Chronic Kidney Disease in Children Clinical Presentation
- Author: Sanjeev Gulati, MD, MBBS, DNB(Peds), DM, DNB(Neph), FIPN(Australia), FICN, FRCPC(Canada); Chief Editor: Craig B Langman, MD more...
History and Physical Examination
Chronic kidney disease (CKD) is asymptomatic in its earliest stages (stage I and stage II), although urinalysis findings or blood pressure may be abnormal. As chronic kidney disease progresses to more advanced stages, signs and symptoms greatly increase.
Polydipsia and nocturia (secondary to a reduced capacity to concentrate the urine) may be one of the earliest symptoms that indicate a diagnosis of chronic kidney disease in an otherwise healthy-looking child who has tubulointerstitial kidney disease.
The signs and symptoms in advanced chronic kidney disease may include the following:
Bone disease (termed osteodystrophy)
Anorexia, nausea, vomiting
The absolute serum levels of blood urea nitrogen (BUN) or creatinine do not directly correlate with the development of these symptoms; however, estimated glomerular filtration rate (eGFR) seems to be associated with a stronger correlation.
The physical findings vary depending on the severity of kidney failure and can range from an absence of any physical findings to the presence of one or more of the following:
Cardiac abnormalities (eg, left ventricular hypertrophy [LVH], pericarditis)
Central nervous system (CNS) abnormalities (eg, ranging from loss of concentration and lethargy to seizures, coma)
Approximately 50-100% of patients with end-stage renal disease (ESRD) also have at least one dermatologic condition. In addition, uremia and conditions associated with renal replacement therapy often give rise to numerous and, often, relatively unique cutaneous disorders. These dermatologic manifestations of renal disease may be divided into 3 general associated with ESRD, uremia, or renal transplantation. Discussion of the common cutaneous disorders in renal disease is beyond the scope of this article; see Dermatologic Manifestations of Renal Disease.
The image below illustrates several uremia-related cutaneous disorders.
A population-based, case-control study with 1994 patients with childhood CKD and 20,032 controls sought to determine the association of childhood CKD with prenatal risk factors, including birth weight, maternal diabetes mellitus, and maternal overweight/obesity. The prevalence of CKD was 126.7 cases per 100,000 births. The study concludes that low birth weight, maternal gestational diabetes mellitus, and maternal overweight/obesity associated significantly with obstructive uropathy. The data suggested that prenatal factors may impact the risk of CKD. The authors add that future studies are needed to determine if modification of these factors could reduce the risk of childhood CKD.
The Kidney Disease Outcomes Quality Initiative (KDOQI) recommended the following classification of chronic renal disease by stage[4, 12] :
Stage I disease is defined by a normal glomerular filtration rate (GFR) (> 90 mL/min per 1.73 m 2) and persistent albuminuria
Stage II disease is characterized by a GFR of 60-89 mL/min per 1.73 m 2 and persistent albuminuria
Stage III disease is characterized by a GFR of 30-59 mL/min per 1.73 m 2
Stage IV disease is characterized by a GFR of 15-29 mL/min per 1.73 m 2
Stage V disease is characterized by a GFR of less than 15 mL/min per 1.73 m 2 or end-stage renal disease (ESRD)
US Renal Data System (USRDS). 2010 Annual Data Report: Atlas of Chronic Kidney Disease and End-Stage Renal Disease in the United States. Bethesda, Md: National Institutes of Health, National Institute of Diabetes and Digestive and Kidney Diseases; 2010. Available at http://www.usrds.org/adr.htm. Accessed: June 13, 2011.
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