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Prenatal diagnosis and management of urethral obstruction
1Department of Obstetrics and Gynaecology, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India.
Insights
Bladder outlet obstruction in infants, often caused by posterior urethral valves, leads to high mortality, primarily from pulmonary hypoplasia. Early surgery improves survival but can result in chronic renal failure.
Area of Science:
- Pediatric Urology
- Neonatal Surgery
- Medical Research
Background:
- Bladder outlet obstruction (BOO) is a critical condition in newborns.
- Early diagnosis and intervention are crucial for infant survival and long-term health outcomes.
Purpose of the Study:
- To analyze the incidence, causes, and outcomes of bladder outlet obstruction in infants.
- To identify risk factors and associated conditions impacting mortality and morbidity.
Main Methods:
- Retrospective case series analysis.
- Review of 18 infant cases diagnosed with bladder outlet obstruction over a 6-year period.
- Data collection on etiology, associated conditions, treatment, and follow-up outcomes.
Main Results:
- Posterior urethral valve was the most common cause (61%) of BOO.
- Oligohydramnios was present in 78% of cases, associated with a 67% mortality rate, mainly due to pulmonary hypoplasia.
- Six infants (33%) survived following early postnatal surgery, with two developing chronic renal failure.
Conclusions:
- Posterior urethral valves are a leading cause of infant bladder outlet obstruction.
- Oligohydramnios significantly increases mortality risk, often linked to pulmonary hypoplasia.
- While early surgery improves survival, long-term renal complications remain a concern.
Abstract:
Eighteen cases of bladder outlet obstruction were diagnosed at Queen Mother's Hospital, Glasgow, over a period of 6 years. Commonest cause was posterior urethral valve in 11 cases (61%). Oligohydramnios was present in 78% of cases with a mortality of 67% mainly due to pulmonary hypoplasia. The 6 surviving infants (33%) underwent early postnatal surgery. Two of these have chronic renal failure on follow-up.