Epidemiology of chronic renal failure in children: a report from Sweden 1986-1994. Swedish Pediatric Nephrology Association
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E Esbjörner1, U Berg, S Hansson
1Department of Pediatrics, Orebro Medical Center Hospital, Sweden.
Insights
Pediatric chronic renal failure (CRF) in Sweden showed an increasing prevalence of terminal renal failure (TRF) from 1986-1994, likely due to improved uremia treatment and lower mortality. Congenital causes predominated.
Area of Science:
- Pediatric Nephrology
- Public Health Epidemiology
- Renal Medicine
Background:
- Chronic renal failure (CRF) in children presents unique challenges in diagnosis and management.
- Understanding epidemiological trends in pediatric CRF is crucial for resource allocation and public health initiatives.
Purpose of the Study:
- To analyze the incidence and prevalence of chronic renal failure (CRF) and terminal renal failure (TRF) in Swedish children between 1986 and 1994.
- To investigate the causes of pediatric CRF and compare findings with previous study periods.
- To assess changes in treatment approaches for uremia in pediatric patients.
Main Methods:
- A national survey was conducted in Sweden, identifying 118 children with CRF (glomerular filtration rate < 30 ml/min/1.73 m²).
- Data on incidence, prevalence, causes, and outcomes (including TRF) were collected and analyzed.
- Comparison with data from an earlier period (1978-1985) was performed.
Main Results:
- The median annual incidence of CRF was 7.7 and TRF was 6.4 per million children.
- Prevalence of TRF increased significantly from 17.8 to 38 per million children (1986-1994).
- Congenital causes accounted for 67.5% of pediatric CRF cases; no cases of non-obstructive pyelonephritis were identified.
Conclusions:
- Increased TRF prevalence suggests more active uremia management and reduced mortality in Swedish children.
- Congenital renal malformations are a major cause of pediatric CRF in Sweden.
- Further research may be needed to refine the assessment of time from CRF to TRF given that many children do not progress to TRF by age 16.
Abstract:
In a national survey, chronic renal failure (CRF) in Swedish children was studied during the period 1986-1994; 118 children (72 boys, 46 girls) with CRF, defined as a glomerular filtration rate below 30 ml/min per 1.73 m2 body surface area, were identified. The median annual incidence of CRF was 7.7 and that of terminal renal failure (TRF) 6.4 per million children. The prevalence of preterminal renal failure decreased from 29 to 21 per million children over the study period, while the prevalence of TRF increased from 17.8 in 1986 to 38 per million children in 1994. The increase in TRF prevalence was due to a lower incidence of deaths due to uremia and a slightly increased incidence of TRF compared with an earlier study period, 1978-1985. The results point to a more active treatment of uremia in Sweden now than during the period 1978-1985. The congenital causes of CRF (renal malformations, obstructive conditions, and hereditary disorders) accounted for 67.5% of all cases, which is high compared with data from other countries. No child with non-obstructive pyelonephritis as a cause of CRF was identified. Age at detection of CRF and time from detection of CRF to TRF were studied. As a high proportion of children, 42%, reached 16 years of age without entering TRF, the value of presenting time from CRF to TRF for the remaining individuals is questionable. There were only minor differences in primary renal disease, age at presentation, and time from CRF to TRF when the study results were compared with those from 1978-1985.
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