An observational cohort study will be conducted to non-invasively investigate central blood pressure and pulse wave velocity in children with kidney disease and controls. Using an oscillometric monitor, the investigators aim to non-invasively obtain the central blood pressure and pulse wave velocity (PWV), or arterial stiffness, of children with kidney disease. The investigators will also enroll age- and race-matched healthy controls and measure the same parameters for comparison. In addition, the investigators will measure PWV by standard arterial tonometry method in a subset of patients.
The specific aims of the study are as follows: 1. Using an oscillometric blood pressure monitor, the investigators aim to non-invasively obtain the central blood pressure and pulse wave velocity (PWV), or arterial stiffness, of children with kidney disease. 2. Measure oscillometric central blood pressure and PWV in age and race matched healthy children. 3. Measure PWV by standard arterial tonometry method in a subset of patients, and compare these measurements to the PWV measured using the oscillometric device. 4. Measure body composition of patients and controls (Body Mass Index, Waist-to-Height ratio, %body fat, and mid-arm muscle circumference) to see how this relates to central blood pressure and PWV.
Study Type
OBSERVATIONAL
Enrollment
150
There is no intervention in this study. It is observational only.
Children's National Medical Cetner
Washington D.C., District of Columbia, United States
Oscillometric central blood pressure
Central blood pressure as measured by oscillometric blood pressure device
Time frame: cross-sectional measurement performed in patients who are between 6 months to 10 years post-transplant
Oscillometric pulse wave velocity
Pulse wave velocity as measured by oscillometric blood pressure device
Time frame: cross-sectional measurement performed in patients who are anywhere between 6 months to 10 years post-transplant
Body mass index (BMI) in kg/m2
weight measured in kg and height measured in cm will be combined to determine BMI (kg/m2)
Time frame: cross-sectional measurement performed in patients who are anywhere between 6 months to 10 years post-transplant
Waist circumference (cm)
waist circumference will be measured in cm using a flexible tape measure
Time frame: cross-sectional measurement performed in patients who are anywhere between 6 months to 10 years post-transplant
Mid arm circumference (cm)
Mid arm circumference will be measured in cm using a flexible tape measure
Time frame: cross-sectional measurement performed in patients who are anywhere between 6 months to 10 years post-transplant
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