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Updated: Jun 6, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Evaluation of combined left ventricular function using the myocardial performance index in children with chronic
Roya Isa Tafreshi1, Nakisa Human, Hasan Otukesh
1Department of Pediatric Cardiology, Iran University of Medical Sciences, Aliasghar Children's Hospital, Tehran, Iran. tafreshi@iums.ac.ir
Insights
Myocardial performance index (MPI) measured by pulsed-wave Doppler (PWD) and tissue Doppler imaging (TDI) effectively detects early left ventricular dysfunction in children with chronic kidney disease (CKD). TDI-MPI offers superior predictive discrimination compared to PWD-MPI.
Area of Science:
- Pediatric Cardiology
- Nephrology
- Echocardiography
Background:
- Myocardial dysfunction in early chronic kidney disease (CKD) stages 2-4 is not well-characterized in pediatric populations.
- Early detection of global left ventricular (LV) dysfunction is crucial for managing pediatric CKD patients.
Purpose of the Study:
- To assess the clinical usefulness of myocardial performance index (MPI) via pulsed-wave Doppler (PWD-MPI) in predicting early LV function disturbances in children with CKD.
- To evaluate the utility of tissue Doppler imaging (TDI) for calculating MPI (TDI-MPI) and compare it with the conventional PWD method.
Main Methods:
- Echocardiography performed on 34 children (3-18 years) with CKD stages 2-4 and 35 age-matched healthy controls.
- PWD-MPI calculated from mitral inflow and LV outflow Doppler spectra.
- TDI-MPI calculated using time intervals measured from the mitral annulus.
Main Results:
- Both PWD-MPI and TDI-MPI values were significantly different in pediatric CKD patients compared to controls.
- TDI-MPI demonstrated superior predictive discrimination for identifying myocardial dysfunction versus PWD-MPI.
- TDI-MPI (cutoff >0.34) showed 91% sensitivity and 82% specificity for LV dysfunction, while PWD-MPI (cutoff >0.36) had 64.7% sensitivity and 97% specificity.
Conclusions:
- Subtle left ventricular function abnormalities are present early in pediatric patients with mild to moderate renal insufficiency.
- Both PWD-MPI and TDI-MPI are appropriate indicators of global LV function in young patients with CKD.
- TDI-MPI is a more sensitive tool for identifying LV dysfunction in this population.
Background:
Myocardial dysfunction that complicates the initial stages of chronic kidney disease (CKD) has not been yet fully characterized in young patients. We aimed to assess the clinical usefulness of myocardial performance index obtained by pulsed-wave Doppler method (PWD-MPI) in predicting early disturbances of global left ventricular (LV) function in children with CKD stages 2-4. In addition, we evaluated the clinical utility of tissue Doppler imaging (TDI) as a tool for calculating MPI in comparison with the conventional method.
Methods:
Standard echocardiography was performed in 34 patients aged 3-18 years and for 35 age-matched healthy control subjects. PWD-MPI was calculated from Doppler spectra of mitral inflow and LV outflow. To obtain TDI-MPI, time intervals were measured from mitral annulus.
Results:
The mean values of both PWD-MPI and TDI-MPI of the patients were significantly different from those of the control subjects. Using receiver operating characteristics curve analysis, TDI-MPI yielded a better predictive discrimination for separating patients with versus those without myocardial dysfunction than PWD-MPI. Using a PWD-MPI >0.36 as the cutoff value, myocardial dysfunction was found with a sensitivity of 64.7% and specificity of 97%. The sensitivity and specificity of TDI-MPI >0.34 in identification of LV dysfunction were 91% and 82%, respectively. TDI-MPI was correlated with that measured by PWD (P < 0.004, r = 0.57).
Conclusions:
Subtle abnormalities of LV function develop early when renal insufficiency is mild to moderate. MPI, measuring by PWD and TDI, are appropriate indicators of overall LV function in young patients with CKD.
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