The relationship between P-wave dispersion and diastolic functions in diabetic children
Reşit Köken1, Tevfik Demir, Tolga Altuğ Sen
1Department of Pediatrics, Medical Faculty, Kocatepe University, Afyonkarahisar, Turkey. resitkoken@hotmail.com
Insights
Type 1 diabetes negatively affects diastolic function in children, alongside increased P-wave dispersion. However, no direct link was found between P-wave dispersion and diastolic dysfunction in these young patients.
Area of Science:
- Cardiology
- Pediatrics
- Endocrinology
Background:
- Type 1 diabetes (T1D) is a chronic condition affecting children.
- Diabetic complications can impact cardiovascular health.
- P-wave dispersion and diastolic function are key indicators of cardiac health.
Purpose of the Study:
- To investigate the relationship between P-wave dispersion and diastolic function in children with T1D.
- To assess cardiac involvement in pediatric T1D patients.
Main Methods:
- Echocardiography was used to evaluate left and right ventricular diastolic functions.
- P-wave dispersion was calculated from surface electrocardiogram measurements.
- 33 T1D children and 29 healthy controls were included.
Main Results:
- Diabetic children showed significantly increased P-wave maximum duration and dispersion compared to controls.
- Mitral A velocity and tricuspid A velocity time integral were elevated in diabetics.
- Tricuspid deceleration time was significantly lower in diabetic children.
Conclusions:
- Diastolic function of both ventricles is negatively affected in children with T1D.
- Diabetes may contribute to prolonged P-wave dispersion.
- No correlation was found between P-wave dispersion and diastolic function in this cohort.
Objective:
The aim of this study was to investigate the relations between the P-wave dispersion and diastolic functions in type 1 diabetic children.
Patients:
A total of 33 diabetic patients without any cardiovascular disease, with a mean age of 12.3 plus or minus 4.2 years, and 29 healthy controls, with a mean age of 10.4 plus or minus 3.9 years were enrolled for this study. Left and right ventricular functions were assessed by using standard pulsed-wave Doppler echocardiography. P-wave dispersion was calculated by measuring minimum and maximum P-wave duration values on the surface electrocardiogram.
Results:
For the diabetic patients, P-wave maximum duration and dispersion was found to be significantly increased compared with healthy controls. Likewise, mitral A velocity and A velocity time integral was significantly increased while the isovolumic contraction time was significantly higher in the diabetics. In tricuspid valve measurements, however, A velocity time integral was found to be significantly higher, whereas the deceleration time was significantly lower in the diabetics. No relation was found between the left ventricle diastolic functions and duration of diabetes, HbA1c levels and P-wave dispersion in the diabetic children. No correlation was found between the diastolic functions and P-wave minimum, maximum duration, and dispersion for all the participants.
Conclusion:
In type-1 diabetic children, the diastolic functions of both the ventricles were observed to be affected negatively together. Diabetes might be causing the prolongation of P-wave dispersion, but there was no relationship between the diastolic functions and P-wave dispersion in the diabetic children.
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