Abstract
Chronic kidney disease (CKD) is a major factor contributing to cardiovascular (CV) morbidity and mortality with the highest risk in patients on dialysis. An estimation of CV risk is important not only to identify potential modifiable risk factors but also to evaluate the effect of treatments aimed to reduce the risk. Non-invasive methods of measuring vascular changes and circulating biomarkers are available to assess the presence and severity of cardiovascular damage. These include measures of structural (carotid intima-media thickness and coronary artery calcification score) and functional (aortic pulse wave velocity, 24-h ambulatory blood pressure monitoring, ambulatory arterial stiffness index, heart rate variability and flow-mediated dilatation) changes in the vessel wall. In addition, a number of circulating biomarkers of vascular damage and its progression have been studied. Many of these tests are well validated as surrogate markers of future cardiovascular events and death in adult CKD patients, but need technical adaptation, standardization and validation for use in children. With our current state of knowledge, these are best reserved for research studies and scarce clinical resources may be better utilized for preventative strategies to reduce the modifiable risk factors for calcification from early CKD stages.
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Acknowledgments
The work was supported by the following Hungarian National Grants: OTKA 100909, PD83431; TÁMOP 4.2.3/08/1/KMR-2008-0003, 4.2.2. B-10/1.2010-2013; LP 2001-008/2011 and by the Hungarian Society of Nephrology. RS has received grants from Kids Kidney Research and British Heart Foundation, UK.
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Answers
1. d; 2. a; 3. c; 4. d; 5. c.
Questions (answers are provided following the reference list)
Questions (answers are provided following the reference list)
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1.
Which are the most popular methods for PWV measurement in children?
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a.
MRI and ultrasound
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b.
ultrasound and oscillometric
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c.
MRI and applanation tonometry
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d.
oscillometric and applanation tonometry
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a.
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2.
Which statement is true about cIMT?
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a.
cIMT increases linearly with age
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b.
cIMT is a direct measure of the calcium content of the vessel
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c.
cIMT is inversely related to PWV
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d.
Dialysis and appropriate medical treatment of the disturbed calcium and phosphate metabolism, may decrease cIMT to the normal values
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a.
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3.
PWV as an established marker of cardiovascular risk should be used
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a.
in the daily practice to assess the efficacy of therapeutic interventions to reduce cardiovascular risk
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b.
in combination with 24-h blood pressure monitoring, because both are needed to calculate AASI
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c.
in multi-center interventional follow-up studies to assess the efficacy of therapeutic interventions to reduce cardiovascular risk
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d.
to assess the degree of vascular calcification in patients with CKD
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a.
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4.
Which of the following measures predict a risk of CV disease in CKD:
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a.
Fetuin-A
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b.
Serum creatinine
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c.
Fibroblast growth factor-23 (FGF-23)
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d.
All of the above
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a.
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5.
Which one of the following statements regarding Fetuin-A is true:
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a.
It is a vitamin K-dependent protein.
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b.
It is produced by bone and acts in the blood vessels.
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c.
It is localized to sites of calcification and prevents further crystal growth.
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d.
High circulating levels are seen in patients with calcification.
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a.
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Shroff, R., Dégi, A., Kerti, A. et al. Cardiovascular risk assessment in children with chronic kidney disease. Pediatr Nephrol 28, 875–884 (2013). https://doi.org/10.1007/s00467-012-2325-3
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DOI: https://doi.org/10.1007/s00467-012-2325-3