Related Experiment Videos
Fetal compensatory renal hypertrophy with a unilateral functioning kidney
1Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Hospital, Pittsburgh, Pennsylvania.
Summary
Fetal compensatory renal hypertrophy, or enlarged kidneys, can be detected before birth in fetuses with only one functioning kidney. This condition may be present as early as 22 weeks gestation.
Area of Science:
- Fetal medicine
- Pediatric nephrology
- Medical imaging
Background:
- Unilateral renal agenesis and multicystic kidney disease are congenital conditions affecting fetal kidney development.
- Assessing fetal kidney growth is crucial for prenatal diagnosis and management.
- Compensatory renal hypertrophy is a known phenomenon in postnatal nephrology.
Purpose of the Study:
- To determine if fetal compensatory renal hypertrophy can be identified in utero.
- To establish reference standards for fetal kidney length.
- To investigate the earliest gestational age at which this hypertrophy is detectable.
Main Methods:
- Established a nomogram for normal fetal renal length using data from 254 fetuses.
- Measured renal length in fetuses diagnosed with unilateral renal agenesis (14 cases) and unilateral multicystic kidney (22 cases).
- Defined compensatory renal hypertrophy as renal length exceeding the 95th percentile for gestational age.
Main Results:
- Compensatory renal hypertrophy was observed in 16 out of 36 fetuses (44.4%) with a single functioning kidney.
- The study established a reference range for normal fetal kidney size.
- The findings indicate a significant incidence of this condition in the studied population.
Conclusions:
- Compensatory renal hypertrophy is a detectable phenomenon in the fetal period.
- This adaptive response can be identified prenatally, even in cases of significant renal malformation.
- The earliest detection of compensatory renal hypertrophy in utero was noted around 22 weeks' gestation.