Intima-media thickness measurements in children with cardiovascular risk factors
Mieczysław Litwin1, Anna Niemirska
1Department of Research, The Children's Memorial Health Institute, Warsaw, Poland. m.litwin@czd.pl
Insights
Intima-media thickness (IMT) measurement is a valuable tool for assessing cardiovascular risk and target-organ damage in children. Studies show IMT can decrease with improved blood pressure and metabolic health, indicating treatment effectiveness.
Area of Science:
- Pediatric Cardiology
- Vascular Ultrasound
- Cardiovascular Risk Assessment
Background:
- Intima-media thickness (IMT) measurement is a standard diagnostic procedure for cardiovascular risk and hypertensive target-organ damage (TOD) in adults.
- Pediatric studies increasingly evaluate IMT in high-risk children (hypertension, diabetes, CKD, obesity, dyslipidemia, homocystinurias).
- Carotid IMT correlates with other TOD markers in hypertensive children and metabolic risk factors.
Purpose of the Study:
- To evaluate the utility of intima-media thickness (IMT) measurement in assessing target-organ damage (TOD) and cardiovascular risk in pediatric populations.
- To explore the relationship between IMT and cardiovascular risk factors and disease severity in children.
- To assess the potential of IMT as a method for monitoring treatment efficacy in pediatric cardiovascular conditions.
Main Methods:
- Utilizing ultrasound to measure carotid intima-media thickness (IMT).
- Correlating IMT measurements with blood pressure, aortic gradients, and metabolic risk factors in pediatric cohorts.
- Analyzing changes in IMT following interventions aimed at normalizing blood pressure and metabolic abnormalities.
Main Results:
- Carotid IMT is strongly related to other markers of TOD in children with arterial hypertension and metabolic cardiovascular risk factors.
- In children with coarctation of the aorta, carotid IMT correlates with blood pressure and residual aortic gradient.
- Normalization of blood pressure and metabolic abnormalities in high-risk children led to regression of arterial changes and decreased IMT.
Conclusions:
- Intima-media thickness (IMT) measurement is an emerging, promising method for assessing TOD and cardiovascular risk in children, similar in utility to echocardiography for left ventricular mass.
- IMT measurement shows potential for monitoring treatment efficacy in pediatric cardiovascular conditions.
- Standardization of IMT measurement techniques in children and adolescents is crucial to avoid bias and ensure clinical utility.
Abstract:
Measuring intima-media thickness (IMT) is now a standard diagnostic procedure in assessing cardiovascular risk and hypertensive target-organ damage (TOD) in adults. There is also an increasing number of pediatric publications evaluating IMT in children from high-risk groups, such as those with arterial hypertension, diabetes, chronic kidney disease, obesity, dyslipidemia, and homocystinurias. It has been shown that carotid IMT is strongly related with other markers of TOD in children with arterial hypertension and with metabolic cardiovascular risk factors. In children with coarctation of the aorta, carotid IMT correlated both with blood pressure and even with mild residual aortic gradient. On the other hand, studies in children with high cardiovascular risk have shown that normalization of blood pressure and metabolic abnormalities led to regression of arterial changes and decrease of IMT. Although not yet accepted as standard pediatric procedure, IMT measurement is emerging as a promising method of assessing TOD and cardiovascular risk and monitoring treatment efficacy. From a practical point of view, clinical utility of IMT measurements seems to be similar to use of echocardiography in assessing left ventricular mass. However, IMT measurements in children and adolescents should be standardized to avoid bias caused by the use of different measurement methods.
