomalies.
Congenital obstructive uropathy can be identified as early as 16 weeks gestation.
Fetal lamb models demonstrate that outflow tract obstruction causes hydronephrosis, pulmonary hypoplasia, and oligohydramnios.

Purpose of the Study:

To review the methods, rationale, and results of in utero diversion therapy for fetal obstructive uropathy.
To discuss the potential for reversing fetal renal and pulmonary damage through intervention.

Main Methods:

Review of diagnostic advancements in fetal genitourinary imaging.
Analysis of pathophysiology in fetal lamb models of obstructive uropathy.

Related Experiment Videos

Evaluation of chronic in utero diversion therapy techniques and outcomes in human fetuses.

Main Results:

Obstruction leads to progressive hydronephrosis, with renal changes varying by fetal age at obstruction.
Pulmonary and renal damage may be reversible upon release of obstruction.
In utero diversion therapy in human fetuses has yielded encouraging but unproven success.

Conclusions:

Advances in ultrasound and understanding pathophysiology support in utero intervention for fetal obstructive uropathy.
Chronic in utero diversion therapy offers a potential treatment, though further evidence is needed.
Early detection and intervention may improve outcomes for congenital obstructive uropathy.